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Title: Biological Valorization of Pure and Crude Glycerol into 1,3-Propanediol Using a Novel Isolate Lactobacillus Brevis N1E9.3.3 Bioresource Technology 213:222-230,Aug
Authors: Vivek, N
Pandey, A
Binod, P
Keywords: 1,3-Propanediol
Crude glycerol
Lactobacillus brevis
Self anaerobiosis
Issue Date: Aug-2016
Publisher: Elsevier
Citation: Bioresource Technology, 213:222-230
Abstract: The aim of the study was to evaluate a novel onsite enrichment approach to isolate a crude glycerol utilizing facultative anaerobic bacteria. An onsite enrichment in natural conditions resulted an isolate, Lactobacillus brevis N1E9.3.3, that can utilize glycerol and produce 1,3-propanediol with a yield of 0.89g1,3-PDO/gGlycerol and productivity of 0.78g1,3-PDO/l/h at pH-8.5 under anaerobic conditions. Batch fermentation experiments with glycerol-glucose co-fermentation strategy was carried out to evaluate the production of 1,3-propanediol and other byproducts. The effect of other carbon sources as co-substrate was also evaluated. At the optimized condition, 18.6g/l 1,3-propanediol was monitored when biodiesel industry generated crude glycerol and 2.5% glucose were used as the substrate.
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