文献类型：期刊文献

中文题名：非厌氧下HJ9211冻干双歧杆菌的存活特性

英文题名：Survival Property of Freeze dried Bifidobacterium HJ9211 in Non anaerobic Condition

作者：张明[1];苏丽明[1];马天良[1];洪定如[1];谢幸珠[1]

机构：[1]华东理工大学国家生化工程技术研究中心

年份：1999

卷号：25

期号：1

起止页码：36

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：双歧杆菌;菌体失活;冻干活菌;存活特性;HJ9211

外文关键词：bifidobacterium; death of viable microorganism; freeze drying viable microorganism; accelerate speed of prediction

摘要：：研究了非厌氧条件下ＨＪ９２１１冻干双歧杆菌在不同温度下的存活特性，并对其存活期进行了加速预测及验证，同时对不同浓度ＨＪ９２１１冻干粉在不同ｐＨ的人工胃液中的存活情况进行了研究。结果表明：（１）存活期的预测数据与实测验证数据吻合；（２）在非厌氧情况下，ＨＪ９２１１冻干粉的存活性受温度影响较大，失活系数Ｋ４℃＝０．００００１８，Ｋ３７℃＝０．０３０６，Ｋ４５℃＝０．２０７，Ｋ５５℃＝０．９９７；（３）人工胃液对其存活有一定影响，尤其在低ｐＨ值时影响更大，存活率为１０％（ｐＨ＝２～３）和０．０１％（ｐＨ＝１），当活菌浓度较低时这一现象更为显著，分别为１％和０．０１％。
In non anaerobic condition, the survival property of freeze dried bifidobacterium HJ9211 in different temperaturs were studied, and its survival time was accelerated speed of prediction and verified. In artificial gastric liquid of different pH, the survival property of freeze dried bifidobacterium HJ9211 in different concentration is investigated. It is shown that, ① the accelerate speed of prediction result was re conciled with the experimental value; ②in non anaerobic condition, its inactive constants ( K t ) in different temperature are 0.000 018(4℃), 0.030 6(37℃),0.207(45℃) and 0.997(55℃) respectively; ③ in artificial gastric liquids of different pH, its survival viabilities are 10 -1 ～10 -2 (pH=2～3) and 10 -4 (pH=1),respectively.