范文编号:SP127 范文字数:10648,页数:32 摘要: 本文对从民间收集来的民、蒙两种混合菌种进行了分离筛选,采用球菌、杆菌培养基分离获得6株单菌。对单菌的发酵性能实验也进行了进一步研究。由于民,蒙混合菌种的风味尚好,但发酵时间比较长,所以对民,蒙两种混合菌种进行了激活剂筛选,以期使两种发酵剂的发酵周期缩短,并具有更好的凝乳效果。实验结果表明,土豆汁与番茄汁对于两种混合菌种不论在发酵速度和凝乳效果上,均有较大的改善效果。 关键词: 乳酸菌;分离;纯化;发酵;激活剂 Abstract :The fermentation properties and bioactive function of 2 new Lacto bacteria which were isolated from rural yogurt have been studied in this article. 6 strains have been obtained from the collected rural yogurt by using agar plate with special isolation medium of lactic acid bacteria. To research deeply we tested the six bacteriums fermentation performance. Because of the long fermentation period of the Min and Meng, screened reactivater of the two for decurtating the fermentation period and improving the fermentation rate and the quality of the texture .The result of the experiment indicated that the fermentation rate and the quality of the texture were improved when potato juice and tomato juicewas added during the milk fermentation. Key Words: Latic acid bacteria;Isolation;Depuration ;Reactivator ;Fermentation 目 录
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