共轭亚油酸高产菌株的筛选及培养条件的优化  

Screening of CLA-Producing Strains and Optimization of the Incubation Conditions

作　　者：寇秀颖[1] 黄东东[1] 王三永[1] 李春荣[1] 

机构地区：[1]广东省食品工业研究所,广东省食品工业公共实验室,广州510308

出　　处：《乳业科学与技术》2006年第6期269-271,共3页JOURNAL OF DAIRY SCIENCE AND TECHNOLOGY

基　　金：国家教委跨世纪人才基金资助项目

摘　　要：共轭亚油酸是天然存在于食品中的亚油酸异构体,具有多种生理活性。本实验测试了发酵乳制品生产中常用菌株的共轭亚油酸产生能力,其中德氏乳杆菌保加利亚亚种(Lactobacillus.delbrueckiisubsp.bulgaricus)Ldb2显示了最高的共轭亚油酸生产能力,其共轭亚油酸产量为4.06μg/mL。并且对高产菌株产共轭亚油酸的培养条件进行优化,确定菌株产共轭亚油酸的最佳发酵条件是:培养温度47℃,培养时间24h,pH值8.0。Conjugated Linoleic Acid （CLA）is naturally occurred isomers of Linoleic Acid, which possess many physiological benefits. This paper tests CLA-producing ability of different strains, which are used by fermented milk products, and Laetobacillus. delbrueckii subsp.bulgaricus Ldb2 showed the highest CLA-producing ability and CLA level was 4.06μg/mL. The fermentation conditions were optimized as follows： reaction temperature 47℃, pH8.0, and incubation time 24 hours.

关 键 词：共轭亚油酸 乳酸菌株 筛选 培养条件 

分 类 号：TS201[轻工技术与工程—食品科学]