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