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产亚油酸异构酶的乳酸菌的筛选

李妍 魏霜 白卫滨 吴希阳

食品工业科技2013,Vol.34Issue(15):180-183,189,5.
食品工业科技2013,Vol.34Issue(15):180-183,189,5.

产亚油酸异构酶的乳酸菌的筛选

Screening of the lactobacillus producing linoleic acid isomerase

李妍 1魏霜 1白卫滨 1吴希阳1

作者信息

  • 1. 食品科学与工程系,暨南大学理工学院,广东广州510632
  • 折叠

摘要

Abstract

The ability of linoleic acid isomerase(LAI) formation by 16 Lactobacillus strains was studied.Conjugated linoleic acid(CLA)in fermentation broth from the 16 strains was determined by UV spectrophotometry and gas chromatography.The putative LAI genes from the strains were PCR amplified and sequenced.The results indicated that the CLA production of 9 Lactobacillus strains were determined by UV spectrophotometry.Fermentation broth of 6 Lactobacillus strains contained the cis-9,trans-11CLA (50% of total CLA) and trans-9,trans-11 CLA (50% of total CLA) detected by gas chromatography.Myosin-cross-reactive antigen (MCRA) gene,which were closely associated with LAI,were successfully amplified and sequenced from Lactobacillus rhamnosus(ATCC 9595).

关键词

共轭亚油酸/乳酸菌/亚油酸异构酶

Key words

conjugated linoleic acid /lactic acid bacteria/linoleic acid isomerase

分类

轻工纺织

引用本文复制引用

李妍,魏霜,白卫滨,吴希阳..产亚油酸异构酶的乳酸菌的筛选[J].食品工业科技,2013,34(15):180-183,189,5.

基金项目

国家863计划项目(2011AA100901). (2011AA100901)

食品工业科技

OA北大核心CSCDCSTPCD

1002-0306

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