食品科学 ›› 2007, Vol. 28 ›› Issue (3): 171-174.

• 生物工程 • 上一篇    下一篇

高产胞外多糖(EPS)乳酸菌菌株的筛选与鉴定

 潘道东, 吴玲   

  1. 南京师范大学金陵女子学院食品科学系; 南京师范大学金陵女子学院食品科学系 江苏南京210097; 江苏南京210097;
  • 出版日期:2007-03-15 发布日期:2011-12-31

Isolation and Indentification of Lactic Acid Bacteria Strains with Higher Yield of Exopolysaccharide

 PAN  Dao-Dong, WU  Ling   

  1. Department of Food Science, Jinling Womens’ College, Nanjing Normal University, Nanjing 210097, China
  • Online:2007-03-15 Published:2011-12-31

摘要: 本研究对收集的3个混合发酵剂进行了分离、筛选,并通过测定其pH值、粘度和EPS产量,从中筛选出了两株高产EPS的乳酸菌。利用API细菌鉴定系统对这两株高产EPS乳酸菌的属性进行了鉴定,分别为乳酸乳球菌乳亚种和片球菌。

关键词: 胞外多糖, 乳酸菌

Abstract: Sixteen strains of lactic acid bacteria have been isolated and purified from the mixed starter, and the OD value and colonies measured after 12 hours liquid culture at 40℃. The pH, viscosity coefficient and content of exopolysaccharide of yogurt made from these lactic acid bacteria strains were assayed. Two strains of lactic acid bacteria of the highest yield of exopolysaccharide are screened. They are identified by API bacterial identification system as Lactococcus lactis subsp. Lactis and Pediococcus.

Key words: exopolysaccharide (EPS), lactic acid bacteria (LAB)