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E-Journal of Chemistry
Volume 7, S1, Pages S536-S542

Production of Polyhydroxybutyrate (Bioplastic) and its Biodegradation by Pseudomonas Lemoignei and Aspergillus Niger

S. Kumaravel,1 R. Hema,1 and R. Lakshmi2

1Indian Institute of Crop Processing Technology, Thanjavur, Tamilnadu, India
2Urumu Dhanalakshmi College, Trichirappalli, Tamilnadu, India

Received 3 March 2010; Accepted 21 May 2010

Copyright © 2010 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The biodegradation of polyhydroxybutyrate (PHB) and its copolymer polyhydroxy butyrate-co-hydroxyvalerate (PHB-co-HV) was studied. Bacterial as well as fungal isolates were isolated from the local industrial ecosystem. All these isolates were tested for the degradation of the above polymers in assay agar medium as well in liquid cultures. The culture biomass and the clear zone around the colonies were measured to evaluate the activity of these isolates. In all, the fungal isolates were found to degrade these polymers more rapidly when compared to bacteria, due to their versatile depolymerase activities.