【摘要】 将槟榔籽干燥、粉碎后用75%乙醇提取,以该提取液为研究对象,分析其对DPPH、羟基自由基、超氧根离子自由基、ABTS自由基的清除能力,并测试其还原力、对二价铁离子的络合能力和对亚油酸自氧化的抑制能力,综合分析其体外抗氧化能力。结果表明,槟榔籽乙醇提取物(AKEE)对DPPH自由基、羟基自由基、超氧根离子自由基的清除能力均强于BHT,均高于常用抗氧化剂BHT。同时,AKEE还表现出较高的还原力,并能有效延缓亚油酸自氧化反应的速率。这表明槟榔籽乙醇提取物具有较好的抗氧化性,在食品或其它工业中有潜在的用途。更多还原

【Abstract】 The areca kernel was dried,corssed and then extracted by 75 % ethanol aqueous. The antioxidant activity of the extraction from areca kernel by 75 % ethanol(AKEE)was studied through testing its scavenging activity on DPPH radical,hydroxyl radical,ABTS and superoxide radical. Besides,its reducing power,chelating capacity and inhibition of linoleic acid autoxidation were researched,too. Moreover,the polyphone composition of this extraction was also analyzed by RP-HPLC. Compared with BHT,the AKEE exhibited higher scavenging activity on DPPH·,·OH and O2-·,and showed higher reducing power. Results also showed that AKEE could effectively inhibit the autoxidation of linoleic acid. This meant that AKEE was a good nature antioxidant and had potential application in food or other industry.更多还原