The BioExx extraction technology requires less energy input in the solvent recovery process. This results in higher value meal, higher quality oil, and more nutritional proteins.
Using Canola as an example, in a typical solvent-based extraction process, the biomass is first pre-pressed to expel approximately half of the oil contained in the oilseed. The remaining oil is then removed by 'washing' the seed with a solvent that removes 95 to 97% of the remaining oil. This solvent, typically a petrochemical, must then be recovered from the oil and remaining biomass, the 'meal'. These petrochemical based solvents boil at between 65°C and 70°C and as a result the meal is heated with steam to well over 100°C to recover the solvent which in turn exposes the proteins to temperatures well above the point where they start to degrade.
In the BioExx extraction process, the biomass is pre-pressed and the remaining oil is removed using a patented refrigerant based solvent. The key difference is the BioExx solvents have a boiling temperature of approximately minus 20°C, which allows for a cost effective solvent recovery. The BioExx extraction process maintain the solvent at less than 50°C, a temperature below the point at which proteins begin to denature. These differences, although apparently simple, result in a system that produces higher quality and added value oil, meal and specialty proteins
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