摘要
益生菌随着传代的进行,菌株的产酸能力、耐胆盐能力、耐酸能力和抗氧化能力产生变化。冷冻干燥是菌株常用的保藏方法,对菌体转录水平影响较大,能够临时改变菌株的多种特性。文章以植物乳杆菌M547、M621、M748、戊糖乳杆菌M750为研究对象,探究冷冻干燥对菌株传代稳定性的影响。结果表明,冷冻干燥影响菌株的耐胆盐稳定性,对产酸能力、耐酸能力、抗氧化能力无显著影响。
With the passage of probiotics,the acid production capacity,bile salt resistance,acid resistance and antioxidant capacity of the strain change.Freeze-drying is a common preservation method for probiotics,which has a great impact on the transcription and can temporarily change the characteristics of the strain.In this study,Lactobacillus plantarum M547,M621,M748 and Lactobacillus pentosus M750 were used to explore the effect of freeze-drying on the stability of the strains in passage.The results showed that freeze drying affected the stability of bile salt tolerance,but had no obvious effect on acid production capacity,acid resistance and antioxidant capacity.
作者
徐凡
张臣臣
黄玉军
康文丽
潘丽娜
汪家琦
李威
XU Fan;ZHANG Chenchen;HUANG Yujun;KANG Wenli;PAN Lina;WANG Jiaqi;LI Wei(Jiangsu Key Laboratory of Dairy Biotechnology and Safety Control(Yangzhou University),Yangzhou 225127,China;College of Food Science and Engineering,Yangzhou University,Yangzhou 225127,China;Ausnutria Dairy Co.Ltd.,Changsha 410017,China;Hunan Engineering Research Center of Human Microecological Products,Changsha 410017,China)
出处
《中国乳品工业》
CAS
北大核心
2024年第5期5-10,共6页
China Dairy Industry
基金
国家自然科学基金(32272333)
湖南省长沙市望城区科技计划重点研发计划项目(K221012)
扬州市-扬州大学市校合作共建科技创新平台(YZ2020265)
扬州大学“青蓝工程”。
关键词
益生菌
稳定性
冷冻干燥
耐胆盐能力
耐酸能力
probiotics
stability
freeze-drying
bile salt resistance
acid resistance
作者简介
徐凡(1999-),男,硕士研究生,研究方向为食品微生物。E-mail:1064680915@qq.com;通讯作者:黄玉军(1972-),男,博士,教授,研究方向为乳品科学。E-mail:yjhuang@yzu.edu.cn。
