学术
摘 要:
本文研究了鱼腥草中天然防腐剂的提取方法和抑菌作用,结果表明,用食用乙醇提取鱼腥草中防腐物质的最佳提取工艺参数为：固液比1∶15,提取温度80℃,提取时间为10h。鱼腥草醇提取物对实验用常见食品污染菌有较强的抑制作用,对大肠杆菌和枯草芽孢杆菌的最低抑菌浓度（MIC）为6.25mg/mL,对金黄色葡萄球菌为12.5mg/mL,对汉逊氏酵母菌为25mg/mL,对黑曲霉及青霉等均为50mg/mL,对金黄色葡萄球菌、大肠杆菌和枯草芽孢杆菌的抑菌活性pH范围均为47,对汉逊氏酵母菌为46。[著者文摘]
文章出处:
《中国食品添加剂》-2007年3期 -97-101页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1006-2513（2007）03-0097-05
Study on the method of extracting natural preservative in houttuynia cordata thunb, and its bacteriostasis
XU Yan （Hubei Light Industrial Technology Institute, Wuhan 430070）
Abstract:
The method of extracting natural preservative in Houttuynia cordata Thunb. and its bacteriostasis were studied. The results showed, that The optimal technical parameter of extracting natural preservatives from Houttuynia cordata Thunb. by edible alcohol are that ratio of solid to liquid is 1 ： 15, temperature of extract is 80℃： and time of extract is 10h. and that The alcohol extract of Houttuynia cordata Thunb. has strong inhibition effect on frequent pollution vaccine of laboratory food, the MIC is 6. 25mg/mL for Escheriehia coli and Bacillus subtilis, is 12. 5mg/mL for Staphloeoccus aureus, is 25mg/mL for Hansenula sp. , is 50mg/mL for Aspergillus sp. and Penicillium sp. , the range of active pH is 4 - 7 for Staphlocoecus aureus, Escherichia coli and Bacillus subtilis, is 4 - 6 for Hansenula sp.[著者文摘]
Key words:
houttuynia cordata thunb. ; natural preservatives; extract; baeteriostasis
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