A non-organic solvent process for the efficient recovery of canola oil
Conventional processing of canola (Brassica napus) generally uses either, a combination of seed expelling plus organic solvent based oil extraction, or non-organic solvent processes that are based solely on expelling of the seed. Organic solvent based oil extraction is highly efficient (＞96％ oil recovery) in comparison to non-organic solvent based expeller only processes (generally 80％ oil recovery). As such solvent extraction processes tend to dominate. However, environmental and safety concerns with the use of organic solvents are such that non-organic solvent based processes would be preferred if the efficiency of oil recovery approached that of organic solvent extraction. MCN BioProducts Inc. has developed a proprietary non-organic solvent process for high efficiency recovery of canola oil in the form of free oil and oil contained in a high valued concentrate of insoluble protein. The process uses expellers for a front end mechanical de-oiling as typical for conventional non-solvent processes. The cake containing the residual oil is then slurried in water and processed through an aqueous fractionation scheme that generates a fibrous fraction, a concentrate of insoluble protein and a liquid stream. Conditions are set such that 20％ ofthe residual oil in the expelled cake is directed to the low valued fibrous production, 20％ to the high valued insoluble protein concentrate and 60％ to the liquid stream. The liquid stream is then processed through an oil-water separation with the generation of free oil that is mixed with expelled oil. The net result is 92％ recovery of whole seed oil as free oil plus 4％ recovery of oil within the high valued protein concentrate product. As such the combination of conventional oilseed expelling plus aqueous oil extraction results in a net oil recovery as high valued products that approaches that of organic-solvent based extraction processes.
David D.Maenz
MCN BioProducts Inc.860-410 22nd ST.E., Saskatoon, SK, Can ada, S7K 6R3
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1709-1711
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）