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TitleOlive mill wastewater valorization : use by non-conventional yeasts
Author(s)Gonçalves, Cristiana
Lopes, Marlene
Aguedo, Mário
Belo, Isabel
KeywordsCandida rugosa
Olive mill wastewater (OMV)
Yarrowia lipolytica
Issue date2008
CitationNZIHOU, Ange; LYBERATOS, Gerasimos, ed. lit. – “WasteEng08 : proceedings of the 2nd International Conference on Engineering for Waste Valorisation” [CD-ROM]. [Patras : University of Patras, 2008]. ISBN 978-960-530-101-9.
Abstract(s)The ability of the strains Yarrowia lipolytica and Candida rugosa to grow on Olive Mill Wastewater (OMW) based medium and to produce high-value compounds from OMW (such as enzymes), while degrading this waste, was tested. Factors affecting cellular growth and OMW degradation were also studied, such as OMW composition, dilution and supplementation. OMW collected from 3-phase olive mill of the north region of Portugal were used and characterized chemical and biochemically. OMW with COD ranging from 100 g·L-1 to 200 g·L-1 were supplemented with yeast extract and ammonium chloride proportionally to its organic composition. Preliminary studies of OMW consumption were carried out in batch cultures of Y. lipolytica W29 and C. rugosa PYCC 3238. The strains were able to grow in the OMW used without dilution, to consume almost all of the sugars present in the media and to significantly reduce COD. Y. lipolytica W29 was less affected by operating conditions changes such as, stirring rate variation and OMW medium supplementation.
TypeConference paper
AccessOpen access
Appears in Collections:CEB - Artigos em Livros de Atas / Papers in Proceedings

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