甘南牧区酸奶中乳酸菌的分离与发酵性能研究

doi:10.7506/spkx1002-6630-200903046

食品科学 ›› 2009, Vol. 30 ›› Issue (3): 204-208.doi: 10.7506/spkx1002-6630-200903046

甘南牧区酸奶中乳酸菌的分离与发酵性能研究

甘伯中，杜宁娟，李帆，妥彦峰，王亚龙，刘军伟

甘肃农业大学食品科学与工程学院

收稿日期:2008-01-21 修回日期:2008-10-01 出版日期:2009-02-01 发布日期:2010-12-29
通讯作者: 甘伯中 E-mail:ganbz@126.com

Isolation of Lactobacilli from Self-made Yoghourt by Herdsmen in Gannan Pasturing Area and Study on Their Fermentation Performances

GAN Bo-zhong，DU Ning-juan，LI Fan，TUO Yan-feng，WANG Ya-long，LIU Jun-wei

(College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China)

Received:2008-01-21 Revised:2008-10-01 Online:2009-02-01 Published:2010-12-29
Contact: GAN Bo-zhong E-mail:ganbz@126.com

摘要/Abstract

摘要：

从甘南牧区牧民家中采集自然发酵的酸奶，用选择性培养基分离出12 株乳酸菌菌株，通过传代培养，筛选出A、B、C、D、E5 株优良乳酸菌菌株，经初步鉴定，其中4 株为球菌，1 株为杆菌。对这5 株菌进行发酵性能测定，并对其发酵生产的酸奶进行感官评价。结果表明，这5 株菌作为发酵剂生产酸奶的感官性能优良，其中最适合单菌株发酵的是杆菌C 和球菌A。

关键词: 牧区酸奶, 乳酸菌, 分离, 发酵性能

Abstract:

Twelve strains of Lactobacilli were isolated with selective culture medium from self-made yoghurt by herdsman in Gannan pasturing area. Through inoculation and culture, 5 strains of A, B, C, D and E with special flavor, good texture and stable inheritable character were screened out, among which, four were cocci and one was bacillus. Then their fermentation performances were studied and sensory evaluation of their fermented yoghurt was conducted. The results revealed that the quality of yoghurt fermented by these five strains of Lactobacilli is excellent, especially Bacillis C and Coccus A are mostly suitable for singlefermentation.

Key words: self-made yoghurt in pasturing area, lactic acid bacteria, isolation, fermentation performance

中图分类号:

TS252.54

甘伯中，杜宁娟，李帆，妥彦峰，王亚龙，刘军伟. 甘南牧区酸奶中乳酸菌的分离与发酵性能研究[J]. 食品科学, 2009, 30(3): 204-208.

GAN Bo-zhong，DU Ning-juan，LI Fan，TUO Yan-feng，WANG Ya-long，LIU Jun-wei. Isolation of Lactobacilli from Self-made Yoghourt by Herdsmen in Gannan Pasturing Area and Study on Their Fermentation Performances[J]. FOOD SCIENCE, 2009, 30(3): 204-208.

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甘南牧区酸奶中乳酸菌的分离与发酵性能研究

Isolation of Lactobacilli from Self-made Yoghourt by Herdsmen in Gannan Pasturing Area and Study on Their Fermentation Performances

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