食品科学 ›› 2008, Vol. 29 ›› Issue (10): 404-407.

• 生物工程 • 上一篇    下一篇

废弃啤酒酵母泥除杂、脱苦工艺条件的筛选与其RNA提取技术的优化

 刘博群, 刘静波, 李海霞, 王晓丽, 林松毅   

  1. 吉林大学军需科技学院营养与功能食品研究室;
  • 出版日期:2008-10-15 发布日期:2011-12-08

Optimization of Impurity Removal,Debittering and RNA Extraction Technologies of Waste Beer Yeast Paste

 LIU  Bo-Qun, LIU  Jing-Bo, LI  Hai-Xia, WANG  Xiao-Li, LIN  Song-Yi   

  1. Laboratory of Nutrition and Functional Food,College of Quartermaster Technology,Jilin University,Changchun 130062,China
  • Online:2008-10-15 Published:2011-12-08

摘要: 本实验以全麦、辅料、小麦、黑麦4种啤酒废弃酵母泥为研究对象,采用对比分析和L16(45)正交试验设计方法,着重探讨了啤酒废弃酵母泥除杂、脱苦工艺与其RNA提取技术参数。研究发现:当采用酵母浓度8%,过80目筛两次除杂,5%酒石酸脱苦30min时,可获得纯净啤酒酵母细胞的得率为23%~46%;采用高温盐析法提取废弃啤酒酵母泥中RNA的最佳工艺条件为:提取时间5h,提取温度100℃,酵母浓度4%,NaCl浓度12%,提取率高达13.8%。

关键词: 啤酒废酵母泥, RNA, 提取

Abstract: The optimal impurity removal technology of waste beer yeast paste is determined as removing the impurity by twice sieving the waste beer yeast paste with the yeast concentration of 8% at 80 meshes. Based on the above technology,after using 5% tartrate to debitter for 30 min,the yields of the purified beer yeast cells from four kinds of waste beer yeast paste (whole barley,adjuvant,wheat and rye) are up to 23%~46%. Through orthogonal test,the optimal technological conditions for extrcting RNA from the purified beer yeast cells by salt fractionation at high temperature are determined as follows: extraction time 5 h,temperature 100 ℃,concentration of yeast 4% and concentration of NaCl 12%. The extraction rate of RNA reaches 13.8%.

Key words: waste beer yeast paste, RNA, extraction