不同品种芒果核多酚和黄酮含量及抗氧化活性评价

为给芒果加工副产物综合利用提供理论依据，以芒果核为原料，研究桂七、贵妃、台农、金煌芒、玉芒和象牙芒六个品种中的多酚和黄酮含量及其抗氧化活性的影响。结果显示，玉芒芒果核多酚和黄酮含量最高，分别为4.31和1.07 mg/g，金煌芒、台农、桂七、象牙芒、贵妃芒果核中的多酚含量分别为4.20、4.10、3.96、3.86、3.82 mg/g，其黄酮含量分别为0.95、0.88、0.92、0.96、0.75 mg/g；抗氧化活性研究结果发现，玉芒芒果核羟基自由基（·OH）清除率、超氧阴离子自由基清除率最强，为90.1%和83.9%。通过相关性分析发现，多酚和黄酮含量分别与羟基自由基清除率、超氧阴离子自由基清除率显著相关（P<0.05），不同品种芒果核中多酚、黄酮含量高低与其抗氧化活性呈正效应的量效关系，且黄酮对芒果核抗氧化能力影响较大，其含量的变化有可能是导致不同品种芒果核抗氧化能力差异的重要因素。

Contents of Polyphenols and Flavonoids and Its Antioxidant Activity Evalution in Different Kinds of Mango Kernel Seeds

In order to provide a theoretical basis for comprehensive utilization of mango byproducts, mango (Mangifera India L) kernel seeds were used as materials, the contents of polyphenol and flavonoid in mango of different varieties (Guiqi, Guifei, Tainong, Jinhuang, Yu and Ivory) mango kernel seeds and the antioxidant activity were studied. The contents of polyphenol and flavonoid in six varieties of mango kernel seeds were abundant. The highest contents of polyphenol and flavonoid in Yu were 4.31 and 1.07 mg/g. The respective polyphenol contents of Jinhuang, Tainong, Guiqi, Ivory, Guifei mango kernel seeds were 4.20, 4.10, 3.96, 3.86 and 3.82 mg/g. The respective flavonoid content of those was 0.95, 0.88, 0.92, 0.96 and 0.75 mg/g. The reasons of the differences of antioxidant activity of mango seeds were analyzed. The results showed that the scavenging rates of hydroxyl radical (·OH) and superoxide anion radical were the highest, which were 90.1% and 83.9%. Through correlation analysis found that the contents of polyphenol and flavonoid in different varieties mango kernel seeds were correlated with hydroxyl radical scavenging rate and superoxide anion radical scavenging rate significantly, respectively(P<0.05), and flavonoid had a greater influence on the antioxidant capacity of mango kernel seeds, and changes of flavonoid content might be an important factor leading to the difference of antioxidant capacity of different varieties of mango seeds.