Fed-batch fermentation of olive mill wastewaters for lipase production

last updated: 2013-12-02
TitleFed-batch fermentation of olive mill wastewaters for lipase production
Publication TypePapers in Scientific Journals
Year of Publication2012
AuthorsGonçalves C., Oliveira F., and Belo I.

In the Mediterranean basin countries, huge amounts of olive mill wastewaters (OMW) are produced by the olive oil industry. It constitutes a serious environmental problem, nevertheless its composition turns OMW into a potential growth medium to lipolytic microorganisms. The aim of this work was to study lipase production as well as OMW degradation in fed-batch cultures of Candida cylindracea CBS 7869,Candida rugosa CBS 2275 and Yarrowia lipolytica W29 (ATCC 20460). Besides the improvement of lipase production, the fed-batch approach enhanced the effluent degradation, since it led to good COD and lipids reduction, both higher than 50%. C. rugosa achieved the highest value of lipase productivity (130 U L−1 h−1), in parallel with highest lipids reduction (77%). This study demonstrates that OMW are becoming a competitive and valuable growth medium in fermentation processes with lipolytic microorganisms. The fed-batch strategy used proved to be an efficient approach to enhance lipase production from OMW and to reduce significantly the final organic load of the medium. 

JournalJournal of Chemical Technology and Biotechnology
Date Published2012-08-01
PublisherSociety of Chemical Industry
KeywordsCandida species, fed-batch fermentation, lipase, Olive mill wastewater, Yarrowia lipolytica
Peer reviewedyes

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