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| 二株嗜热链球菌益生特性的体外研究 | |
| 引用本文： | 张卓丹,张铁华,李达,王辑,罗翔丹,杨贞耐.二株嗜热链球菌益生特性的体外研究[J].中国乳品工业,2011,39(7). |
| 作者姓名： | 张卓丹 张铁华 李达 王辑 罗翔丹 杨贞耐 |
| 作者单位： | 1. 吉林大学军需科技学院,长春,130062 2. 中国农业科技东北创新中心农产品加工研究中心,长春,130033 3. 吉林农业大学食品科学与工程学院,长春,130118 4. 吉林大学军需科技学院,长春130062;中国农业科技东北创新中心农产品加工研究中心,长春130033 |
| 基金项目： | 现代农业产业技术体系建设专项资金资助(nycytx-0502); 吉林省科技发展计划项目(20090225); 吉林大学博士基金(20080027) |
| 摘 要： | 对嗜热链球菌ST1和嗜热链球菌KS1的部分益生性及功能特性进行了研究。考察了ST1和KS1对酸和胆盐的耐受性,结果表明,ST1和KS1在pH值为3.0条件下培养3h的存活率分别为67.17%和67.49%,在pH值为4.0或质量分数为0.3%胆盐环境中仍可以生长,表现出较高的存活力。通过抑菌实验表明ST1和KS1可以抑制常见的致病菌金黄色葡萄球菌、大肠杆菌、鼠伤寒沙门氏菌和福氏志贺氏菌。在对抗生素敏感实验中,ST1对其中的3种抗生素有耐药性,而KS1对6种抗生素有耐药性。研究还发现ST1和KS1还具有较高的降胆固醇的能力,胆固醇的去除率分别为65.14%和74.49%。 |
| 关 键 词： | 益生菌 耐受性 抑菌性 耐药性 降胆固醇 |
In Vitro study of two Streptococcus thermophilus strains as potential probiotics |
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| ZHANG Zhuo-dan,ZHANG Tie-hua,LI Da,WANG Ji,LUO Xiang-dan,YANG Zhen-nai.In Vitro study of two Streptococcus thermophilus strains as potential probiotics[J].China Dairy Industry,2011,39(7). | |
| Authors: | ZHANG Zhuo-dan ZHANG Tie-hua LI Da WANG Ji LUO Xiang-dan YANG Zhen-nai |
| Affiliation: | ZHANG Zhuo-dan1,ZHANG Tie-hua1,LI Da2,WANG Ji2,LUO Xiang-dan1,YANG Zhen-nai1,2(1 College of Light Industry and Economics & Management,Jilin University,Changchun 130062,China,2 Center of Agro-food Technology,Northeast Agricultural Research Center of China,Changchun 130033,3 College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China) |
| Abstract: | Aimed of this study were to investigate some probiotic properties and functional properties of Streptococcus thermophilus ST1(ST1) and Streptococcus thermophilus KS1(KS1).The tolerances of ST1 and KS1 strains to low pH and 0.3% bile salt were studied.Results showed that:After the incubation at pH 3.0 for 3h,ST1 and KS1 could survive as a rate of 67.17%-67.49%.Strains were able to grown in pH 4.0 or 0.3% bile salt showed high viability.In antimicrobial activity assays,strains ST1 and KS1 showed inhibitory pr... |
| Keywords: | probiotics tolerance antibacterial activity antimicrobial susceptibility cholesterol-reducing |
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