食品科学 ›› 2005, Vol. 26 ›› Issue (12): 147-151.

• 工艺技术 • 上一篇    下一篇

小麦胚芽中油、蛋白质及淀粉的分离制备

 舒友琴, 扶庆权   

  1. 郑州牧业工程高等专科学校,郑州轻工业学院
  • 出版日期:2005-12-15 发布日期:2011-10-01

Comprehensive Processing of Oil, Protein and Starch from Wheat Germ

 SHU  You-Qin, FU  Qing-Quan   

  1. 1.Zhengzhou College of Animal Husbandry Engineering; 2.Zhengzhou University of Light Industry
  • Online:2005-12-15 Published:2011-10-01

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。

关键词: 小麦胚芽, 蛋白质, 木瓜蛋白酶

Abstract: 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, and extracting rate 66.16%, and pH value of acid-depositing was 4.2, with yield rate 54.16%. The optimal conditions for extraction of wheat germ protein by papain- processing were: extracting time 60min, extracting temperature 60℃, and quantity of papain added 3000Ug, 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 alkai solution.

Key words: wheat germ, protein, papain