食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 207-209.doi: 10.7506/spkx1002-6630-200919047

• 生物工程 • 上一篇    下一篇

米曲霉纤维素酶高产菌株的诱变育种研究

马 琼1,2   

  1. 1.生物资源保护与利用湖北省重点实验室 2.湖北民族学院生物科学与技术学院
  • 收稿日期:2009-06-15 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 马 琼
  • 基金资助:

    湖北省教育厅重点项目(D20092904); 恩施自治州科技攻关项目(2007A06)

Screening High-yield Cellulase-producing Mutants of Aspergillus oryzae

MA Qiong1,2   

  1. 1. Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi 445000, China;
    2. College of Bioscience and Technology, Hubei Institute for Nationalities, Enshi 445000, China
  • Received:2009-06-15 Online:2009-10-01 Published:2010-12-29
  • Contact: MA Qiong

摘要:

以米曲霉作为原始菌株,通过在纤维素培养基上驯化,经硫酸二乙酯(DES)、紫外线照射复合诱变,确定最适复合诱变条件为:用0.1ml 15% DES处理后,紫外线照射用30W紫外灯,垂直距离20cm,照射时间为60s,得到一株高产纤维素酶的突变菌株Ⅱ5,其纤维素酶活力高达100.23U/100ml,为出发菌株的1.39倍。

关键词: 米曲霉, 诱变育种, 纤维素酶

Abstract:

Aspergillus oryzae was selected as the initial strain for breeding cellulase-producing mutants. A mutant strain, C3 was obtained through combinatorial mutagenization with UV and DES. The optimal mutation conditions were sequential treatment with 0.1 ml of 15% DES and then illumination with 30 W UV lamp for 60 seconds at a distance of 20 cm. The cellulase activity of this high-yield strain reached 100.23 U/100 ml, which was 1.39 times of that of initial strain.

Key words: Asperqillus oryzae, breeding, cellulase

中图分类号: