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Title: Utilization of residues from agro-forest industries in the production of high value bacterial cellulose
Author: Carreira, Pedro
Mendes, Joana A.S.
Trovatti, Eliane
Serafim, Luísa S.
Freire, Carmen S.R.
Silvestre, Armando J.D.
Neto, Carlos Pascoal
Keywords: Bacterial cellulose production
Agro-forest residues
Carbon sources
Issue Date: 2011
Publisher: Elsevier
Abstract: Bacterial cellulose (BC), a very peculiar form of cellulose, is gaining considerable importance due to its unique properties. In this study, several residues, from agro-forestry industries, namely grape skins aqueous extract, cheese whey, crude glycerol and sulfite pulping liquor were evaluated as economic carbon and nutrient sources for the production of BC. The most relevant BC amounts attained with the residues from the wine and pulp industries were 0.6 and 0.3 g/L, respectively, followed by biodiesel crude residue and cheese whey with productions of about, 0.1 g/L after 96 h of incubation. Preliminary results on the addition of other nutrient sources (yeast extract, nitrogen and phosphate) to the residues-based culture media indicated that, in general, these BC productions could be increased by similar to 200% and similar to 100% for the crude glycerol and grape skins, respectively, after the addition organic or inorganic nitrogen. (C) 2011 Elsevier Ltd. All rights reserved.
Peer review: yes
DOI: 10.1016/j.biortech.2011.04.081
ISSN: 0960-8524
Appears in Collections:DQ - Artigos

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