Tag Archives: lab

Soapbox

Searching for the Good Stuff

By Cindy Rice
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Someone approached me the other day, wanting to know what was the real story about hemp and CBD.

He said he had “a guy” who gave him a CBD salve as part of a study, supposedly “the good stuff,” to help his knee. He couldn’t understand why he was the only one out of 20 people in the group that felt no relief. He happened to have this CBD salve with him, along with a second brand that he hadn’t yet tried. The “good stuff” had slick, colorful packaging, a beautiful logo and powerful marketing messages about the phytocannabinoids and essential oils in the jar. The other CBD product was in a dull grey tin, an ugly duckling, and not nearly so impressive on the outside- I’ll call it “Homer’s Brew.” My friend dismissed Homer’s Brew outright, as not even worth trying. I told him that not all CBD products are created equal, that you can’t always believe the claims on the package, including the cannabinoid potency displayed on the label.

The structure of cannabidiol (CBD), one of 400 active compounds found in cannabis.

I told him to search for the Certificate of Analysis (COA) for each of the two products, specifically, lab test results validating the CBD dosage per serving, and also the breakdown of pesticides, heavy metals and microbials. He had to do a little digging and emailing, as it wasn’t readily available for either company, but the next day, results were in. The “good stuff” with the slick packaging and bold claims had mere trace amounts of CBD, with some hemp and essential oils- no tests for pesticides or contaminants of any kind. Hmmm, no wonder he was disappointed. Homer’s Brew’s COA came in with flying colors – a reputable lab had confirmed safe levels of pesticides, pathogens and heavy metals, and the CBD level was substantial, with a detailed cannabinoid breakdown in the lab report.

In spite of the varying legality of hemp-derived CBD products from one state to the next, consumers are gobbling up costly CBD salves, tinctures and edibles in markets, gyms and online. Like moths to a flame, they are pulled in by the CBD name and lofty promises, not always understanding what they are getting for their money. They trust that these products are safe, licensed, inspected and regulated by some agency, otherwise, “they wouldn’t be on the shelves, would they?”

FDAlogoIn spite of the 2018 Farm Bill, FDA still has not recognized the legality of products containing hemp-derived CBD, but some states have gone ahead and given them a green light anyway- check with your own jurisdiction to be sure. In the meantime, hemp-derived CBD products are slipping through the regulatory cracks, depending on the state. It is confusing, for sure, and buyer beware.

Separate yourself from the pack of snake-oil salesmen. Test your products for safety and accurate cannabinoid potency, and make a Certificate of Analysis readily available to your customers. Boldly portray your transparency and belief in the quality of your products through this COA.

Providing this information to consumers is the best path to success- safe, satisfied customers who will refer to their friends and family, and most likely come back for more of your “good stuff.”

GMP

What Does GMP Mean? And How Is This Different From EU-GMP?

By Marguerite Arnold
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GMP

The cannabis industry is on the road to legitimacy, no matter the bumps, globally. No matter what, and no matter what happens next, that is a good thing. Issues like supply chain transparency, privacy, consumer and patient safety, and of course energy and water use have long been in the room just about everywhere.

Cleantech Is Cannatech

The modern cannabis industry was birthed and given significant shape in deserts (Israel, California, Nevada). In California, as of 2014, producers were warned, yet again, that they could not avail themselves of federally overseen aquifers of groundwater. The legitimizing industry trucked in what it needed.

On the medical discussion, in Europe, in particular, such issues are now in the room. All medical cannabis must be grown indoors. No exceptions.

That means low energy, high efficiency production is on the rise, not the wane.

What Does GMP Mean?

The overall regulations and operating procedures that surround this discussion are known as “Good Manufacturing Practices,” or GMPs for short. But like all the best acronyms, what the standards are, who sets them, and where they are equivalent is still a shifting picture.

Further, GMPs, and even more particularly EU-GMPs, are specifically referred to this way to distinguish the medically bound product from other consumer protection regulations that include novel food.

european union statesThat said, “GMP practices” differ widely from industry to industry. The idea behind them, however is to prevent harm from occurring to the user, including that the end product is free from contamination, and the packaging as well as manufacture has been well documented. Additional requirements include that personnel are properly trained.

And while the practice, at the pointed end of enforcement can get nerdy, detail-oriented and specific, that is precisely the point. That is also why you might catch another variant of this acronym (cGMP – or current GMP guidelines), to denote a world that is changing fast.

Contamination of the supply chain if not the carbon impact of the same, for all food and plant-based pharmaceutical products is a 21st century problem that is exploding on the scene as fast as the planet warms and cannabis legalizes.

What Do GMP Guidelines Include?

These are guidelines, not steps. As a result, from a bird’s eye view, all international and sovereign national GMP standards include a few basic principles no matter how much they may differ in the weeds. Namely:

  • That manufacturing processes are clean, controlled and processes are verifiable and repeatable. Changes to any and all must also be clearly documented.
  • Record keeping, accurate accounting (of product and on the financial side) must be kept, including complete batch history through manufacture and distribution to the end user. Audits are a way of life.
  • Recall procedures must be in effect.
  • All complaints about products must be examined.

The World Health Organization (WHO) version of GMP is what’s used by pharmaceutical regulators worldwide. The European Union’s EU-GMP standards are seen as roughly equivalent, as are those now practiced in the U.S. by the FDA. That does not mean that confusion does not reign as standards are changing (across Europe, for example, between individual countries, there is still disagreement). However similar GMPs are used in countries including Australia, Canada, Japan, and Singapore. The UK, of course, is slightly different than anyone else but still has regulations that are roughly equivalent and referred to as “The Orange Guide” (in honor of the color of the book’s cover).

You Know It When You See It

Well, not quite. Beyond GMP, there are of course, other classifications for the kind of plant or product being made, manufactured and distributed. And here, along with international treaties about who can trade with whom, also impact this discussion.

It is not correct, however, for example, to claim that what are known as GACP guidelines (good agricultural and collection practices) are equivalent to GMP. Bio, or pesticide free production (in other words) is just one of many steps in meeting much higher standards now in the room for medically bound cannabis.

What Is GMP “Like”?

All industries have “best practices.” For example, the building industry has all sorts of codes and guidelines. However, in addition to this, about a decade ago, LEED (or green building) certification began to be implemented widely. In the U.S., in particular, there was much discussion about how honest such certifications actually were. The term “greenwashing” was frequently used to describe practices that were sold as energy efficient, but in the end cost more, environmentally and otherwise, than they should.

Like LEED, GMP is not a prescribed set of steps but rather best practice guidelines and regulations meant to guide industries on producing safe products – from seed to sale.

How Does This Differ From WHO Guidelines on GACP for Medicinal Plants?

The World Health Organization’s GACP guidelines are highly controversial in this context, especially when it comes to cannabis. Especially because they refer specifically to plants used as medicine that are “grown in the wild.” I.e. not greenhouse. How these guidelines are interpreted by different countries, however, within the context of the interpretation of “medical cannabis” not to mention pharmaceutical GMPs, are very different.

GACP guidelines, in other words, are sometimes the first step in qualification – but certification under the same (starting with outdoor grown crops produced without pesticides for example) is not likely to pass European medical standards any time soon.

From The Lab

Spotlight on Encore Labs: Servicing the Cannabis Market in California

By Kristen Hogerheide
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Encore Labs is a full-service cannabis testing lab in Pasadena, California, providing all testing needs required by California’s Bureau of Cannabis Control (BCC). The BCC requires that cannabis products being sold in licensed dispensaries be tested for cannabinoid potency, heavy metals, microbial impurities, moisture content and water activity, mycotoxins, residual pesticides, residual solvents and processing chemicals, foreign materials and terpenes. It is Encore Labs’ goal to guarantee the quality and potency of all cannabis products while ensuring regulatory guidelines are met in the state of California.

Encore Labs provides quick turnaround times on a consistent basis. They take pride in offering excellent customer service without diminishing the quality of the work that they do. Their team of laboratory analysts/technicians are passionate about the industry and will never compromise their integrity just to make an extra buck.

Co-Founder, Spencer Wong, mentions their personal connection with clients. “Our customers don’t just see us as their testing laboratory, they see Encore Labs as their laboratory partner,” says Wong. “Besides performing analytical testing, we have worked with many customers to help formulate new products and do root cause analysis to pinpoint inefficiencies in their manufacturing operations and cultivation farms.”

ISO/IEC 17025 Accreditation has been extremely valuable to Encore Labs, especially regarding the new cannabis testing industry. “Our experience with Perry Johnson Laboratory Accreditation, Inc. has been great and has allowed for a very smooth and straightforward initial accreditation process. Their staff has been knowledgeable and responsive every step of the way,” says Wong.

Accreditation establishes that steps are being taken regarding quality and that laboratories are meeting and exceeding the highest testing standards. It also provides further assurance and confidence in data results as well as validated methods, staff training procedures, equipment calibration and successful participation in proficiency testing/interlaboratory comparisons.

Starting out with 1500 square feet of laboratory space, within the last year Encore Labs has doubled its work area. In order to meet the growing demand of the cannabis testing industry, they have added plans to once again double in size by the end of 2019, as well as open a second laboratory by the end of 2020.

Moments from the 2019 Cannabis Quality Conference

By Cannabis Industry Journal Staff
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The 1st Annual Cannabis Quality Conference & Expo featured dynamic discussions both in the sessions as well as on the exhibit floor. Take a look at some of the highlights from this year’s conference and expo.

All image credit: amyBcreative

Analytical Instruments You Need to Start a Cannabis Testing Laboratory

By Bob Clifford
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The cannabis industry is growing exponentially, and the use of cannabis for medical purposes is being adopted across the nation. With this boom in cannabis consumers, there has been an increasing need for knowledge about the product.

The role of testing labs has become crucial to the process, which makes owning and operating a lab more lucrative. Scientists testing for potency, heavy metals, pesticides, residual solvents, moisture, terpene profile, microbial and fungal growth, and mycotoxins/aflatoxins are able to make meaningful contributions to the medical industry by making sure products are safe, while simultaneously generating profits and a return on investment.

Here are the key testing instruments you need to conduct these critical analyses. Note that cannabis analytical testing requirements may vary by state, so be sure to check the regulations applicable to the location of your laboratory.

Potency Testing

High-performance liquid chromatograph (HPLC) designed for quantitative determination of cannabinoid content.

The most important component of cannabis testing is the analysis of cannabinoid profiles, also known as potency. Cannabis plants naturally produce cannabinoids that determine the overall effect and strength of the cultivar, which is also referred to as the strain. There are many different cannabinoids that all have distinct medicinal effects. However, most states only require testing and reporting for the dry weight percentages of delta-9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD). It should be noted that delta-9-tetrahydrocannabinolic acid (Δ9-THCA) can be converted to THC through oxidation with heat or light.

For potency testing, traditional high-performance liquid chromatography (HPLC) is recommended and has become the gold standard for analyzing cannabinoid profiles. Look for a turnkey HPLC analyzer that delivers a comprehensive package that integrates instrument hardware, software, consumables and proven HPLC methods.

Heavy Metal Testing

ICP-MS instrument for detecting heavy metals in cannabis.

Different types of metals can be found in soils and fertilizers, and as cannabis plants grow, they tend to draw in these metals from the soil. Heavy metals are a group of metals considered to be toxic, and the most common include lead, cadmium, arsenic and mercury. Most labs are required to test and confirm that samples are under the allowable toxic concentration limits for these four hazardous metals.

Heavy metal testing is performed by inductively coupled plasma mass spectrometry (ICP-MS). ICP-MS uses the different masses of each element to determine which elements are present within a sample and at what concentrations. Make sure to include accompanying software that provides assistant functions to simplify analysis by developing analytical methods and automatically diagnosing spectral interference. This will provide easy operation and analytical results with exceptionally high reliability.

To reduce running costs, look for a supporting hardware system that reduces the consumption of argon gas and electricity. For example, use a plasma ignition sequence that is optimized for lower-purity argon gas (i.e., 99.9% argon as opposed to more expensive 99.9999%).

Pesticide Testing

The detection of pesticides in cannabis can be a challenge. There are many pesticides that are used in commercial cannabis grow operations to kill the pests that thrive on the plants and in greenhouses. These chemicals are toxic to humans, so confirming their absence from cannabis products is crucial. The number of pesticides that must be tested for varies from state to state, with Colorado requiring only 13 pesticides, whereas Oregon and California require 59 and 66 respectively. Canada has taken it a step further and must test for 96 pesticides, while AOAC International is developing methods for testing for 104 pesticides. The list of pesticides will continue to evolve as the industry evolves.

Testing for pesticides is one of the more problematic analyses, possibly resulting in the need for two different instruments depending on the state’s requirements. For a majority of pesticides, liquid chromatography mass spectrometry (LCMS) is acceptable and operates much like HPLC but utilizes a different detector and sample preparation.

With excellent sensitivity and ultra-low detection limits, LC-MS/MS is an ideal technique for the analysis of pesticides.

Pesticides that do not ionize well in an LCMS source require the use of a gas chromatography mass spectrometry (GCMS) instrument. The principles of HPLC still apply – you inject a sample, separate it on a column and detect with a detector. However, in this case, a gas (typically helium) is used to carry the sample.

Look for a LC-MS/MS system or HPLC system with a triple quadrupole mass spectrometer that provides ultra-low detection limits, high sensitivity and efficient throughput. Advanced systems can analyze more than 200 pesticides in 12 minutes.

For GCMS analysis, consider an instrument that utilizes a triple quadrupole mass spectrometer to help maximize the capabilities of your laboratory. Select an instrument that is designed with enhanced functionality, analysis software, databases and a sample introduction system. Also include a headspace autosampler, which can also be used for terpene profiles and residual solvent testing.

Residual Solvent Testing

Residual solvents are chemicals left over from the process of extracting cannabinoids and terpenes from the cannabis plant. Common solvents for such extractions include ethanol, butane, propane and hexane. These solvents are evaporated to prepare high-concentration oils and waxes. However, it is sometimes necessary to use large quantities of solvent in order to increase extraction efficiency and to achieve higher levels of purity. Since these solvents are not safe for human consumption, most states require labs to verify that all traces of the substances have been removed.

Testing for residual solvents requires gas chromatography (GC). For this process, a small amount of extract is put into a vial and heated to mimic the natural evaporation process. The amount of solvent that is evaporated from the sample and into the air is referred to as the “headspace.” The headspace is then extracted with a syringe and placed in the injection port of the GC. This technique is called full-evaporated technique (FET) and utilizes the headspace autosampler for the GC.

Look for a GCMS instrument with a headspace autosampler, which can also be used for pesticide and terpene analysis.

Terpene Profile Testing

Terpenes are produced in the trichomes of the cannabis leaves, where THC is created, and are common constituents of the plant’s distinctive flavor and aroma. Terpenes also act as essential medicinal hydrocarbon building blocks, influencing the overall homeopathic and therapeutic effect of the product. The characterization of terpenes and their synergistic effect with cannabinoids are key for identifying the correct cannabis treatment plan for patients with pain, anxiety, epilepsy, depression, cancer and other illnesses. This test is not required by most states, but it is recommended.

The instrumentation that is used for analyzing terpene profiles is a GCMS with headspace autosampler with an appropriate spectral library. Since residual solvent testing is an analysis required by most states, all of the instrumentation required for terpene profiling will already be in your lab.

As with residual solvent testing, look for a GCMS instrument with a headspace autosampler (see above). 

Microbe, Fungus and Mycotoxin Testing

Most states mandate that cannabis testing labs analyze samples for any fungal or microbial growth resulting from production or handling, as well as for mycotoxins, which are toxins produced by fungi. With the potential to become lethal, continuous exposure to mycotoxins can lead to a buildup of progressively worse allergic reactions.

LCMS should be used to qualify and identify strains of mycotoxins. However, determining the amount of microorganisms present is another challenge. That testing can be done using enzyme linked immunosorbent assay (ELISA), quantitative polymerase chain reaction (qPCR) or matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), with each having their advantages and disadvantages.

For mycotoxin analysis, select a high-sensitivity LC-MS/MS instrument. In addition to standard LC, using an MS/MS selective detector enables labs to obtain limits of detection up to 1000 times greater than conventional LC-UV instruments.

For qPCR and its associated needs, look for a real-time PCR amplification system that combines thermal cyclers with optical reaction modules for singleplex and multiplex detection of fluorophores. These real-time PCR detection systems range from economical two-target detection to sophisticated five-target or more detection systems. The real-time detection platform should offer reliable gradient-enabled thermal cyclers for rapid assay optimization. Accompanying software built to work with the system simplifies plate setup, data collection, data analysis and data visualization of real-time PCR results.

Moisture Content and Water Activity Testing

Moisture content testing is required in some states. Moisture can be extremely detrimental to the quality of stored cannabis products. Dried cannabis typically has a moisture content of 5% to 12%. A moisture content above 12% in dried cannabis is prone to fungal growth (mold). As medical users may be immune deficient and vulnerable to the effects of mold, constant monitoring of moisture is needed. Below a 5% moisture content, the cannabis will turn to a dust-like texture.

The best way to analyze the moisture content of any product is using the thermogravimetric method with a moisture balance instrument. This process involves placing the sample of cannabis into the sample chamber and taking an initial reading. Then the moisture balance instrument heats up until all the moisture has been evaporated out of the sample. A final reading is then taken to determine the percent weight of moisture that was contained in the original sample.

A moisture balance can provide accurate determination of moisture content in cannabis.

Look for a moisture balance that offers intuitive operation and quick, accurate determination of moisture content. The pan should be spacious enough to allow large samples to be spread thinly. The halogen heater and reflector plate should combine to enable precise, uniform heating. Advanced features can include preset, modifiable measurement modes like automated ending, timed ending, rapid drying, slow drying and step drying.

Another method for preventing mold is monitoring water activity (aW). Very simply, moisture content is the total amount of water available, while water activity is the “free water” that could produce mold. Water activityranges from 0 to 1. Pure water would have an aW of 1.0. ASTM methods D8196-18 and D8297-18 are methods for monitoring water activity in dry cannabis flower. The aW range recommended for storage is 0.55 to 0.65. Some states recommend moisture content to be monitored, other states monitor water activity, and some states such as California recommend monitoring both.

Final Thoughts

As you can see, cannabis growers benefit tremendously from cannabis testing. Whether meeting state requirements or certifying a product, laboratory testing reduces growers’ risk and ensures delivery of a quality product. As medicinal and recreational cannabis markets continue to grow, analytical testing will ensure that consumers are receiving accurately

labeled products that are free from contamination. That’s why it is important to invest in the future of your cannabis testing lab by selecting the right analytical equipment at the start of your venture.

A Playbook for Growth: Start with a True Cloud ERP as Your Foundation

By David Stephans
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Cannabis businesses have become a driving force for economic growth in the United States. We’ve all heard the statistics. In 2018, the industry accounted for approximately $10.4 billion in revenue and is slated to grow to $21 billion by 2021.

But with growth comes pressure to produce more, enhance quality and optimize operations. However, managing a cannabis business without modern, capable tools can hinder growth and leave opportunities on the table. That’s why fast-growing cannabis businesses are looking to the proven benefits of a true cloud Enterprise Resource Planning (ERP) platform to help manage production, provide insights and improve business operations. When we add in the complexity and ever-changing nature of regulation, the need for a robust operational system becomes even more critical.

David Stephans will be speaking during CIJ’s October 9th webinar, “Driving Strategic Advantage for your Cannabusiness through Process Efficiency, Quality & Compliance” Click here to learn more and register for free.Cannabis business leaders may want to develop their own “playbook” to differentiate themselves in the market. But before they start to engineer their forward-thinking approach, they should start with a cloud ERP as their foundation. This can help with everything from the most basic of needs to more sophisticated strategies. In this article, we’ll review some key cannabis business goals and tactics, and how ERP can help lay the groundwork for success.

Drive growth and expansion.

Business growth often translates into operational expansion, meaning more facilities, staff and compliance requirements to manage. A cloud ERP supports these functions, including the launch of new products, expanding pricing schedules and increasing production to meet demand. Having the ability to track and manage growth is crucial, and a cloud ERP can provide the real-time reporting and dashboards for visibility across the entire business. This includes not just operational visibility, but also a look into a company’s sales, finances and supply chain.

Foster exemplary customer experience.

Cannabis companies need to streamline processes from the moment an order is placed to when it arrives at the customer’s door. In the mind of consumers, cannabis businesses compete against the likes of Amazon. They must be able to provide a similar experience and level of service, with customers receiving orders in a couple of business days. Cloud ERP can help automate processes. And when things go wrong, it can also help with resolution, especially when it’s paired with a customer relationship management (CRM) system on the same cloud platform. For the B2B market, cloud ERP empowers account management to review past orders to better meet future customer needs.

Stay a step ahead of the game.

In the industry, change is a constant. The future will likely bring about shifts in products, regulations and suppliers. A cloud ERP can modify workflows, controls and process approvals on the fly, so companies can adapt to new requirements. It offers security against emerging risks and easy integration with other systems cannabusinesses may need. An advanced cloud ERP will also provide cutting-edge capabilities, such as AI insights and data-capture from Internet-of-Things (IoT) devices.

Ensure quality product for raving fans and avoid flags on the field through airtight compliance.

Many cannabis companies are passionate about delivering the highest-quality cannabis products. Auditability is key to both quality and compliance. Complete traceability, with lot and serial number tracking, will record comprehensive audit trails from seed to sale. A cloud ERP will incorporate RFID tags down to the plant, lot and product levels to assist in this process. As cannabis goods move through their lifecycle, the cloud ERP will append appropriate tracking to purchasing receipts, inventory as it moves between locations, products as they’re packaged and sales orders as they’re fulfilled.

As a heavily regulated industry, cannabis business is also subject to burdensome compliance standards. A cloud ERP can support the rigorous testing that’s required to assure potency and safety. It easily facilitates Good Manufacturing Practices (GMP) and Good Production Practices (GPP), which ensures products are consistently produced according to quality standards. Many regulatory agencies require digital reporting; cloud ERP can facilitate this requirement through integration with Metrc, Health Canada and the FDA. Compliance can be a costly endeavor, and this type integration saves time, money, and effort.

As you can see, a cloud ERP helps efficiently balance compliance and regulatory requirements, with operational efficiency and customer service – key strategies in any cannabusiness playbook.

A2LA Accredits First Labs in Tennessee and Oklahoma

By Cannabis Industry Journal Staff
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According to a press release published earlier this week, A2LA announced the accreditation of two separate cannabis laboratories in two separate states; both are the first cannabis testing labs accredited in their states. Demeter Laboratory, based in Oklahoma City, Oklahoma, and Galbraith Laboratories, based in Knoxville, Tennessee, achieved the ISO 17025:2017 accreditation.

According to Cassy VanTassel, M.S., quality manager at Demeter Laboratory, Oklahoma is still developing and defining their regulatory framework for cannabis testing requirements. “Even though the State of Oklahoma is still establishing regulations and legislation, Demeter will always strive to meet the highest quality standards, so our customers know they are getting the best quality testing,” says VanTassel. “Demeter chose A2LA as its Accreditation Body due to their reputation in the industry, their diverse clientele, and the quality of their assessors.”

In Tennessee, Galbraith Labs is looking to aid the hemp industry in product safety testing. Christy Myers, customer service manager at Galbraith Laboratories, says they want to help farmers produce safe hemp products. “We are proud of our commitment to stay current within our industry and achieve the high standards set by A2LA,” says Myers. “Adding cannabis testing to our line of services was a great opportunity for Galbraith Laboratories to serve the community by helping farmers produce safe and legal hemp.”

Galbraith Labs was founded in 1950 as a contract lab in Knoxville serving many industries. With their newly established accreditation, they hope to aid the cannabis industry in Tennessee with hemp testing. Demeter Laboratory is the first medical cannabis lab in Oklahoma. Their goals include “advancing quality controls in medical cannabis, supporting safe consumption of cannabis and ensuring the transparency of the cannabis community.”

Fungal Monitoring: An Upstream Approach to Testing Requirements

By Bernie Lorenz, PhD
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Mold is ubiquitous in nature and can be found everywhere.1 Cannabis growers know this all too well – the cannabis plant, by nature, is an extremely mold-susceptible crop, and growers battle it constantly.

Of course, managing mold doesn’t mean eradicating mold entirely – that’s impossible. Instead, cultivation professionals must work to minimize the amount of mold to the point where plants can thrive, and finished products are safe for consumption.

Let’s begin with that end in mind – a healthy plant, grown, cured and packaged for sale. In a growing number of states, there’s a hurdle to clear before the product can be sold to consumers – state-mandated testing.

So how do you ensure that the product clears the testing process within guidelines for mold? And what tools can be employed in biological warfare?

Mold: At Home in Cannabis Plants

It helps to first understand how the cannabis plant becomes an optimal environment.

The cannabis flower was designed to capture pollen floating in the air or brought by a pollinating insect.

Photo credit: Steep Hill- a petri dish of mold growth from tested cannabis

Once a mold spore has landed in a flower, the spore will begin to grow. The flower will continue to grow as well, and eventually, encapsulate the mold. Once the mold is growing in the middle of the flower, there is no way to get rid of it without damaging the flower.

A Name with Many Varieties

The types of spores found in or around a plant can make or break whether mold will end with bad product.

Aspergillus for example, is a mold that can produce mycotoxins, which are toxic to humans2. For this reason, California has mandatory testing3for certain aspergillus molds.

Another example, Basidiospores, are found outside, in the air. These are spores released from mushrooms and have no adverse effects on cannabis or a cannabis cultivation facility.

Fungi like powdery mildew and botrytis (PM and Bud Rot) typically release spores in the air before they are physically noticed on plants. Mold spores like these can survive from one harvest to the next – they can be suspended in the air for hours and be viable for years.

How Mold Travels

Different types of spores – the reproductive parts of mold – get released from different types of mold. Similar to plants and animals, mold reproduces when resources are deemed sufficient.

The opposite is also true that if the mold is under enough stress, such as a depleting nutrient source, it can be forced into reproduction to save itself.4

In the end, mold spores are released naturally into the air for many reasons, including physical manipulation of a plant, which, of course, is an unavoidable task in a cultivation facility.5

Trimming Areas: A Grow’s Highest Risk for Mold

Because of the almost-constant physical manipulation of plants that happen inside its walls, a grow’s trimming areas typically have the highest spore counts. Even the cleanest of plants will release spores during trimming.

Best practices include quality control protocols while trimming

These rooms also have the highest risk for cross contamination, since frequently, growers dry flower in the same room as they trim. Plus, because trimming can be labor intensive, with a large number of people entering and leaving the space regularly, spores are brought in and pushed out and into another space.

The Battle Against Mold

The prevalence and ubiquitous nature of mold in a cannabis facility means that the fight against it must be smart, and it must be thorough.

By incorporating an upstream approach to facility biosecurity, cultivators can protect themselves against testing failures and profit losses.

Biosecurity must be all encompassing, including everything from standard operating procedures and proper environmental controls, to fresh air exchange and surface sanitation/disinfection.

One of the most effective tactics in an upstream biosecurity effort is fungal monitoring.

Ways to Monitor Mold

Determining the load or amount of mold that is in a facility is and always will be common practice. This occurs in a few ways.

Post-harvest testing is in place to ensure the safety of consumers, but during the growing process, is typically done using “scouting reports.” A scouting report is a human report: when personnel physically inspect all or a portion of the crop. A human report, unfortunately, can lead to human error, and this often doesn’t give a robust view of the facility mold picture.

Another tool is agar plates. These petri dishes can be opened and set in areas suspected to have mold. Air moves past the plate and the mold spores that are viable land on the dishes. However, this process is time intensive, and still doesn’t give a complete picture.

Alternatively, growers can use spore traps to monitor for mold.

Spore traps draw a known volume of air through a cassette.The inside of the cassette is designed to force the air toward a sticky surface, which is capable of capturing spores and other materials. The cassette is sent to a laboratory for analysis, where they will physically count and identify what was captured using a microscope.

Spore trap results can show the entire picture of a facility’s mold concerns. This tool is also fast, able to be read on your own or sent to a third party for quick and unbiased review. The information yielded is a useful indicator for mold load and which types are prevalent in the facility.

Spore Trap Results: A Story Told

What’s going on inside of a facility has a direct correlation to what’s happening outside, since facility air comes infromthe outside. Thus, spore traps are most effective when you compare a trap inside with one set outside.

When comparing the two, you can see what the plants are doing, view propagating mold, and understand which of the spore types are only found inside.

Similar to its use in homes and businesses for human health purposes, monitoring can indicate the location of mold growth in a particular area within a facility.

These counts can be used to determine the efficacy of cleaning and disinfecting a space, or to find water leaks or areas that are consistently wet (mold will grow quickly and produce spores in these areas).

Using Spore Traps to See Seasonality Changes, Learn CCPs

Utilizing spore traps for regular, facility-wide mold monitoring is advantageous for many reasons.

One example: Traps can help determine critical control points (CCP) for mold.

What does this look like? If the spore count is two times higher than usual, mitigating action needs to take place. Integrated Pest Management (IPM) strategies like cleaning and disinfecting the space, or spraying a fungicide, are needed to bring the spore count down to its baseline.

For example, most facilities will see a spike in spore counts during the times of initial flower production/formation (weeks two to three of the flower cycle).

Seasonal trends can be determined, as well, since summer heat and rain will increase the mold load while winter cold may minimize it.

Using Fungal Monitoring in an IPM Strategy

Fungal monitoring – especially using a spore trap – is a critical upstream step in a successful IPM strategy. But it’s not the only step. In fact, there are five:

  • Identify/Monitor… Using a spore trap.
  • Evaluate…Spore trap results will indicate if an action is needed. Elevated spore counts will be the action threshold, but it can also depend on the type of spores found.
  • Prevention…Avoiding mold on plants using quality disinfection protocols as often as possible.
  • Action…What will be done to remedy the presence of mold? Examples include adding disinfection protocols, applying a fungicide, increasing air exchanges, and adding a HEPA filter.
  • Monitor…Constant monitoring is key. More eyes monitoring is better, and will help find Critical Control Points.

Each step must be followed to succeed in the battle against mold.

Of course, in the battle, there may be losses. If you experience a failed mandatory product testing result, use the data from the failure to fix your facility and improve for the future.

The data can be used to determine efficacy of standard operating procedures, action thresholds, and other appropriate actions. Plus, you can add a spore trap analysis for pre- and post- disinfection protocols, showing whether the space was really cleaned and disinfected after application. This will also tell you whether your products are working.

Leveraging all of the tools available will ensure a safe, clean cannabis product for consumers.


References

  1. ASTM D8219-2019: Standard Guide for Cleaning and Disinfection at a Cannabis Cultivation Center (B. Lorenz): http://www.astm.org/cgi-bin/resolver.cgi?D8219-19
  2. Mycotoxin, Aspergillus: https://www.who.int/news-room/fact-sheets/detail/mycotoxins
  3. State of California Cannabis Regulations: https://cannabis.ca.gov/cannabis-regulations/
  4. Asexual Sporulation in Aspergillus nidulans (Thomas H. Adams,* Jenny K. Wieser, and Jae-Hyuk Yu):  https://pdfs.semanticscholar.org/7eb1/05e73d77ef251f44a2ae91d0595e85c3445e.pdf?_ga=2.38699363.1960083875.1568395121-721294556.1562683339
  5. ASTM standard “Assessment of fungal growth in buildings” Miller, J. D., et al., “Air Sampling Results in Relation to Extent of Fungal Colonization of Building Materials in Some Water Damaged Buildings,” Indoor Air, Vol 10, 2000, pp. 146–151.
  6. Zefon Air O Cell Cassettes: https://www.zefon.com/iaq-sampling-cassettes

Agilent Partners with LSSU on Cannabis Chemistry & Research

By Aaron G. Biros
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Back in August, Lake Superior State University (LSSU) announced the formation of a strategic partnership with Agilent Technologies to “facilitate education and research in cannabis chemistry and analysis.” The university formed the LSSU Cannabis Center of Excellence (CoE), which is sponsored by Agilent. The facility, powered by top-of-the-line Agilent instrumentation, is designed for research and education in cannabis science, according to a press release.

Chemistry student, Justin Blalock, calibrates an Agilent 1290 Ultra-High Pressure Liquid Chromatograph with a 6470 Tandem Mass Spectrometer in the new LSSU Cannabis Center of Excellence, Sponsored by Agilent.

The LSSU Cannabis CoE will help train undergraduate students in the field of cannabis science and analytical chemistry. “The focus of the new LSSU Cannabis CoE will be training undergraduate students as job-ready chemists, experienced in multi-million-dollar instrumentation and modern techniques,” reads the press release. “Students will be using Agilent’s preeminent scientific instruments in their coursework and in faculty-mentored undergraduate research.”

The facility has over $2 million dollars of Agilent instruments including their UHPLC-MS/MS, UHPLC-TOF, GC-MS/MS, LC-DAD, GC/MS, GC-FID/ECD, ICP-MS and MP-AES. Those instruments are housed in a 2600 square-foot facility in the Crawford Hall of Science. In February earlier this year, LSSU launched the very first program for undergraduate students focused completely on cannabis chemistry. With the new facility and all the technology that comes with it, they hope to develop a leading training center for chemists in the cannabis space.

Dr. Steve Johnson, Dean of the College of Science and the Environment at LSSU, says making this kind of instrumentation available to undergraduate studies is a game changer. “The LSSU Cannabis Center of Excellence, Sponsored by Agilent was created to provide a platform for our students to be at the forefront of the cannabis analytics industry,” says Dr. Johnson. “The instrumentation available is rarely paralleled at other undergraduate institutions. The focus of the cannabis program is to provide our graduates with the analytical skills necessary to move successfully into the cannabis industry.”

Storm Shriver is the Laboratory Director at Unitech Laboratories, a cannabis testing lab in Michigan, and sounds eager to work with students in the program. “I was very excited to learn about your degree offerings as there is a definite shortage of chemists who have experience with data analysis and operation of the analytical equipment required for the analysis of cannabis,” says Shriver. “I am running into this now as I begin hiring and scouting for qualified individuals. I am definitely interested in a summer internship program with my laboratory.”

LSSU hopes the new facility and program will help lead the way for more innovation in cannabis science and research. For more information, visit LSSU.edu.

Legend Technical Services Accredited for Hemp Testing

By Aaron G. Biros
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According to a press release issued last week, the American Association for Laboratory Accreditation (A2LA) accredited Legend Technical Services to ISO/IEC 17025:2005 for industrial hemp testing. Legend Technical Services, based in St. Paul, Minnesota, is currently the only accredited cannabis testing in the state.

The lab is now accredited for medical cannabis testing as well as all industrial hemp testing for the Minnesota Department of Agriculture. According to Carissa Prekker, business development specialist of Legend Technical Services, the accreditation allows them to greatly expand their testing suite. “Our A2LA accreditation has opened up many new opportunities for us to expand our testing capabilities, including industrial hemp”, says Prekker. “We pride ourselves in being the preferred testing laboratory for the Minnesota Industrial Hemp Pilot Program (IHPP) and for offering these services to other industrial hemp growers and processors. In doing so, we have built strong relationships throughout Minnesota with other hemp businesses.”

Trace McInturff, Vice President of Accreditation Services, says Legend Technical Services has been a customer of A2LA for ten years now. “As the only hemp testing laboratory recognized by the Minnesota Department of Agriculture, we are proud they have chosen to expand their A2LA accreditation to include hemp testing,” says McInturff. “We are also very proud to add yet another state to the ever-growing list of states that are relying upon A2LA as their accreditation body”.