Fecha de publicación: -- Fuente: WIPO "tomato" An entrained polymer is provided that includes in a blended form, a base polymer and a conjugated olefin, optionally lycopene or a derivative thereof. The resulting entrained polymer is useful in the manufacture of packaging for the protection of oxygen-sensitive contents. Also provided are systems and methods for reducing contamination in a product due to oxidation. Also provided are related methods of manufacture and methods of use.