Tag Archives: blend

CBD Blending, Transportation & Supply – How Sustainable Manufacturing Can Improve Your Cost-Efficiency at all Stages

By Rachel Morgan
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Environmentally conscious manufacturing has never been more important; for the survival of both the planet and your business. The internet makes CBD product comparisons quick and efficient, so consumers can interrogate every aspect of your product and processes before deciding to make a purchase. Sustainability credentials are now a primary decision making factor for your customers.

Water jacketed vessels are a cost-effective way of achieving more consistent blends than is possible manually

For business of all sizes, improving resource use and efficiency is a great place to start. This will reduce waste and improve your environmental impact, and has the added benefit of improving your return on investment!

I always recommend investing in stainless steel equipment for manufacturing and distributing CBD oils. Stainless steel is one of the most environmentally efficient raw materials, because of its durability and ability to be recycled. Vessels last an extremely long time, and even once their service life is over, they should never enter the waste stream. Many of our US customers transport their CBD products around the world in stainless steel vessels, which can then either be shipped back for re-use, or re-used at the recipient site.

In terms of finding your ideal equipment supplier, those who have won awards for their environmental initiatives are the cream of the crop; they can be a real asset to your business and will often collaborate on sustainability-themed social content, which is really valuable to get in front of your customers.

Once you’ve investigated the credentials of suitable suppliers, how do you make sure their blending equipment will perfectly meet your needs?

Here are my recommended four points for consideration:

  1. Adding Toggle Clamps keeps your products airtight and reduces the chance of contamination in transit

    Vessel Capacity: Vessel capacity must be considered in two ways; maximum and minimum working capacity. Standard vessels have their capacity listed as ‘brim full’ – suppliers tell you the total overall volume of space in the vessel. However, maximum capacity must allow for 10-20% free space below ‘brim full’, so that if product is being mixed and stirred, there is no overspill. For example; to blend 75L batches of CBD oil, it’s generally recommended to purchase a 100L mixing vessel.

  2. Vessel Bottom Shape: Standard vessels have flat bottoms, which makes it difficult to drain them to completely empty. An experienced supplier such as Pharma Hygiene Products has the capability to modify standard vessels, to include a sloped bottom at 3 degrees, which reduces leftover product pooling when draining your oils. Vessels can also be custom-made with a cone or dish shaped bottom, whereby a valve can be positioned in the centre of the base to allow full draining, to reduce waste and increase profitability.
  3. Stainless Steel Grade: Stainless steel blending vessels for CBD oils are generally offered in 304 or 316L pharmaceutical-grade material. A simple description of the difference is that 316L grade contains an extra 2% molybdenum, for additional corrosion-resistance. Increased regional and interna­tional legislation concerning CBD products has come hand-in-hand with tighter interrogation of hygiene practices. Contaminant-free materials such as stainless steel are ideal to ensure international pharma-quality compliance for your business’ blending processes. Critically, at Pharma Hygiene Products a comprehensive range of compliance certification is available to confirm the grade of material, to prove surface smoothness, and to guarantee that no cross-contamination from BSE or CJD diseases occurs.

    Hygienic stainless steel CBD storage & transportation vessels
  4. Lastly, don’t forget to let your supplier know in advance if you have any special requirements for your product or vessel. Some common examples include:
  • Flammable product components – Requiring ATEX certified blending equipment.
  • Temperature control – Adding a water jacket to your vessel is a simple solution for heating, cooling or maintaining the temperature of your product as it blends.
  • Toggles and seals – For airtight, contaminant-free transportation.
  • Viewing holes – For easy visual inspection whilst blending.

Your equipment supplier can be a real financial and reputational asset, so be sure to do your homework before making an investment!

dSPE cleanups

The Grass Isn’t Always Greener: Removal of Purple Pigmentation from Cannabis

By Danielle Mackowsky
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dSPE cleanups
strains
Cannabis strains used (clockwise from top left): Agent Orange, Tahoe OG, Blue Skunk, Grand Daddy and Grape Drink

Cannabis-testing laboratories have the challenge of removing a variety of unwanted matrix components from plant material prior to running extracts on their LC-MS/MS or GC-MS. The complexity of the cannabis plant presents additional analytical challenges that do not need to be accounted for in other agricultural products. Up to a third of the overall mass of cannabis seed, half of usable flower and nearly all extracts can be contributed to essential oils such as terpenes, flavonoids and actual cannabinoid content1. The biodiversity of this plant is exhibited in the over 2,000 unique strains that have been identified, each with their own pigmentation, cannabinoid profile and overall suggested medicinal use2. While novel methods have been developed for the removal of chlorophyll, few, if any, sample preparation methods have been devoted to removal of other colored pigments from cannabis.

QuEChERS
Cannabis samples following QuEChERS extraction

Sample Preparation

Cannabis samples from four strains of plant (Purple Drink, Tahoe OG, Grand Daddy and Agent Orange) were hydrated using deionized water. Following the addition of 10 mL acetonitrile, samples were homogenized using a SPEX Geno/Grinder and stainless steel grinding balls. QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) non-buffered extraction salts were then added and samples were shaken. Following centrifugation, an aliquot of the supernatant was transferred to various blends of dispersive SPE (dSPE) salts packed into centrifugation tubes. All dSPE tubes were vortexed prior to being centrifuged. Resulting supernatant was transferred to clear auto sampler vials for visual analysis. Recoveries of 48 pesticides and four mycotoxins were determined for the two dSPE blends that provided the most pigmentation removal.

Seven dSPE blends were evaluated for their ability to remove both chlorophyll and purple pigmentation from cannabis plant material:

  • 150 mg MgSO4, 50 mg PSA, 50 mg C18, 50 mg Chlorofiltr®
  • 150 mg MgSO4, 50 mg C18, 50 mg Chlorofiltr®
  • 150 mg MgSO4, 50 mg PSA
  • 150 mg MgSO4, 25 mg C18
  • 150 mg MgSO4, 50 mg PSA, 50 mg C18
  • 150 mg MgSO4, 25 mg PSA, 7.5 mg GCB
  • 150 mg MgSO4, 50 mg PSA, 50 mg C18, 50 mg GCB

Based on the coloration of the resulting extracts, blends A, F and G were determined to be the most effective in removing both chlorophyll (all cannabis strains) and purple pigments (Purple Drink and Grand Daddy). Previous research regarding the ability of large quantities of GCB to retain planar pesticides allowed for the exclusion of blend G from further analyte quantitation3. The recoveries of the 48 selected pesticides and four mycotoxins for blends A and F were determined.

dSPE cleanups
Grand Daddy following various dSPE cleanups

Summary

A blend of MgSO4, C18, PSA and Chlorofiltr® allowed for the most sample clean up, without loss of pesticides and mycotoxins, for all cannabis samples tested. Average recovery of the 47 pesticides and five mycotoxins using the selected dSPE blend was 75.6% were as the average recovery when including GCB instead of Chlorofiltr® was 67.6%. Regardless of the sample’s original pigmentation, this blend successfully removed both chlorophyll and purple hues from all strains tested. The other six dSPE blends evaluated were unable to provide the sample clean up needed or had previously demonstrated to be detrimental to the recovery of pesticides routinely analyzed in cannabis.


References

(1)           Recommended methods for the identification and analysis of cannabis and cannabis products, United Nations Office of Drugs and Crime (2009)

(2)            W. Ross, Newsweek, (2016)

(3)            Koesukwiwat, Urairat, et al. “High Throughput Analysis of 150 Pesticides in Fruits and Vegetables Using QuEChERS and Low-Pressure Gas Chromatography Time-of-Flight Mass Spectrometry.” Journal of Chromatography A, vol. 1217, no. 43, 2010, pp. 6692–6703., doi:10.1016/j.chroma.2010.05.012.