title: Effect of plant oils upon lipase and citric acid production in Yarrowia lipolytica yeast.
abstract: The nonconventional yeast Yarrowia lipolytica degrades very efficiently hydrophobic substrates to produce organic acids, single-cell oil, lipases, and so forth. The aim of this study was to investigate the biochemical behavior and simultaneous production of valuable metabolites such as lipase, citric acid (CA), and single-cell protein (SCP) by Yarrowia lipolytica DSM 3286 grown on various plant oils as sole carbon source. Among tested plant oils, olive oil proved to be the best medium for lipase and CA production. The Y. lipolytica DSM 3286 produced 34.6 +/- 0.1 U/mL of lipase and also CA and SCP as by-product on olive oil medium supplemented with yeast extract. Urea, as organic nitrogen, was the best nitrogen source for CA production. The results of this study suggest that the two biotechnologically valuable products, lipase and CA, could be produced simultaneously by this strain using renewable low-cost substrates such as plant oils in one procedure.
authors.affiliation: Department of Biology, University of Isfahan, Isfahan 81746-73696, Iran.
authors.forename: Farshad
authors.initials: F
authors.lastname: Darvishi
authors.forename: Iraj
authors.initials: I
authors.lastname: Nahvi
authors.forename: Hamid
authors.initials: H
authors.lastname: Zarkesh-Esfahani
authors.forename: Fariborz
authors.initials: F
authors.lastname: Momenbeik
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000737:chemistry; D019343:Citric Acid / Q000378:metabolism*; D005285:Fermentation; D057927:Hydrophobic and Hydrophilic Interactions; D007218:Industrial Microbiology; D008049:Lipase / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D025062:Yarrowia / Q000378:metabolism*
chemical_list: D010938:Plant Oils; D019343:Citric Acid; D002244:Carbon; D008049:Lipase; D009584:Nitrogen