亚麻籽双液相多级逆流萃取工艺模拟试验

Technology simulation of multistage adverse current extraction by two-liquid-phase system for flaxseed

为了考察双液相技术萃取亚麻籽的工业化效果,应用模拟试验探讨了多级逆流萃取工艺应用于正己烷-乙醇-水三元双液相亚麻籽萃油脱氰苷生产的可行性。结果表明,在料烷比1︰5(m/V),料醇比1︰2(m/V),温度55℃,时间30min,乙醇质量分数85%(m/m),NaOH添加量为乙醇相0.05%(m/V)的条件下,实验室串级模拟四级逆流萃取达到工艺要求,亚麻粕中残油量小于1%,氰苷残余小于0.7mg/kg,多级逆流接触法萃取流程适宜于亚麻籽双液相萃油脱氰苷生产工艺。

In order to investigate industrialized results of extracting flaxseed by two-liquid-phase technology,the feasibiltity of multistage adverse current extraction technology in oils and cyanogenic glycosides extracted simultaneously from flaxseed by two-liquid-phase system of ethanol-hexane-water was discussed using model experiment. The optimum extracting conditions are ethanol 85%（m/m） ,material ：ethanol = 1︰2（m/V） ,material ：hexane = 1︰5（m/V） ,time 30 min,temperature 55℃,NaOH concentration 0.05%（m/V） in ethanol. Serial simulation of four stages adverse current extraction decreased concentration of oils and cyanogenic glycosides in flaxseed flakes to less than 1% and 0.7 mg/kg,respectively. Flow diagram for multistage adverse current extraction is fit for process of flaxseed oils and cyanogenic glycosides extracted by two-liquid-phase system.