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作 者 ：徐宏化， 程慧， 王正加， 付顺华， 斯金平， 于敏， 张爱莲

期 刊 ：核农学报 2016年 30卷 1期 页码：72-78

关键词：美国山核桃；多酚；黄酮；抗氧化活性；聚类分析；

Keywords:Carya illinoinensis, polyphenols, flavonoids, antioxidant activity, cluster analysis,

摘 要 ：为研究不同种质美国山核桃中总多酚与总黄酮含量及抗氧化活性的差异,对29个美国山核桃种质脱脂种仁的总多酚、总黄酮含量及抗氧化活性进行测定和比较。结果表明,29个美国山核桃种质脱脂种仁的总多酚、总黄酮含量及抗氧化活性存在显著差异,其中ZL86号种质总多酚含量最高,为47.96 mg GAE·g^-1, 且抗氧化活性最强;ZL65号种质总黄酮含量最高, 为24.01 mg RE·g^-1;总多酚、总黄酮含量均与抗氧化活性呈极显著正相关。聚类分析将29个种质分为2类:Ⅰ类包含18个种质,其总多酚含量、总黄酮含量和抗氧化活性均较低;Ⅱ类包含11个种质,其总多酚含量、总黄酮含量和抗氧化活性均较高。 本研究为美国山核桃品种的选育提供了一定的理论依据。

Abstract:Total polyphenols (TPs), total flavonoids (TFs) and antioxidant capacity (AC) of 29 pecan germplasms were determined and analyzed, so as to reveal the difference of indice among those various germplasm. The results showed that TPs, TFs and AC were all significantly different among those 29 pecan germplasms. ZL86 showed the highest TPs content (47.96 mg GAE·g^-1) and AC values, ZL65 showed the highest TFs content (24.01 mg RE·g^-1). Meanwhile, AC correlated positively with TPs and TFs (P < 0.01). Cluster analysis indicated 29 pecan germplasms could be classified into two subgroups based on the contents of TPs, TFs and AC. Group Ⅰ (including 18 germplasm) showed relatively low TPs, TFs and AC, while those of group Ⅱ (including 11 germplasms) were higher. These results might provide theoretical support for breeding and varieties selecting of pecan.

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