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番石榴叶提取物的抗氧化性研究 被引量:4

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摘要 探讨不同温度及不同溶剂番石榴叶提取物的总酚、总溶出物含量和抗氧化性及三者之间的关系。采用水、乙醇溶液、丙酮溶液分别在40℃、50℃、60℃下提取,以DPPH自由基比色法测定各提取物的抗氧化性,并与天然抗氧化剂抗坏血酸比较。丙酮提取物得率最高,其提取物中多酚总量为517mg/gGAE,溶出物总量为15.7%,浓度为1.5mg/mL,其DPPH自由基清除率为相同浓度抗坏血酸的93%。进一步通过HPLC分析比较三种提取物的乙酸乙酯层的图谱,发现三种提取物的所含成分相似。推断出番石榴叶提取物起抗氧化性作用可能除了酚类物质,还有别的物质。
出处 《江苏食品与发酵》 2006年第3期1-5,共5页 Jiangsu Food and Fermentation
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