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Bioengineering 2016, 3(4), 34; doi:10.3390/bioengineering3040034

Biodegradable Polymeric Substances Produced by a Marine Bacterium from a Surplus Stream of the Biodiesel Industry

1
Process Design and Engineering Cell, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
2
Salt and Marine Chemicals, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
3
DTU BIOSUSTAIN, Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby 2800, Denmark
4
Research & Product Development, Algallio Biotech Private Limited, Vadodara 390020, India
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Martin Koller
Received: 13 September 2016 / Revised: 11 November 2016 / Accepted: 24 November 2016 / Published: 30 November 2016
(This article belongs to the Special Issue Advances in Polyhydroxyalkanoate (PHA) Production)
View Full-Text   |   Download PDF [2470 KB, uploaded 30 November 2016]   |  

Abstract

Crude glycerol is generated as a by-product during transesterification process and during hydrolysis of fat in the soap-manufacturing process, and poses a problem for waste management. In the present approach, an efficient process was designed for simultaneous production of 0.2 g/L extracellular ε-polylysine and 64.6% (w/w) intracellular polyhydroxyalkanoate (PHA) in the same fermentation broth (1 L shake flask) utilizing Jatropha biodiesel waste residues as carbon rich source by marine bacterial strain (Bacillus licheniformis PL26), isolated from west coast of India. The synthesized ε-polylysine and polyhydroxyalkanoate PHA by Bacillus licheniformis PL26 was characterized by thermogravimetric analysis (TGA), differential scanning colorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and 1H Nuclear magnetic resonance spectroscopy (NMR). The PHA produced by Bacillus licheniformis was found to be poly-3-hydroxybutyrate-co-3-hydroxyvalerate (P3HB-co-3HV). The developed process needs to be statistically optimized further for gaining still better yield of both the products in an efficient manner. View Full-Text
Keywords: crude glycerol; polyhydroxyalkanoate; ε-polylysine; Bacillus licheniformis; fermentation crude glycerol; polyhydroxyalkanoate; ε-polylysine; Bacillus licheniformis; fermentation
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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. (CC BY 4.0).

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MDPI and ACS Style

Bhattacharya, S.; Dubey, S.; Singh, P.; Shrivastava, A.; Mishra, S. Biodegradable Polymeric Substances Produced by a Marine Bacterium from a Surplus Stream of the Biodiesel Industry. Bioengineering 2016, 3, 34.

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