新疆农业科学2012，Vol.49Issue(8)：1531-1539,9.DOI:10.6048/j.issn.1001-4330.2012.08.025
新疆酸马奶中嗜酸乳杆菌的发酵特性研究
Study on the Fermentable Properties of Lb. acidophilus Isolated from Traditional Koumiss of Xinjiang
摘要
Abstract
[ Objective ] Some fermentable properties of the three strains of Lb. acidophilus isolated from the collected samples of traditional koumiss in Xinjiang and the yogurt sold in the city were studied in order to find the excellent fermentation characteristics of lactobacillus acidophilus bacteria. [Method] Lb. acidophilus was activated by the MRS medium and live bacteria number of Lb. lactobacillus in the yogurt was determined with the flat colonies test. Meanwhile pH plan and NaOH standard were used to titrate solution acidity of the yogurt during the fermentation process and the cold storage. [Result] After fermentation 24 h, Lb. acidophilus of G14, S22 and G13 arrive at the end of the fermentation, the sequence of which is G14 > S22 > G13. Lb. acidophilus of G14 has a higher ability of acidity production. In the 24 hours, the acidity of yogurt was 94.83 °T, and the pH was 4. 30. During the fermentation at 4℃, lactobacillus acidophilus of yoghurt G14 and S22 after acidification was lower than that of the G13. On the 16 days of refrigeration, all the strains still have high logarithmic survival ability. The logarithmic survival rate of G13, S22 and G14 are 79. 18% , 80. 12% and 85.57% , respectively. Their sequence is G14 > S22 > G13. [ Conclusion] The test of G14 had a higher ability of acidity production, being the first one to reach the end of fermentation. During the refrigeration, post acidification of lactobacillus acidophilus of yoghurt G14 and S22 arrive at the low level and G14 has a higher ability of livability.关键词
嗜酸乳杆菌/发酵乳/存活率Key words
Lb. acidophilus/ yogurt/ livability分类
农业科技引用本文复制引用
董婷,曾亚琦,刘婷婷,曹丽萍,李海英,姚新奎,韩煜茹,唐血梅,车驰,孟军,祝春梅,李智军..新疆酸马奶中嗜酸乳杆菌的发酵特性研究[J].新疆农业科学,2012,49(8):1531-1539,9.基金项目
国家农业部公益性行业科研专项"马驴产业技术研究与试验示范项目"(201003075) （201003075）
新疆维吾尔自治区科技重大专项"马(运动、肉用、乳用)生产关键技术研究与示范"(201130101) （运动、肉用、乳用）
