Root Sciences established one of the first cannabis cultivation and processing operations in the United States in 2013; since then, it has continued to play a major role in developing industry-leading technology for producing cannabis concentrates. Five years after the company introduced wipe-film short-path molecular distillation technology to cannabis processing, Root Sciences has partnered with DEVEX Verfahrenstechnik GmbH, Germany, a leading global manufacturer of plant extraction solutions, with the ultimate goal of improving the entire cannabinoid extraction and purification process. Combining their respective expertise, the two companies launched the CryoEXS extraction system together in 2019, with DEVEX supplying the system directly in Europe; reducing the time requirements for extraction and post-processing from days to just a few hours.
In today's competitive market, it is no secret that companies are constantly seeking to increase their competitive advantage by streamlining processes, increasing yields, reducing costly downtime, and lowering production costs. This is exceptionally true for extraction companies operating within the fast-growing hemp and cannabis industry. Often, one of the most effective ways for cannabis processors to radically improve their bottom line is to invest in reliable equipment specifically designed to meet the unique requirements of their operations.
The CryoEXS system is the clear choice for business owners and investors looking to maximize the potential of their processing operations. The system's streamlined design reduces equipment requirements, while its automated features and in-place cleaning procedures minimize downtime. These advantages make efficiency, consistency and increased profit potential possible.
Traditional Extraction Technology
Traditionally, cannabis crude oil CO2 Extraction Machine has been extracted from plant material through one of these three processes: CO2 extraction; light hydrocarbon extraction; and warm ethanol extraction. Each of these traditional methods has its niche in the cannabis industry, and all offer small-scale solutions for the extraction of cannabinoids. However, each of these three older methods also has some unfortunate drawbacks and requires several pre-treatment and post-treatment stages, including.
Biomass decarboxylation.
Winterization
Dewaxing
Solvent recovery; and
Final decarboxylation.
In order to effectively extract CO2, the biomass must first be initially decarboxylated to increase the solubility of the cannabinoids in the CO2 solvent.CO2 does not effectively solubilize many acidic cannabinoids, so the biomass must be heated in order to convert most of the cannabinoids to their neutral form. This not only requires large ovens, but also adds cost and time to the production process. Carbon dioxide is a tunable solvent with interesting selectivity; however, unfortunately, this preliminary decarboxylation process also evaporates valuable terpenes.
After generating the crude extract, each method requires the removal of lipids (fats and waxes) by a process defined as peroxidation, which involves dissolving the crude extract in a flammable solvent and then cooling it to about -40°C for at least 24 hours. Once these undesirable compounds have settled, they must be removed by physically filtering the slurry while maintaining these low temperatures, a process commonly referred to as dewaxing. This filtration process is known to be time intensive and difficult and requires a great deal of attention from the operator to ensure proper and efficient removal of fats and waxes.
After careful winterization and dewaxing of the crude extracts, the solvent must be distilled to produce a concentrate. Due to the flammability of this expensive solvent, additional vacuum distillation equipment is required to safely recover this solvent. Extractors often find that local, state and federal regulations require the entire winterization, dewaxing and solvent recovery process to be conducted in special fireproof environments. These specially designed environments, often separate from the extraction environment, can be costly and take up valuable floor space.
Finally, to achieve the vacuum depth required for molecular distillation, the solvent-free concentrate must also be decarboxylated, regardless of any initial decarboxylation in the case of CO2 extraction. This decarboxylation is achieved by heating the concentrate above 130°C - a temperature well above what most solvent recovery systems can achieve. Therefore, another specialized equipment is required
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