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作 者 ：张艳军1,杨途熙2*,魏安智2,冯世静2

期 刊 ：西北植物学报 2013年 3期 页码：620~625

关键词：花椒；总黄酮；多酚；还原力；羟基自由基清除率；

Keywords:Zanthoxylum bungeagum Maxim., total flavonoids, total polyphenol, reducing power, ·OH- scavenging capacity,

摘 要 ：以7年生花椒为试材,研究不同生长时期花椒果皮的总黄酮、总多酚含量的变化以及二者与抗氧化能力的关系。结果显示:（1）在花椒果实发育过程中,花椒果皮黄酮与多酚均有积累,总黄酮含量随果实的成熟程度不断增加,于成熟期（8月1日）黄酮含量达到最大值(164.14 mg/g);但多酚含量在果实发育早期迅速上升,于6月30日达到最大值（77.17 mg/g）后快速下降,至成熟期（8月1日）多酚含量为46.23 mg/g。（2）不同时期的花椒果皮均具有还原力及羟基自由基清除能力,且二者随果实生长的增加而提高,且总黄酮、多酚含量均与还原力和羟基自由基清除能力之间呈显著正相关关系,相关系数分别为0.977、0.960和0.917、0.933。研究表明,成熟花椒果皮中总黄酮含量达到最高,多酚含量也较高,而且黄酮和多酚类物质是花椒果皮抗氧化活性的主要功效成分。

Abstract:The changes of total flavonoids content,total polyphenol content and antioxidant activities of Zanthoxylum bungeagum Maxim.and the correlation between them were investigated.The results indicated that:（1）The total flavonoid content and total polyphenol content were accumulated during the growth of Z.bungeanum Maxim..The total flavonoid content was increasing with the maturity level of the fruit,and reached its highest level in August (164.14 mg/g).Total polyphenol content was increased rapidly in the early periods of growth and reached its highest level in June (77.17 mg/g).Then it decreased rapidly to 46.23 mg/g in August.(2)The correlation between the total flavonoid content,total polyphenol content and reducing power was significantly positive (P<0.01),and the correlation coefficients are 0.977 and 0.960,respectively;there is also a significant positive relationship between flavonoid content,polyphenol content and ·OH^- scavenging capacity,and their correlation coefficients are 0.917 and 0.933,respectively.The above results indicated that the Z.bungeagum Maxim.pericarp can be used as a valuable source of antioxidant products.

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