丙酮/己烷/水非均相混合溶剂浸出棉籽油及脱除棉酚工艺条件的研究

Studies on Technological Conditions of Extracting Contton Seed Oil and Gossypol With Acetone/Hexane/Water Non honogneous Phase Mixture

用丙酮／己烷／水非均相混合溶剂浸出冷榨棉饼提油和脱酚的最佳工艺条件是：调节生坯的水分使冷榨棉饼含水１３％左右，丙酮／己烷／水非均相混合溶剂配比为：５０／５０／６（Ｖ／Ｖ／Ｖ），浸出温度４７℃，溶剂／饼＝５∶１（ｍｌ／ｇ），浸出时间１５０ｍｉｎ。在此条件下可使棉籽粕中残留的游离棉酚＜０．０４５％，总棉酚＜０．６１％，残油率＜１．０％。

Extracting oil and gossypol with acetone hexane water nonhomogeneous phase mixture from cake obtained by cool repressing cottonseed flakes is studied in this paper.The optimum technological conditions are as follows:adjust the moisture of the flakes to ensure that the water content of the cool pressed cake is 13% or so,the ratio of the solvent mixture is 50/50/6(A/H/W,V/V/V);extraction temperature is 47℃,extraction time is 150 min.Under the above conditions,the residual free gossypol content,total gossypol content and the residue oil of the meals are lower than 0 045%,0 61%,1 0%respectively.