检验医学 ›› 2017, Vol. 32 ›› Issue (4): 338-342.DOI: 10.3969/j.issn.1673-8640.2017.04.021

• 基础研究 论著 • 上一篇    下一篇

纤溶酶产生菌的鉴定及产酶优化

李立卓1, 黄环静2, 李卓伟3, 郑梅4   

  1. 1.河北医科大学第一医院心血管内科,河北 石家庄 050031
    2.华北制药金坦生物技术股份有限公司,河北 石家庄 050035
    3.河北远征药业有限公司,河北 石家庄 050041
    4. 石家庄市第一医院心内三科,河北 石家庄 050011
  • 出版日期:2017-04-20 发布日期:2017-05-01
  • 作者简介:null

    作者简介:李立卓,男,1982年生,硕士,主治医师,主要从事冠心病诊治、临床实验研究。

    通信作者:郑 梅,联系电话:0311-86861310。

Identification of fibrinolytic enzyme-producing strain and optimization of producing enzyme conditions

LI Lizhuo1, HUANG Huanjing2, LI Zhuowei3, ZHENG Mei4   

  1. 1. Department of Cardiology,the First Hospital of Hebei Medical University,Shijiazhuang 050031,Hebei,China
    2. NCPC GeneTech Biotechnology Co.,Ltd.,Shijiazhuang 050035,Hebei,China
    3. Hebei Yuanzheng Pharmaceutical Co.,Ltd.,Shijiazhuang 050041,China
    4. Department 3 of Cardiology,the First Hospital of Shijiazhuang,Shijiazhuang 050011,Hebei,China
  • Online:2017-04-20 Published:2017-05-01

摘要:

目的 对纤溶酶产生菌——LZ-01菌株进行种属鉴定并优化其产酶能力。方法 对LZ-01菌株的形态特征进行观察,并进行生理生化试验和phoR基因的序列相似性分析以确定菌株种属,通过单因素试验考察碳源、氮源等对菌株发酵产酶活力的影响,采用正交实验确定菌株最佳产酶工艺条件。结果 经鉴定,LZ-01菌株与解淀粉芽孢杆菌标准菌株FZ42的相似度达99.78%,鉴定LZ-01菌株为解淀粉芽孢杆菌。经工艺优化后的酶活力是未经优化酶活力的3.63倍。结论 本研究为进一步开发纤溶酶制剂溶栓药物提供了一定的理论依据。

关键词: 纤溶酶, 鉴定, 解淀粉芽孢杆菌, 优化, 单因素试验, 正交试验

Abstract:

Objective To identify fibrinolytic enzyme-producing strain (LZ-01) and optimize producing enzyme conditions. Methods The morphological characteristics of LZ-01 were observed. Physiological and biochemical tests and the sequence similarity analysis of phoR gene were adopted to determine the strain. Through single factor experiment,the influence of carbon source and nitrogen source on enzyme activity was investigated,and the optimal conditions of enzyme production were determined by orthogonal experiment. Results After the identification,the similarity of this strain and Bacillus amyloliquefaciens standard strain FZ42 was 99.78%. So,the strain was identified as Bacillus amyloliquefaciens. After optimizing,the producing enzyme activity increased by 3.63 times. Conclusions This study provides a theoretical basis for the further development of fibrinolytic drugs.

Key words: Fibrinolytic enzyme, Identification, Bacillus amyloliquefaciens, Optimization, Single factor experiment, Orthogonal experiment

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