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8 September 2026

Onions: why red and yellow varieties surpass white ones in antioxidants

Red and yellow onions contain much higher concentrations of antioxidants than their white counterparts, thanks to a wealth of flavonoids like quercetin. These natural compounds from the Allium family play a key role in managing daily oxidative stress. Yet, few truly understand why this color difference makes all the nutritional difference.

Illustration image © TopTenPlay
Symbolbild © TopTenPlay

Behind the apparent banality of the onion lies a biochemical composition…

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