| 6种乳酸菌降解胆固醇的体外试验 |
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| 引用本文： | 刘丽莉,董铁有,杨协立.6种乳酸菌降解胆固醇的体外试验[J].河南科技大学学报(自然科学版),2005,26(6):85-88. |
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| 作者姓名： | 刘丽莉 董铁有 杨协立 |
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| 作者单位： | 河南科技大学,食品与生物工程学院,河南,洛阳,471003;三门峡双洋商贸有限公司,河南,三门峡,472000 |
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| 基金项目： | 国家十五科技攻关资助项目（2001BA533C） |
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| 摘 要： | 分析了6种安全的乳酸菌菌种在不同条件下接种于体外高胆固醇的MRS-CHOL培养基中降解胆固醇的情况，以及培养液的pH值与胆固醇降解率的关系。结果表明，所用的6个菌种均可有效降解胆固醇，依次为Lp菌（28．088％）、3群菌（25．059％）、4群菌（24．922％）、Lf菌（24．554％）、Ld菌（22．248％）和5#菌（18．513％），降解率随接种量的增加和培养时间的延长而增加，除Lf菌外，其它菌株都随胆固醇浓度的变化而出现先升后降的趋势，培养液的pH值与胆固醇的降解率呈负相关性，且都不显著。
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| 关 键 词： | 微生物 乳酸菌 胆固醇 降解率 |
| 文章编号： | 1672-6871（2005）06-0085-04 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005年4月30日 |
Research on LAB Degrading Cholesterol |
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| LIU Li-Li,DONG Tie-You,YANG Xie-Li.Research on LAB Degrading Cholesterol[J].Journal of Henan University of Science & Technology:Natural Science,2005,26(6):85-88. |
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| Authors: | LIU Li-Li DONG Tie-You YANG Xie-Li |
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| Institution: | LIU Li-Li1,DONG Tie-You1,YANG Xie-Li2 |
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| Abstract: | In this study 6 types of safe lactic acid bacteria were inoculated with high MRS-CHOL culture,whose cholesterol-degrading abilities had been tested.The relation between pH value and rate of degrading of cholesterol were studied. The results indicate 6 strains have different rates of cholesterol-degrading: Lp(28.088%), 3#(25.059%), 4#(24.922%), Lf(24.554%), Ld(22.248%), and 5#(18.513%) respectively.The rate of cholesterol-degrading increased with incredsing quantity of inoculant;All the strains except Lf present the tendency of rising then falling with increasing the density of cholesterol.While there was a negative correlation between pH value and the rate of cholesterol-degrading, the correlation was not significant. |
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| Keywords: | Microorganisms Lactic acid bacteria Cholesterol Rate of degrading |
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