食品科学 ›› 2008, Vol. 29 ›› Issue (7): 277-280.

• 生物工程 • 上一篇    下一篇

ε-PL聚赖氨酸产生菌原生质体的制备与再生

于雪骊,刘长江, 种婷   

  1. 沈阳农业大学食品学院; 沈阳农业大学食品学院 辽宁沈阳110161; 辽宁沈阳110161
  • 出版日期:2008-07-15 发布日期:2011-07-28

Protoplasts Preparation Regeneration and Twice Mutagenesis of Strain Producing ε-polylysine

 YU  Xue-Li, LIU  Chang-Jiang, ZHONG  Ting   

  1. College of Food Science,Shenyang Agricultural University,Shenyang 110161, China
  • Online:2008-07-15 Published:2011-07-28

摘要: 本实验对ε-聚赖氨酸产生菌-白色链霉菌的原生质体制备、再生条件进行了研究,建立了白色链霉菌原生质体诱变体系。在此基础上,通过对原生质体进行脉冲光诱变,氦氖激光诱变,筛选得到一株高产菌株;通过双层平板实验证明比出发菌株抑菌圈的H/C大0.28~0.45cm;通过发酵证明比出发菌株产ε-聚赖氨酸的能力提高40%以上。

关键词: &epsilon, -聚赖氨酸, 白色链霉菌, 原生质体, 诱变

Abstract: To screen high ε-polylysine-producing mutants of Streptomyces albulus, the methods of protoplast preparation, regeneration and mutagenesis were established. Thereafter, the protoplasts of the original strain were treated by pulsed-ligh and He-Ne laser. The double layer culture medium test proved that the H/C value of mutation is 0.28~0.45 cm, bigger than that of the original strain. The fermentation result showed its ε-polylysine productivity is higher 40% than that of the original strain.

Key words: &epsilon, -polylysine; Streptomyces albulus; protoplast; mutation