Study of Production and Degradation Impact of Bioplastic or Polyhydroxyalkanoate, (PHA)

Polyhydroxyalkanoates (PHAs) is reported as polyesters of hydroxyalkanoates (HAs) which is generally synthesized by numerous bacteria and it is stored in the cytoplasm of cells as an intracellular carbon and energy sources compound. It has been considered as a replacement for conventional plastics. Microbial cell such as Alcaligenes, Pseudomonas, recombinant Escherichia coli and methylotrophs are important bacterial organisms and used frequently in variety of polyhydroxyalkanoates synthesis such as polyhydroxybutyrate (PHB) or others PHAs. We have noticed the influence of different degrees of carbon and nitrogen limitation on the performance of an acetate-fed feast–famine sequencing batch reactor (SBR) which are employed to enrich PHA storing bacteria. Microbial selection and biomass production stage played important role in PHA production process under carbon limitation. It can create favorable by utilizing the nutrient deficient waste waters with supplementation with nutrients via producing stable PHA storing biomass with a high storage capacity. Waste streams as suitable substrates have been used for mixed culture bioplastic producer.