cellulose fibers — fibers made from reconstituted cellulose. casein — a phosphoprotein extracted from milk during the process of creating low fat milk, it is processed in various ways to make: plastic, dietary supplements for body builders, glue, cotton candy, protective coatings, paints, and occurs naturally in cheese, giving it a creamy texture. polylactic acid — a polymer produced by industrial fermentation bioplastics — include a soy oil based plastic now being used to make body panels for John Deere tractors engineered wood — products such as oriented strand board and particle board zein — a natural biopolymer which is the most abundant corn protein cornstarch — the starch of the maize grain, used to make packing pellets grease — lubricants made from vegetable oils, including soybean oil, that can replace petroleum based lubricants