Buscar

 

RI UFLA (Universidade Federal de Lavras) >
DCA - Departamento de Ciência dos Alimentos >
DCA - Artigos publicados em periódicos >

Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/4687

Title: Lipid and citric acid production by wild yeasts grown in glycerol
???metadata.dc.creator???: Souza, K. S. T.
Schwan, R. F.
Dias, D. R.
Keywords: Oleaginous yeasts
Biodiesel
Fatty acids
Yarrowia lipolytica
Publisher: The Korean Society for Microbiology and Biotechnology
Issue Date: Apr-2014
Citation: SOUSA, K. S. T.; SCHWAN, R. F.; DIAS, D. R. Lipid and citric acid production by wild yeasts grown in glycerol. Journal of Microbiology and Biotechnology, Seoul, v. 24, n. 4, p. 497-506, abr. 2014.
Abstract: In this study, crude glycerol was used as a carbon source in the cultivation of wild yeasts, aiming for the production of microbial lipids and citric acid. Forty yeasts of different sources were tested concerning their growth in crude and commercial glycerol. Four yeasts (Lidnera saturnus UFLA CES-Y677, Yarrowia lipolytica UFLA CM-Y9.4, Rhodotorula glutinis NCYC 2439, and Cryptococcus curvatus NCYC 476) were then selected owing to their ability to grow in pure (OD600 2.133, 1.633, 2.055, and 2.049, respectively) and crude (OD600 2.354, 1.753, 2.316, and 2.281, respectively) glycerol (10%, 20%, and 30%). Y. lipolytica UFLA CM-Y9.4 was selected for its ability to maintain cell viability in concentrations of 30% of crude glycerol, and high glycerol intake (18.907 g/l). This yeast was submitted to lipid production in 30 g/l of crude glycerol, and therefore obtained 63.4% of microbial lipids. In the fatty acid profile, there was a predominance of stearic (C18:0) and palmitic (C16:0) acids in the concentrations of 87.64% and 74.67%, respectively. We also performed optimization of the parameters for the production of citric acid, which yielded a production of 0.19 g/l of citric acid in optimum conditions (38.4 g/l of crude glycerol, agitation of 184 rpm, and temperature of 30°C). Yarrowia lipolytica UFLA CM-Y9.4 presented good lipid production when in the concentration of 30 g/l of glycerol. These data may be used for production in large quantities for the application of industrial biodiesel.
URI: http://www.jmb.or.kr/journal/view.html?book=Journal&tops=&start=0&scale=50&key=all&key_word=&Vol=24&Num=4&PG=&year1=&year2=&sort=publish_Date+desc&aut_box=Y&sub_box=Y&sos_box=&key_box=&pub_box=Y&abs_box=&mod=vol&mnum=4486
http://repositorio.ufla.br/jspui/handle/1/4687
???metadata.dc.language???: en
Appears in Collections:DCA - Artigos publicados em periódicos

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


View Statistics

 


DSpace Software Copyright © 2002-2010  Duraspace - Feedback