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Position: Home > Articles > Effects of Different Temperatures and pH on the Growth of Lactic Acid Bacteria Xinjiang Agricultural Sciences 2006,43 (6) 533-538

不同温度及pH条件对乳酸菌生长影响的研究

作  者:
熊素玉;姚新奎;谭小海;刘珩;张积荣;曾波;许鹏;熊伟;吴津蓉
单  位:
新疆呼图壁县畜牧局;天津顶益国际食品有限公司;新疆特丰药业股份有限公司;新疆伊犁昭苏马场;新疆农业大学动物科学学院
关键词:
酸马奶;乳酸菌;温度;pH
摘  要:
实验用改良MC培养基为载体,通过目测菌液浑浊度,测定菌液OD600值和培养终点时pH值,对从酸马奶中分离出的乳酸菌的生长温度及pH值进行了研究。结果表明,在不加缓冲液的培养基中,在pH 6.5~8.5、40℃培养时,所有菌株生长良好,且发酵葡萄糖和乳糖产生乳酸,降低环境的酸度。当环境条件超出这一范围时,乳酸菌生长受到抑制。从OD600值看出,实验分离到的24株菌最适pH都在6.5左右,最适生长温度在40℃左右,但pH值与温度的范围在各菌株间略有差异。
译  名:
Effects of Different Temperatures and pH on the Growth of Lactic Acid Bacteria
作  者:
XIONG Su-yu~1,YAO Xin-kui~1,TAN Xiao-hai~2,LIU Heng~1,ZHANG Ji-rong~1,ZENG Bo ~1,XU Peng~3,XIONG Wei~4,WU Jin-rong~5(1.College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China;2.Xinjiang Ili Stud,Zhaosu 835000,China;3.Animal Husbandry Bureau,Hutubi County of Xinjiang,Hutubi 831200,China;4.Tianjin Tingyi International Food Co.Ltd,Tianjin 300457,China;5.Xinjiang Tefeng Pharmacopediture.,Ltd,Urumqi 830000,China)
关键词:
koumiss;lactic acid bacteria(LAB);temperature;pH
摘  要:
This experiment is designed to analyze the effects of different temperatures and pH on lactic acid bacteria(LAB) isolated from koumiss by improved MC culture.The OD_(600),pH and vaccine opacity of the culture at terminal were measured.The results of this experiment are summarized as follows:the LAB can massively grow in 40 ℃ and pH 6.5~8.5 in non-buffer culture,produce the lactic acids and lower the acidity of the environment.The LAB growth is inhibited beyond the range.The pH 6.5 and 40 ℃ are the most suitable condition to these 24 strains,but every strain performs different scope.

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