›› 2012, Vol. 39 ›› Issue (3): 125-129.

• 生理生化 • 上一篇    下一篇

产角蛋白酶菌株的筛选、鉴定和发酵特性的初步研究

郭刚1, 楚杰1,2, 王君高1, 刘可春2   

  1. 1. 山东轻工业学院食品与生物工程学院,山东济南 250353;2. 山东省科学院生物研究所,山东济南 250014
  • 收稿日期:2011-11-09 修回日期:1900-01-01 出版日期:2012-03-20 发布日期:2012-03-20
  • 通讯作者: 楚杰

Screening,Identification of a Strain with High Keratinase Production and the Primary Study of its Characterization of Fermentation

GUO Gang1, CHU Jie1,2, WANG Jun-gao1, LIU Ke-chun2   

  1. 1. School of Food & Bioengineering, Shandong Institute of Light Industry, Jinan 250353, China;2. Biology Research Institute of Shandong Academy of Science, Jinan 250014, China
  • Received:2011-11-09 Revised:1900-01-01 Online:2012-03-20 Published:2012-03-20

摘要: 通过酪蛋白平板初筛,以羽毛为唯一的碳源与氮源复筛,筛选出一株新型的高产角蛋白酶的菌株S6,根据其形态观测结果和生理生化指标的测定结果,初步鉴定其属于地衣芽孢杆菌属。以羽毛为底物对地衣芽孢杆菌S6的发酵特性初步研究发现,在72 h,地衣芽孢杆菌S6酶活性、可溶性蛋白量达到最大,分别为186.8 U/mL,160.87 μg/mL,表明在降解羽毛的过程中,其具有很好的开发前景。

关键词: 筛选; 鉴定; 地衣芽孢杆菌; 角蛋白酶活力; 可溶性蛋白

Abstract: A strain with high keratinolytic activity was obatained by casein plate firstly and feather as the sole carbon source and nitrogen source in submerged medium secondly.The strain S6 was identified as Bacillus licheniformis based on its morphologic and physicochemical characteristics.After fermenting 72 h in submerged culture,the Bacillus licheniformis S6 demonstrated highest keratinolytic activity and maximum of soluble protein, 186.8 U/mLand 160.87 μg/mL,respectively,which expresses that Bacillus subtilis S6 has a promising prospect in the degradation process of feather.

Key words: screen; identification; Bacillus licheniformis; keratinolytic activity; soluble protein

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