乳杆菌在发酵乳饮料中的应用

为了制备更优质的乳酸菌饮料,本论文主要以鼠李糖乳杆菌、瑞士乳杆菌、副干酪乳杆菌、嗜酸乳杆菌四种典型的乳酸杆菌为研究菌种,详细分析它们在乳品发酵过程中pH、酸度变化,货架期内的活菌数变化以及代谢产生的有机酸种类和耐胃酸的能力,以确定乳杆菌在乳饮料中应用的最优条件,分析其应用于乳饮料中的可行性。本文为乳杆菌在乳饮料中的应用提供了参考依据。

Application of Lactobacillus in fermented milk beverage

In order to prepare better Lactobacillus beverage,four typical Lactobacillus strains Lactobacillus rhamnosus,Lactobacillus helveticus,Lactobacillus paracasei and Lactobacillus acidophilus used in dairy fermentation process were investigated.The changes of pH,titration acidity and the number of living bacterium during shelf period,the production of organic acids and the tolerance to gastric acid were determined,and the fermentation conditions of Lactobacillus were optimized.Then the feasibility of its application in milk beverage was analyzed.These results would provide a reference for developing Lactobacillus milk beverage.