A comprehensive review of the value-added uses of peanut (Arachis hypogaea) skins and by-products

Globally, peanut seeds are grown for oil production, peanut butter, confections, snacks and protein extenders, leaving the peanut by-products (skins, peanut hulls) as waste for disposal. Numerous studies have identified the value added attributes of peanut skins and/or peanut skin extracts as an antioxidant, functional food ingredient, animal production feed ingredient, and antimicrobial agent. This manuscript presents a comprehensive review of the food and non-food uses of peanut skins and/or extracts, and new uses of this significant agricultural waste product produced in the peanut industry. An improved comprehensive knowledge and better understanding of the value added uses of peanut skins enables us to better define future food and non-food uses of this agricultural by-product.