@article {17844, title = {The use of olive mill wastewater by wild type Yarrowia lipolytica strains: medium supplementation and surfactant presence effect}, journal = { Journal of Chemical Technology and Biotechnology}, volume = {84}, year = {2009}, month = {2009-04-01 00:00:00}, pages = {533-537}, publisher = {Society of Chemical Industry}, abstract = {

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 olivemill 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.

}, keywords = {fermentation, lipase, Olive mill wastewater, Yarrowia lipolytica}, doi = {10.1002/jctb.2075}, url = {http://repositorium.sdum.uminho.pt/bitstream/1822/9484/1/Lopes_JCTB.pdf}, author = {Lopes, M. and Araujo, C. and Aguedo, M. and Gomes, N. and Gon{\c c}alves, C. and Teixeira, J. A. and Belo, I.} }