polyethylene terephthalate (PETE) þ 1% additive, plastarch, a copolyester
þ corn-based plastic, a wheat starch-derived plastic and
PHA (Tables 2 and 3). Six natural fiber composite materials were
also tested: paper pulp, paper pulp þ asphalt, coconut coir, rice hull,
composted cow manure and peat fiber. All samples were incubated
in triplicate for a period of 660 days