食品科学 ›› 2007, Vol. 28 ›› Issue (4): 231-236.

• 生物工程 • 上一篇    下一篇

原生质体融合构建耐高温高产酒精酵母

 路玲玲, 王敏, 朱会霞, 孙金旭, 檀建新, 张伟   

  1. 河北农业大学食品科技学院生物工程系; 衡水学院生命科学系; 河北农业大学食品科技学院生物工程系 河北 保定 071001; 河北 衡水 053000; 河北 保定 071001;
  • 出版日期:2007-04-15 发布日期:2011-12-31

Building Thermotolerant High-alcohol-producing Yeast by Proplast Fusion

LU  Ling-Ling, WANG  Min, ZHU  Hui-Xia, SUN  Jin-Xu, TAN  Jian-Xin, ZHANG  Wei   

  1. 1.Department of Biology Engineering,College of Food Science and Technology,Agricultural University of HeBei,Baoding 071001,China; 2.Department of Life Science,Hengshui University,Hengshui 053000,China
  • Online:2007-04-15 Published:2011-12-31

摘要: 选择化学药物和紫外灭活单亲原生质体为遗传标记,以0.01%的三唑酮和紫外照射h-1原生质体2min为遗传标记,采用四因素三水平正交试验确定了融合子LZ-3的浓醪酒精发酵工艺。浓醪发酵的最佳工艺条件是:料水比为1:2,糖化酶用量为400U/g原料,接种量为9%(V/V),初始pH值为5.5,在此条件下,以玉米粉的糖化醪为培养基,发酵72h,LZ-3的酒精产率为9.0%。

关键词: 原生质体, 融合, 耐高温, 高产酒精酵母

Abstract: As chemical drugs and UV used to exterminate the single parent protoplasts were choosen as hereditary markers, with 0.01% triadimefon content and irradiated by UV 2 rain,the optimum conditions of the orthogonal test are:33.3%(W/V) concentration of crude corn in fermenting material,400 U/g of glucoamylase(per gram of raw corn),9%(V/V)inoculum of yeast, and initial pH 5.5.The orthogonal test indicated that the fusion strain LZ-3 produces the highest amount of alcohol,or 9.0% alcohol after incubation at 42℃for 72 hours.

Key words: protoplast, fusion, thermotolerant, high-alcohol-producing yeast