Black soybean seed coat polyphenols have different effects on glucose and lipid metabolism in growing and young adult mice.

Black soybean contains flavan-3-ols and cyanidin 3--glucoside in its seed coat. Polyphenol-rich black soybean seed coat extract (BE) possesses various health benefits, such as antioxidant, anti-obesity, and anti-hyperglycemic effects. However, these functions have been evaluated mainly in the growing stage of animals, and there is no comparison data for different life stages.