17717-720接729工艺技术4-10响应面法优化鼠李糖乳杆菌TUST006培养基的研究.pdf
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现代食品科技 Modern Food Science and Technology 2010, Vol.26, No.7
响应面法优化鼠李糖乳杆菌TUST006培养基的研究
马丽,刘会平,徐乙文,闫清泉
(天津科技大学食品工程与生物技术学院,天津 300457)
摘要:筛选并优化了鼠李糖乳杆菌TUST006发酵培养基。通过响应面分析方法确定培养基的主要影响因素和最佳浓度。
利用Design
Expert软件进行分析,确定对响应值影响显著的三个因素为乳糖、胰蛋白胨、牛肉膏。得到各因素的最佳水平值为乳糖3.17%
、胰蛋白胨4.22% 、牛肉膏2.08% ,活菌数达到2.94×1010 cfu/mL。通过此方法优化出的发酵培养基可为今后Lactobacillus
rhamnosus TUST006的培养和开发利用提供必要的理论基础。
关键词:鼠李糖乳杆菌TUST006;发酵培养基;响应面分析法
文章篇号:1673-9078(2010)7-717-720
Optimization of the Medium Composition for Production of
Lactobacillus rhamnosus TUST006 by Response Surface Methods
MA Li, LIU Hui-ping, XU Yi-wen, YAN Qing-quan
(College of Food Engineering and Biotechnology, Tianjin University of science and Technology,
Tianjin 300457, China)
Abstract: The composition of a medium for production of a probiotic bacteria, Lactobacillus rhamnosus was studied by response
surface methods. The results showed that lactose, tryptione and beef extract showed significante effects on the growth of Lactobacillus
rhamnosus. The best medium contained 3.17% lactose, 4.22% tryptone, and 2.08% beef extract, with which the viable bacteria reached
2.94×1010 cfu/mL. This medium can be used for culturing and exploiting of Lactobacillus rhamnosus TUST006.
Key words: Lactobacillus rhamnosusTUST006; fermentation medium; response surface methods
717
鼠李糖乳杆菌(Lactobacillus rhamnosus,
蛋白质33.4%、 物质7.9%、水分3.8%、脂肪0.
LGG)是从人体肠道中分离得到的一种益生菌
8% ;中性蛋白酶、乳糖、胰蛋白胨购于sigma公
,目前是全世界最受关注的益生菌之一。LGG
司(BR);牛肉膏:购于solarbio公司(BR)。
已被证实具有多种功能特性,如:具有调节肠
JA2003型光电分析天平;LRH-
道菌群、预防和治疗腹泻、排除毒素、提高机
250培养箱;高压干燥灭菌锅;电热鼓风干燥箱
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