SEARCH Articles Figures Tables Polyhydroxyalkanoate Polyhydroxyalkanoate degradation Polyhydroxyalkanoate degradation Polyhydroxyalkanoate extracellular degradation Polyhydroxyalkanoates bacterial degradation Polyhydroxyalkanoates degradation mechanism Polyhydroxyalkanoates enzymatic degradation Polyhydroxyalkanoates extracellular degradation Polyhydroxyalkanoates intracellular degradation Polyhydroxyalkanoates thermal degradation