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Nisin和山梨酸钾对酸奶中乳酸菌及杂菌的体外抑菌实验 被引量:2

The Antimicrobial Test of Nisin And Potassium toward LAB of Yogurt 、 Other Bacterium And Fungus
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摘要 本文采用稀释平板法,在pH6.0条件下,测定Nisin、山梨酸钾及二者复配后对酸奶中的乳酸菌、芽孢杆菌、大肠杆菌、金黄色葡萄球菌、沙门氏菌、酵母菌、霉菌的抑制作用.结果表明:培养相同时间,随着防腐剂浓度的升高,Nisin、山梨酸钾及二者复配对乳酸菌抑菌率上升;相同防腐浓度,随着培养时间的延长,Nisin、山梨酸钾及二者复配对乳酸菌抑菌率下降.Nisin对所试乳酸菌菌株具有一定的抑菌效果,而山梨酸钾在16h内具有一定的抑菌效果.Nisin、山梨酸钾二者复配抑菌效果明显优于单独使用,Nisin0.125g/kg、山梨酸钾0.5g/kg二者复配,16h、48h对乳酸菌的抑菌率分别为80.8%、46.7%.实验中的各个防腐浓度,Nisin、山梨酸钾单独或复配使用对芽孢杆菌等杂菌抑菌几乎无效果.
出处 《食品科技》 CAS 北大核心 2004年第z1期248-251,共4页 Food Science and Technology
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