Rathika, R (2018) Bioconversion of agro‑industrial efuents for polyhydroxyalkanoates production using Bacillus subtilis RS1. International Journal of Environmental Science and Technology. pp. 5725-5734.

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Abstract

The efectiveness of inexpensive agro-industrial wastes such as sugarcane molasses, paper mill efuent, and dairy efuent for
the production of polyhydroxyalkanoates (PHAs) using Bacillus subtilis RS1 was assessed in this study. Laboratory-scale fermentations were carried out with both raw and pre-treated agro-industrial efuents, and maximum PHAs yield was observed
in pre-treated efuents. Experimental variables such as pH, inoculum dose, and incubation time were further optimized to
maximize PHAs yield, and the optimal conditions were identifed as incubation time 48 h; pH 7; and inoculum dose 10%
v/v. PHAs yield in pre-treated sugarcane molasses increased to 70.5% under optimal conditions. Fourier transform infrared
spectroscopy and gas chromatography–mass spectrometric analysis revealed that the extracted polymer was composed of
penta- and hexadecanoic acid methyl esters, a copolymer of PHAs. Results indicated that the pre-treated sugarcane molasses
could be used as an inexpensive substrate for the production of PHAs.

Item Type: Article
Uncontrolled Keywords: Agro-industrial efuents · Bacillus subtilis RS1 · Fermentation · Hexadecanoic acid · Polyhydroxyalkanoates
Divisions: PSG College of Arts and Science > Department of Environmental Science
Depositing User: Mr Team Mosys
Date Deposited: 16 Aug 2022 05:19
Last Modified: 16 Aug 2022 05:19
URI: http://ir.psgcas.ac.in/id/eprint/1465

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