Scientists racing to tackle plastic pollution have created a surprising new contender: a biodegradable packaging film made partly from milk protein. Researchers at Flinders University blended calcium caseinate with starch and natural nanoclay to form a thin, durable material designed to mimic everyday plastic. In soil tests, the film fully broke down in about 13 weeks, pointing to a realistic alternative for single-use food packaging.
I get you. The person you responded to talked about “the plastic one” and meant the old style non-milk plastic one, but the milk plastic one is also a “plastic one”. It was a tad unclear.