BACKGROUND Petroleum polymers contribute to non-degradable waste materials and it would therefore be desirable to produce ecofriendly degradable materials. Biodegradation of polyhydroxybutyrate (PHB) in the presence of oligomer hydrolase and PHB depolymerase gave 3-hydroxybutyric acid which could be oxidized to acetyl acetate. Several bacteria and fungi can degrade PHB in the soil. RESULTS Bi...

Polyhydroxybutyrate (PHB) synthase catalyzes the polymerization of (R)-3-hydroxybutyryl-CoA (CoA = coenzyme A) into high molecular weight PHB. Recombinant wild-type (wt) class III synthase from Allochromatium vinosum (PhaCPhaE(Av)), antibodies to this synthase and to PHB, and [(14)C]hydroxybutyryl-CoA (HB-CoA) have been used to detect oligomeric hydroxybutyrate (HB) units covalently bound to th...

382 ©2014 Society for Biomaterials

Crude glycerol (CG), a by-product of biodiesel production, is an organic carbon-rich substrate with potential as feedstock for polyhydroxyalkanoate (PHA) production. PHA is a biodegradable thermoplastic synthesized by microorganisms as an intracellular granule. In this study we investigated PHA production on CG using mixed microbial consortia (MMC) and determined that the enriched MMC produced ...

In reaction to the environmental issues caused by plastics of petrochemical beginning, a decrease in utilization these materials and their substitution biodegradable polymers has been sought. Polyhydroxybutyrate (PHB), biopolymer biological beginning that place polyhydroxyalkanoates (PHAs), is comparable polypropylene terms its mechanical properties, thermo degradability dissolving temperature....

Modeling and simulation of Polyhydroxybutyrate (PHB) production by Protomonas extorquens in fed-batch culture were conducted in this research. The fed-batch model, developed for this process, employed a kinetic model proposed by other researchers. Several kinetic models were investigated to choose the best model. The criterion for this selection was goodness of fit (δ2). Haldane kinetic model w...

* Author for correspondence: , Professor and Head, Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, Hauz Khas, New Delhi-110016, India. Tel: 91-11-26596109, Fax : 91-1126582282, Email : [email protected]. Abstract. Synthetic polymers or plastics have versatile qualities of strength, lightness, and protection and were initially developed for their...