Fuente: WIPO "tomato" Disclosed are compositions and methods for food packaging materials, more specifically biodegradable and edible food coatings including (1) a biological material extract such as a seaweed extract; (2) a vegetable oil or an algal oil, or a combination thereof; and (3) a plant extract/s such as a spice extract or an essential oil or emulsifier. Methods for making seaweed extract and improving the shelf life and marketability of perishable biological materials are also disclosed.