阔叶箬竹叶提取物清除自由基能力及抑菌效果的比较研究  

Comparison of scavenging DPPH free radical and restraining bacteria of indocalamus latifolius leaf's extracts

作　　者：李水芳[1] 戴瑜[1] 李姣娟[1] 

机构地区：[1]中南林业科技大学理学院,长沙410004

出　　处：《食品科技》2010年第4期174-177,共4页Food Science and Technology

基　　金：中南林业科技大学青年基金项目(07013B);湖南省教育厅科学研究项目(06C883)

摘　　要：为确定贮藏时间对箬叶清除自由基能力和抑菌效果的影响,对4个不同贮藏年份的阔叶箬竹叶水提取液和85%乙醇提取液清除DPPH·的能力以及抑制大肠杆菌和金黄色葡萄球菌的效果进行了比较研究。结果表明,贮藏2、3年和4年后,水提取液对DPPH·的清除率分别下降了22.4%、26.4%和32.9%,醇提取液对DPPH·的清除率分别下降了15.2%、23.6%和33.8%;水提取液抑制大肠杆菌的能力分别降低了20.7%、30.5%和43.1%,醇提取液抑制大肠杆菌的能力分别降低了18.0%、27.5%和40.1%;水提取液抑制金黄色葡萄球菌的能力分别降低了20.0%、31.5%和41.8%,醇提取液抑制金黄色葡萄球菌的能力分别降低了17.3%、27.5%和40.1%。醇提取液清除DPPH·的能力和抑菌效果都优于水提取液。In order to decide the influence of storage period on scavenging free radical and restraining bacteria,scavenging DPPH· and restraining bacteria of Indocalamus latifolius leaf＇s water extracts and 85% ethanol extracts were tested.The results showed that after storing 2,3,4 years respectirely,scavenging DPPH· rate of water extracts decreased respectirely 22.4%,26.4% and 32.9%,scavenging DPPH· rate of ethanol extracts decreased respectirely 15.2%,23.6% and 33.8%;The capacity of restraining escherichia coli of water extracts decreased respectirely 20.7%,30.5% and 43.1%;The capacity of restraining escherichia coli of ethanol extracts decreased respectirely 18.0%,27.5% and 40.1%;The capacity of restraining staphylococcus aureus of water extracts decreased respectirely 20.0%,31.5% and 41.8% ;The capacity of restraining staphylococcus aureus of ethanol extracts decreased respectirely 17.3%,27.5% and 40.1%.For scavenging DPPH·and restraining bacteria,ethanol extracts were better than water ethanol extracts.

关 键 词：阔叶箬竹叶 水提取物 醇提取物 二苯基苦基肼自由基 抑菌 

分 类 号：TS202.3[轻工技术与工程—食品科学]