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Concentration 2019
May 30, 2019, Pala, USA
Concentration 2019
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Extraction-Processing & Cannabis End-Products
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About the talk

A diversity of commercial food products can be made from cannabis and hemp extracts, using both crude or winterized “oils”, distillates, and isolates, as documented in the literature. The manufacturing of these food-related end products involves processes such as extraction, phase separation, and distillation under vacuum. There is preference for consumer-friendly solvents that are generally regarded as safe (GRAS) such carbon dioxide, ethanol, water, and propane or butane; and triglyceride-based oils. Frequently CO2 is preferred as a solvent because it is environmentally-benign, consumer-friendly, and selective as an extraction solvent. Here we invoke solubility parameter theory (SPT) to explain the solubility/miscibility behavior of the above solvents towards cannabinoid, terpene, and non-polar contaminating solutes that must be removed using the above processes. This approach can also be used in formulating various food products in which cannabis extracts and distillated are infused into a food matrix. Note is made of the fact that the infused cannabinoids are converted under the influence of heat and over time to other cannabinoids. Due to the difficulty of retaining terpenes during the above processing steps, back-addition of terpenes is frequently practiced. Numerous examples are provided of foods that are infused with defined cannabis/hemp extracts and distillates, and an example of an appropriate analysis and requisite labeling associated with a cannabinoid-infused product provided.

02:22 Path of cannabis or hemp processing

04:09 Extraction and processing fluids utilized for cannabis

09:04 Equations pertinent to solubility and miscibility between solutes – solvent

19:30 Use of activity coefficient theory to predict miscibility and solubility of solutes during processing

24:53 Some extraction results with CO2

27:48 Fractionation of extract in separator vessels

28:58 Extraction with Propane & Dimethyl Ether (DME) – CI

33:21 Winterization technique

35:17 Recrystallization

42:47 Many types of hemp extract infusibles

45:48 GW Pharma FDA-approved cannabinoid-based drugs

48:26 Extract the role of chromatography in cannabis or hemp processing

51:55 Reference hemp components sample captured on MIP from Ethanol

53:06 Hemp seed oil

55:20 Need for the following physicochemical data

About speaker

Jerry W. King
Chairman at 10th International Symposium on Supercritical Fluids(ISSF-2012)

Dr. King’s research and teaching focus is in the area of chemical separations, particularly in the use of sub- and supercritical fluids for chemical processing. Research is conducted to develop environmentally-benign methodology using compressed carbon dioxide and/or water as media for conducting extractions and reactions of natural/agricultural products, CO2 – based cleaning technology, as well as application to materials modification. These efforts have resulted in approximately 250 publications and 3 patents to date and many national/international presentations. A current research focus is to optimize the use of hot compressed water as a selective extraction agent or medium in which to process biomass. Using the above approach, coupled unit processes are developed with respect to yielding a sustainable “green” process, which has been optimized with respect to thermodynamics and mass transfer principles. Experimental approaches involve the measurement of high pressure phase equilibrium, solute solubility measurements in compressed fluids, and the use of chromatographic methods for physicochemical properties determination.

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Well, thank you for showing up. I wasn't sure of being the last speaker. There'd be a nice core on but I think it's so you're staying around. So let me come and get on with my talk here. Yes. I've been around a long time pickling area CO2 extraction and in pressurized water hydraulic and all I could scratch and things like that. But I like to address here today is linking fraction and processing techniques and the resulting products that come from them because I think

what you get out of the extractor to some degree to the post-extraction processing determines what you're going to use in the product. So if I'm successfully describing that link up success. Going to probably sit out here where I can see the screen comfortably but this is sort of a Billet list of what I'm going to present here. And the first one is obvious but I've said that we'll talk about the extraction of the importance of phase separation and distillation. Tickly under vacuum in the sequential processing of

cannabis. So you'll see our kind of the flow diagram very quickly and we're going to bring up some I guess you'd say Siri or mathematics. I mean, how can you have a technology platform without math equations? The truth is you really can't so I've tried to simplify this and hopefully that'll come through with you with the solubility parameter Siri and also calculating activity coefficient. I'll try to explain them

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