It is reported that local time on August 21, the United States Department of agriculture (USDA) Center for Eastern studies announced the team has developed a new type of packaging material. This material is composed of species with milk protein "casein" is made, it can be consumed directly and can decompose naturally. The emergence of this packaging material will, to a large extent food packaging bags of environmental pollution problems.

Research teams on the basis of casein joined lemon and lime peel pectin components, made of transparent film. Pectin is the fruit becomes viscous substance. Manufactured goods like plastic wrap, but not elongate, rather than the packaging materials of low density polyethylene (LDPE) oxygen capacity 500 times. Oxygen will rot the food so that food containing fat Rancidity. Biodegradable packaging materials made from starch are now common, but serious due to oxygen, do not apply to food packaging.

Research teams in the United States, Texas, established a company specialized in manufacturing packaging materials, expected within three years of the official products. Research in the United States annual meeting of the Chemical Society No. 252 (ACS) published on the Institute on August 21 to 25th in United States, Pennsylvania, and is the largest society in science.

Korea Department of chemistry, sogang University Professor Li Dehuan (phonetic) said: "the perfluorinated compounds (PFCs, a former food packaging material) was once considered safe packaging materials, has now been banned, so use casein protein and pectin made from food packaging materials should be able to do the job. ”

He also expressed concern: "are worthy of consideration, and more than 2 billion people around the world are suffering from hunger, with edible casein milk extraction made paper is contrary to ethics and morality. ”