4.1. Biodegradable Plastics The accumulation of petrochemical plastic materials, despite being among the most useful and comfortable materials for daily life, has caused serious problems to the habitat of fauna and flora, also posing a threat to humans [418]. Most plastics take hundreds of years to degrade, and for this reason, one-third of plastic ends up as marine or land pollution [419,420]. Just think that every year, millions of tons of plastic waste end up in the oceans.
