By Hugo Francisco de Souza Reviewed by Susha Cheriyedath, M.Sc. Jul 14 2025 Could a humble nut by-product make your burger healthier and last longer? New research shows that hazelnut skin extract can naturally fight spoilage in pork burgers, no synthetic additives required. Study: Incorporation of hazelnut skin green extract in pork burgers delays lipid oxidation during cooking and in vitro digestion . Image Credit: Alina Kay / Shutterstock In a recent study in the Journal of the Science of