摘要
本文对小麦胚芽中油、蛋白质及淀粉的分离制备进行了全面的研究。结果表明,超临界CO2流体萃取小麦胚芽油的最佳操作条件为:萃取压力30MPa,萃取温度50℃,萃取时间2h。碱法制备小麦胚芽蛋白的最佳工艺条件:pH10,时间60min,温度45℃,固液比1:16,提取率为78.97%,酸沉条件:pH4.2,得率为66.16%。木瓜蛋白酶法制备小麦胚芽蛋白的最佳工艺条件:pH5,时间60min,温度60℃,加酶量3000U/g,提取率可达97.98%,酸沉条件:pH4.2,得率为78.15%。油和蛋白质被提取后的残余物经碱洗后即得小麦胚芽淀粉。
This paper studied the comprehensive processing of oil, protein and starch from wheat germ.The results showed that the optimal conditions for wheat germ oil extraction by supercritical CO2 fluid were： extracting pressure 30MPa, extracting temperature 50℃, and extracting time 2h. The optimal conditions for extraction of wheat germ protein by alkali-processing were extracting pH value 10, extracting time 60min,extracting temperature 45 ℃, Solid liquid 1：16, and extracting rate 66.16%, and pH value of acid-depositing 4.2, with yield rate 54.16%. The optimal conditions for extraction of wheat germ protein by papainprocessing were： extracting time 60min, extracting temperature 60℃, and quantity of papain added 3000U/g, with extraction rate summed up to 97.98%, with pH value of acid-depositing 4.2, and yield rate 78.15%. After protein being extracted, wheat germ starch was get through remnant being wished by alkal solution.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2005年第12期147-151,共5页
Food Science
基金
河南省科技攻关项目(0424290041)
郑州市重大科技攻关项目(2002BA02)
