农产品加工·学刊（中）
農產品加工·學刊（中）
농산품가공·학간（중）
AEM RODUCTS ROCESSING
2013年
8期
34-37
,共4页
张书弦%杜海珍%陈旭斌%李远志%洪雁%张晓
張書絃%杜海珍%陳旭斌%李遠誌%洪雁%張曉
장서현%두해진%진욱빈%리원지%홍안%장효
荷叶%黄酮%提取%抗氧化
荷葉%黃酮%提取%抗氧化
하협%황동%제취%항양화
lotus leaves%flavones%extraction%antioxidant activity
为提高荷叶利用价值，采用响应面分析法优化荷叶黄酮提取的工艺条件，并以DPPH法和羟基自由基法对其黄酮提取物的抗氧化性进行研究。结果表明，以干燥的荷叶为样品，体积分数60%的乙醇溶液为提取剂，料液比为1∶85，80℃水浴回流提取为提取条件，得到黄酮提取量最高为4.01 mg/g。荷叶黄酮的抗氧化能力较强，且对DPPH自由基的清除率大于对羟基自由基的清除率。
為提高荷葉利用價值，採用響應麵分析法優化荷葉黃酮提取的工藝條件，併以DPPH法和羥基自由基法對其黃酮提取物的抗氧化性進行研究。結果錶明，以榦燥的荷葉為樣品，體積分數60%的乙醇溶液為提取劑，料液比為1∶85，80℃水浴迴流提取為提取條件，得到黃酮提取量最高為4.01 mg/g。荷葉黃酮的抗氧化能力較彊，且對DPPH自由基的清除率大于對羥基自由基的清除率。
위제고하협이용개치，채용향응면분석법우화하협황동제취적공예조건，병이DPPH법화간기자유기법대기황동제취물적항양화성진행연구。결과표명，이간조적하협위양품，체적분수60%적을순용액위제취제，료액비위1∶85，80℃수욕회류제취위제취조건，득도황동제취량최고위4.01 mg/g。하협황동적항양화능력교강，차대DPPH자유기적청제솔대우대간기자유기적청제솔。
In order to improve the added value of lotus leaves processing, the extraction process of flavones from lotus leaves is optimized by response surface methodology. Along with this, the antioxidant activity of the extract is evaluated by DPPH· and the ·OH scavenging assays. The optimal extraction parameters are determined as follows: the dry lotus leaf as the sample, extraction solvent 60% ethanol; material/liquid ratio 1∶85; reflux temperature 80 ℃. The extraction rate of flavones from lotus leaves is 4.01 mg/g under these optimal extraction conditions. The flavones extract of lotus leaves exhibits strong antioxidant activity. It exhibits stronger DPPH· scavenging capacity than the ·OH.
