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作 者 ：孟庆焕;王化;王洪政;吴薇薇;钟晨;祖元刚;*

期 刊 ：植物研究 2013年 33卷 4期 页码：504-507

关键词：牡丹种皮；黄酮；ABTS自由基；匀浆法；

Keywords:peony episperm, flavonoids, ABTS radical, homogenate extraction,

摘 要 ：以丹凤牡丹（Paeonia ostii）种皮为原料，采用正交实验法对影响牡丹种皮总黄酮匀浆提取含量的主要因素进行研究分析，考察了乙醇浓度、料液比、匀浆时间、匀浆次数4个因素的影响，筛选出最佳工艺条件，乙醇浓度80%，液料比20∶1，匀浆时间4 min，匀浆次数2次。并在最佳工艺条件下进行验证实验，得牡丹种皮黄酮提取物含量为52.19 mg·g^-1。测定了牡丹种皮黄酮对2,2-联氨-双（3-乙基苯并噻唑啉-6-磺酸）二胺盐(ABTS)自由基的清除效果，结果表明牡丹种皮黄酮的抗氧化能力强于2，6-二叔丁基-4-甲基苯酚(BHT)，为牡丹种皮变废为宝提供了科学依据。

Abstract:The optimum homogenate extraction technique of total flavonoids from Paeonia ostii episperm was studied by orthogonal test. The optimum extraction conditions were obtained as follows: 80% ethanol, ratio of solvent to material 20∶1, two times homogenate, and each 4 min. Under this conditions, the content of flavonoids in P.ostii episperm was 52.19 mg·g^-1. ABTS radical scavenging experiment showed that flavonoids from P.ostii episperm had significant effects, which was higher than BHT, but less than VC. In addition, we have realized the practical process of making waste into useful material.

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