食品科学 ›› 2009, Vol. 30 ›› Issue (13 ): 187-191.doi: 10.7506/spkx1002-6630-200913044

• 生物工程 • 上一篇    下一篇

嗜酸乳杆菌N X 2 - 6 液体发酵产细菌素培养基及其主要影响因子筛选

乌云达来1 , 2,陆兆新1 ,* ,吕凤霞1,别小妹1,孙会刚1,卢亚萍1,查干其劳1   

  1. 1.南京农业大学食品科学技术学院 2. 内蒙古农业大学食品科学与工程学院
  • 收稿日期:2009-03-27 出版日期:2009-07-01 发布日期:2010-12-29
  • 通讯作者: 陆兆新1 ,* E-mail:fmb@njau.edu.cn
  • 基金资助:

    国家“863”计划项目(2007AA10Z357)

Screening of Medium Components and Main Fermentation Conditions of Lactobacillus acidophilus NX2-6 for Bactericin Production

Wuyundalai1,2,LU Zhao-xin1,*,LU Feng-xia1,BIE Xiao-mei1,SUN Hui-gang1,LU Ya-ping1,Chaganqilao1   

  1. 1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
    2. College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2009-03-27 Online:2009-07-01 Published:2010-12-29
  • Contact: LU Zhao-xin1,*, E-mail:fmb@njau.edu.cn

摘要:

筛选嗜酸乳杆菌NX2-6 产生细菌素发酵条件的主要影响因素。在确定MRS 培养基为菌株NX2-6 产细菌素最适培养基的基础上,利用Plackett-Burman 试验设计,对影响细菌素产量的内在因素(蛋白胨、牛肉浸膏、酵母浸出粉、葡萄糖、吐温80、乙酸钠、K2HPO4·3H2O、MgSO4·7H2O、MnSO4·H2O、C6H5Na3O7·H2O及起始pH 值)和外在因素(接种量、培养温度及培养时间)进行筛选。结果表明:葡萄糖(p = 0.0006)、乙酸钠(p =0.0002)、柠檬酸三钠水合物(p < 0.0001)和培养时间(p = 0.0002)对细菌素产生具有显著影响。

关键词: 嗜酸乳杆菌, 细菌素, 发酵条件, 影响因子, 筛选

Abstract:

Bactericin produced by the fermentation of L. acidophilus has a broad antibacterial spectrum. In order to obtain the bactericin having high antibacterial activity (against E. coli), a Plackett-Burman design was conducted to screen the components of the optimal one among 11 media and the fermentation conditions that significantly affect the bactericin production by L. acidophilus NX2-6. The results showed that MRS was the optimal medium, because the bactericin produced in this medium had the largest diameter of inhibition zone. Glucose (p = 0.0006), sodium acetate (p = 0.0002), C6H5Na3O7·H2O (p < 0.0001) and culture time (p=0.0002) were the significant factors affecting the bacteriocin production by L. acidophilus NX2-6.

Key words: L. acidophilus, bacteriocin, fermentation conditions, affecting factor, screening

中图分类号: