What are the two main classes of bioactive compounds identified in the Adzuki bean coat that exhibit potent antioxidant activity?
Answer
Flavonoids and saponins
The outer layer, or coat, of the Adzuki bean is dense with compounds that fight oxidative stress. Researchers have isolated and identified a significant array of antioxidant substances within this coat. The primary categories responsible for the bean's powerful radical-scavenging capacity include flavonoids and saponins. These compounds demonstrate efficacy in neutralizing damaging free radicals, such as ABTS+· and hydroxyl radicals, sometimes surpassing the efficacy of Vitamin C, contributing to the bean's noted anti-aging potential for the skin.

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