南五味子提取物对食品常见致病菌抑制作用的研究
The Food Industry(2011)
Abstract
探讨南五味子提取物对食品常见致病菌的抑制作用。采用乙醚、70%乙醇和水3种提取剂对南五味子进行提取,以大肠杆菌(Escherichia coli)、金黄色葡萄球菌(Staphylococcus aureus)和乙型副伤寒沙门氏菌(Salmonella paratyphi B)为供试菌种,通过琼脂平板扩散法测定抑菌圈;琼脂平板二倍稀释法测定最低抑菌浓度(MIC,g/mL)。3种提取物的抑菌效果大小为:70%乙醇提取物>水提取物>乙醚提取物。70%乙醇提取物抑菌效果最好,对大肠杆菌、金黄色葡萄球菌和沙门氏菌的抑菌圈分别达到26.4,25.2,23.3 mm,MIC分别为0.0125,0.0125,0.025 g/mL。南五味子提取物对食品常见致病菌的抑制作用显著,可开发成安全有效的天然食品防腐剂。
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Key words
antimicrobial activity,food pathogenic microbe,extraction,Kadsura longipedunculata Finet et Gagnep
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