PeelPhenol: Citrus Peel Solid-State Fermentation Antioxidant Ingredient

A toll-fermentation process that inoculates citrus juice processors' wet peel waste with a food-grade Aspergillus niger strain, converting bound peel flavonoids into free phenolic acids, then dries and extracts them into a standardized clean-label antioxidant powder for food and beverage brands.