Article (Scientific journals)
The use of olive mill wastewater by wild type Yarrowia lipolytica strains: Medium supplementation and surfactant presence effect
Lopes, M.; Araújo, C.; Aguedo, Mario et al.
2009In Journal of Chemical Technology and Biotechnology, 84 (4), p. 533-537
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Keywords :
Fermentation; Lipase; Olive mill wastewater; Yarrowia lipolytica; Ammonium sulphate; Cellular growth; COD reduction; Culture medium; Extracellular lipase; Lipase activity; Lipase production; Olive mill wastewaters; Operating condition; Total phenols; Tween 80; Valorisation; Wild types; Wild-type strain; Y. lipolytica; Ammonium compounds; Biochemical engineering; Biomass; Cell culture; Degradation; Growth kinetics; Lipases; Phenols; Strain; Surface active agents; Wastewater; Chemical oxygen demand
Abstract :
[en] Background: The aim of this work was to study the ability of two different wild type strains of the yeast Yarrowia lipolytica to grow on olive mill wastewater (OMW) and their potential to produce high-value products such as lipases. Factors that affect cellular growth and OMW degradation were studied, such as nitrogen supplementation, cells concentration and surfactant addition. Results: Both strains, W29 and IMUFRJ 50682, were able to grow in OMW with 19 g L-1 of COD and approximately 800 mg L-1 of total phenols concentration. The strain W29 presented the highest potential for extracellular lipase production in OMW medium. Lipase productivity was improved by the medium supplementation with ammonium sulphate up to 6 g L-1, leading to 80% of COD degradation and 70% of total phenols reduction. The surfactant Tween 80 enhanced cell growth and COD degradation, but had a negative effect on lipase activity. Conclusions: Y. lipolytica has a great potential for OMW valorisation by its use as culture medium for biomass and enzymes production. The operating conditions that favoured lipase production differ from the conditions that improve COD reduction. © 2008 Society of Chemical Industry.
Disciplines :
Chemistry
Author, co-author :
Lopes, M.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Araújo, C.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Aguedo, Mario ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Gomes, N.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Gonçalves, C.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Teixeira, J. A.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Belo, I.;  IBB-Institute for Biotechnology and Bioengineering, Centre for Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
Language :
English
Title :
The use of olive mill wastewater by wild type Yarrowia lipolytica strains: Medium supplementation and surfactant presence effect
Publication date :
2009
Journal title :
Journal of Chemical Technology and Biotechnology
ISSN :
0268-2575
Publisher :
John Wiley & Sons, Hoboken, United States - New Jersey
Volume :
84
Issue :
4
Pages :
533-537
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 February 2014

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