LC CHARACTERISATION OF PEANUT SKIN PHYTONUTRIENTS: ANTIOXIDANT, RADICAL-SCAVENGING, AND BIOLOGICAL ACTIVITIES

摘要

Peanut skin is a traditionally known low-value by-product of the peanut industry. Commonly, peanut skins are removed in dry-blanching operations (i.e., skins are blown off with heat and high-pressured air) or in dry-roasting operations (by agitation) and pressed into pellets to be sold as animal feed with a commercial value of only $12-20 per ton. Only in recent years, as the interest in polyphenols fractions from grape seeds and skins boomed, peanut skins have been considered for their flavonoid and tannin constituents (e.g. proanthocyanidins [PACs], sometimes referred to as oligomeric proanthocyanidins [OPCs]). As a result of this, peanut skins and related products are now being screened for insertion into value-added products and nutraceuticals for the promotion of human health and wellness.