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园艺学报 ›› 2009, Vol. 36 ›› Issue (11): 1685-1690.

• 研究报告 • 上一篇    下一篇

牡丹花发育过程中花瓣抗氧化活性的变化

史国安1,2;郭香凤1;高双成1;范丙友1;包满珠2*   

  1. (1河南科技大学农学院, 洛阳市牡丹生物学重点实验室, 河南洛阳471003; 2华中农业大学园艺林学学院, 园艺植物生物学教育部重点实验室, 武汉430070)
  • 收稿日期:2009-05-13 修回日期:2009-08-31 出版日期:2009-11-25 发布日期:2009-11-25
  • 通讯作者: 包满珠

Changes of Antioxidative Activity During Florescence and Flower Senescenceof Peonies Petal

SHI Guo-an1,2;GUO Xiang-feng1;GAO Shuang-cheng1; FAN Bing-you1;BAO Man-zhu2*   

  1. (1College of Agriculture, Luoyang Key Laboratory of Peony, Henan University of Science and Technology, Luoyang, Henan471003, China; 2 College of Horticultural and Foretry Science, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070,china)
  • Received:2009-05-13 Revised:2009-08-31 Online:2009-11-25 Published:2009-11-25
  • Contact: BAO Man-zhu

摘要: 测定了牡丹品种‘洛阳红’和‘胡红’花发育过程中花瓣多酚类功能成分与抗氧化活性的变化。结果表明: 两个品种牡丹花瓣富含多酚、类黄酮与花色素苷, 花发育过程中花瓣总酚含量呈下降趋势。开花前期花瓣提取液在卵黄脂蛋白PUFA过氧化体系中维持较高的抗氧化活性和自由基清除能力, 开花后抗氧化活性和自由基清除能力明显下降。牡丹花瓣多酚含量与清除DPPH自由基活性之间呈现显著的正相关。

关键词: 牡丹, 花瓣, 抗氧化活性, DPPH自由基, 多酚

Abstract: Changes of poly phenolics and antioxidative activities in petals during florescence and flower senescence of two tree peony cultivarswere analyzed. The results showed that there were richwith total phenolics, flavonoids and anthocyanin of petal in ‘Luoyanghong’and ‘Huhong’, while content of total phenolics decreased in petal during florescence and flower senescence of peonies. The antioxidative activity in the peroxidation system of polyunsaturated fatty acid from lipoprotein induced by iron and secavenging ridical ability in three radical detective systems was at a high level during florescence and declined rip idly after blooming. Significantly positive correlation existed between content of total phenolics and IC50 of DPPH secavenging ability in both the peony cultivars. Itwas proposed that decrease of content of poly phenolics and antioxidative activity was a main physioglical reason for petal senescence of peonies. Tree peonies flowers from early bloom stage to full opening stage possess the high functional benefit and thuswould be the app rop riate stage in view of the nutritional consideration.

Key words: Paeonia suffruticosa, petal, antioxidative activity, DPPH radical, poly phenolics

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