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Characterization of Polyhydroxybutyrate Producing Bacterium Isolated from Sewage Sample
Summary
Researchers identified and characterized bacterial strains isolated from sewage samples that are capable of producing polyhydroxybutyrate (PHB), a biodegradable thermoplastic. The study screens natural microbial communities for strains useful in sustainable bio-based plastic production.
The increasing importance of the non-degradable plastics has emerged as one of the major concerns. For this, research is being ventured from the existing reserve to produce bioplastics on the basis of biodegradability properties. Polyhydroxybutyrate, a thermoplastic that is biodegradable as well as environmental friendly, is one such example. Present study identifies potential bacteria strains producing Polyhydroxybutyrate from sewage soil sample collected from Tenali, Guntur District. AR15, one of the derivatives from the ten bacterial isolates recognized through Sudan Black staining, was perceived to be a potential PHB producer. A preliminary identification of the isolate was achieved through biochemical characterization and was found to be Bacillus sp. Biopolymer obtained from the isolate was characterized by FTIR and TGA. Further the biopolymer compared with standard and was seen to be Polyhydroxybutyrate.