食品科学 ›› 2007, Vol. 28 ›› Issue (9): 378-383.

• 生物工程 • 上一篇    下一篇

青稞酒曲中酿酒酵母与假丝酵母原生质体形成与再生条件的研究

 杜木英, 陈娟, 阚建全, BATA-VIDACS Ildiko, BECZNER Judit, 陈宗道   

  1. 西南大学食品科学学院; Central Food Research Institute Budapest Hungary; Central Food Research Institute; Budapest Hungary; 重庆400716;
  • 出版日期:2007-09-15 发布日期:2011-11-22

Research on Protoplast Formation and Regeneration of Two Yeasts Isolated from Highland Barley Wine Starters

DU  Mu-Ying, CHEN  Juan, HAN  Jian-Quan, BATA-VIDACS  Ildiko, BECZNER  Judit, CHEN  Zong-Dao   

  1. 1.College of Food Science,Southwest University,Chongqing 400716,China;2.Central Food Research Institute,Budapest Hungary
  • Online:2007-09-15 Published:2011-11-22

摘要: 本实验通过研究酶种类、菌龄、酶浓度及酶的作用时间、菌体预处理及渗透压稳定剂等不同因素对原生质体形成与再生的影响,得出了青稞酒曲酵母ZY2,ZY8原生质体制备和再生的最佳条件:酵母ZY2在菌龄为10h,0.1mol/LEDTA+0.1%β-巯基乙醇为预处理剂作用10min;30℃下用1.5%的蜗牛酶酶解1h;酵母ZY8在菌龄为10h,0.1mol/LEDTA+20mmol/L2-硫苏糖醇混合于蜗牛酶1.5%+溶壁酶1%的酶解体系中,30℃下酶解1h;配制酶解液时渗透压稳定剂采用0.7mol/LKC1,在稀释及配制再生培养基时采用17%蔗糖的条件下,酵母ZY2形成率达94.15%,再生率达13.85%;酵母ZY8形成率达88.78%,再生率达23.02%。

关键词: 青稞酒曲, 酿酒酵母, 假丝酵母, 原生质体制备, 原生质体再生

Abstract: The optimum conditions for preparation and regeneration of ZY2 and ZY8 protoplasts were obtained by studying the effects of different factors on them as following.Treating 10-hour culture of strain ZY2 or ZY8 in logarithmic growth phase with concentration of 1.5% snailase or 1.5% snailase and 1.0% lywallzyme for 1 hour,after pretreatment on the cells with 0.1% β-mercaploethanol or together treated with 20 mmol/L DTT.With 0.7 mol/L KC1 as osmotic stabilizer during the protoplast formation and 17% sucrose for the regeneration,the protoplast formation is 94.15% and 88.78%,and regeneration ratio reaches 13.85% and 23.02% respectively.

Key words: highland barley wine starter, Saccharomyces cerevisiae, Candida sp., protoplast formation, protoplast regeneration