摘要
目的:以犁头草、商陆、车前草、豆腐柴及箭叶淫羊藿5种天然植物及其不同部位提取物为研究对象,研究其抗氧化能力的差异,筛选出天然抗氧化资源及其有效部位。方法:采用甲醇超声提取各植物的不同部位,以清除DPPH自由基法分析各提取物清除自由基作用的强弱,从而评价各实验样品的抗氧化能力。结果:几种天然植物及其不同部位提取物均具有清除DPPH自由基的作用,具有较强的抗氧化能力,其中抗氧化作用最强的为豆腐柴;各提取物对DPPH自由基清除能力依次为豆腐柴(叶)>犁头草(叶)>车前草(叶)>车前草(根)>箭叶淫羊藿(地上部分)>商陆(叶)>商陆(根)>犁头草(根)。结果还表明,同种植物的叶比根的抗氧化能力强。结论:天然植物的抗氧化能力与不同植物品种及不同生长部位密切相关,且与提取物的用量呈正相关。
Objective：The antioxidant activities of extracts from different parts of Viola japonica Langsd.,Phytolacca acinosa Roxb,Plantagoasiatica L.,Premna microphylla Turcz.and Epimedium sagittatum were determined to screen natural antioxidant resources and effective parts.Methods：Different parts of these plants were extracted with methanol under the assistance of ultrasound wave treatment.The antioxidant activities of these plants were assayed by evaluating the scavenging effects on DPPH free radicals.Results：All the extracts from these plants had significant antioxidant activity.The strongest DPPH free radical scavenger was the extract from leaves of Premna microphylla Turcz.,followed by extracts from leaves of Viola japonica Langsd.,leaves of Plantagoasiatica L.,roots of Plantagoasiatica L.,leaves of Epimedium sagittatum,leaves of Phytolacca acinosa Roxb,roots of Phytolacca acinosa Roxb,and roots of Viola japonica Langsd..Conclusion：There is a close relationship between antioxidant activity and the type and part of these plants and the extracts from different parts of these plants shows an antioxidant effect positively dependent on dose.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第21期173-175,共3页
Food Science
基金
陕西省教育厅科学研究计划项目(09JK319)
安康学院科研资助项目(2007AKXY029
AYQDZR200801)
关键词
犁头草
商陆
豆腐柴
车前草
箭叶淫羊藿
抗氧化
Viola japonica Langsd.
Phytolacca acinosa Roxb
Premna microphylla Turcz.
Plantagoasiatica L.
Epimedium sagittatum
antioxidation
