Production of Polyhydroxyalkanoate Co-polymer by Bacillus Thuringiensis

Overview

Journal Indian J Microbiol

Specialty Microbiology

Date 2014 Jan 16

PMID 24426082

Citations 27

Authors

Mamtesh Singh

Prasun Kumar

Sanjay K S Patel

Vipin C Kalia

Affiliations

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Abstract

Integrative processes for the production of bioenergy and biopolymers are gaining importance in recent years as alternatives to fossil fuels and synthetic plastics. In the present study, Bacillus thuringiensis strain EGU45 has been used to generate hydrogen (H2), polyhydroxybutyrate (PHB) and new co-polymers (NP). Under batch culture conditions with 250 ml synthetic media, B. thuringiensis EGU45 produced up to 0.58 mol H2/mol of glucose. Effluent from the H2 production stage was incubated under shaking conditions leading to the production of PHB up to 95 mg/l along with NP of levulinic acid up to 190 mg/l. A twofold to fourfold enhancement in PHB and up to 1.5 fold increase in NP yields was observed on synthetic medium (mixture of M-9+GM-2 medium in 1:1 ratio) containing at 1-2 % glucose concentration. The novelty of this work lies in developing modified physiological conditions, which induce bacterial culture to produce NP.

Citing Articles

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