Dynamic membrane-assisted fermentation of food wastes for enhancing lactic acid production

Tang, J; Wang, XC; Hu, Y; Ngo, HH; Li, Y

Dynamic membrane-assisted fermentation of food wastes for enhancing lactic acid production

Tang, J Wang, XC Hu, Y Ngo, HH

Li, Y

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2017, 234 pp. 40 - 47
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Tang, J	en_US
dc.contributor.author	Wang, XC	en_US
dc.contributor.author	Hu, Y	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Li, Y	en_US
dc.date.available	2020-05-25T19:03:16Z
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2017, 234 pp. 40 - 47	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/113824
dc.description.abstract	© 2017 Elsevier Ltd A dynamic membrane (DM) module was inserted into a fermentation reactor to separate soluble products from the fermented mixture to increase lactic acid (LA) production from food wastes under acidogenic conditions (uncontrolled pH, pH 4 and 5). With a high total suspended solid content (20–40 g/L) in the fermenter, a stable DM could be maintained through regular backwashing. By effectively intercepting suspended solids and lactic acid bacteria (LAB), the fermenter was able to increase microbial activity and largely promote LA yield. Hydrolysis and acidogenesis rates increased with pH, and the highest LA yield (as high as 0.57 g/g-TS) was obtained at pH 4. The microbial community analysis showed that the relative abundance of Lactobacillus increased to 96.4% at pH 4, but decreased to 43.3% at pH 5. In addition, the DM could be easily recovered by intercepting larger particles in less than 2 h after each cycle of periodic backwashing.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2017.03.019	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Lactobacillus	en_US
dc.subject.mesh	Lactic Acid	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Fermentation	en_US
dc.subject.mesh	Food	en_US
dc.title	Dynamic membrane-assisted fermentation of food wastes for enhancing lactic acid production	en_US
dc.type	Journal Article
utslib.citation.volume	234	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	234	en_US

Abstract:

© 2017 Elsevier Ltd A dynamic membrane (DM) module was inserted into a fermentation reactor to separate soluble products from the fermented mixture to increase lactic acid (LA) production from food wastes under acidogenic conditions (uncontrolled pH, pH 4 and 5). With a high total suspended solid content (20–40 g/L) in the fermenter, a stable DM could be maintained through regular backwashing. By effectively intercepting suspended solids and lactic acid bacteria (LAB), the fermenter was able to increase microbial activity and largely promote LA yield. Hydrolysis and acidogenesis rates increased with pH, and the highest LA yield (as high as 0.57 g/g-TS) was obtained at pH 4. The microbial community analysis showed that the relative abundance of Lactobacillus increased to 96.4% at pH 4, but decreased to 43.3% at pH 5. In addition, the DM could be easily recovered by intercepting larger particles in less than 2 h after each cycle of periodic backwashing.

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http://hdl.handle.net/10453/113824