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Production of d-arabitol from raw glycerol by Candida quercitrusa.

Authors :
Yoshikawa, Jun
Habe, Hiroshi
Morita, Tomotake
Fukuoka, Tokuma
Imura, Tomohiro
Iwabuchi, Hiroyuki
Uemura, Shingo
Tamura, Takamitsu
Kitamoto, Dai
Source :
Applied Microbiology & Biotechnology. Apr2014, Vol. 98 Issue 7, p2947-2953. 7p.
Publication Year :
2014

Abstract

To promote the effective use of raw glycerol (a by-product of biodiesel production), 110 yeast strains that produce d-arabitol from glycerol were isolated from environmental samples. Among them, strain 17-2A was an effective d-arabitol producer in the presence of 250 g/l glycerol and was identified as Candida quercitrusa based on morphological, physicochemical, and phylogenetic analyses. C. quercitrusa type strain NBRC1022 produced the greatest quantity of d-arabitol (41.7 g/l) when the ability to produce d-arabitol from raw glycerol was compared among C. quercitrusa 17-2A and its phylogenetically related strains in flask culture. Under optimized culture conditions, strain NBRC1022 produced d-arabitol at a concentration of 58.2 g/l after a 7-day cultivation in 250 g/l glycerol, 6 g/l yeast extract, and 2 g/l CaCl. The culture conditions were further investigated with raw glycerol using a jar fermenter; the concentration of d-arabitol reached 67.1 g/l after 7 days and 85.1 g/l after 10 days, respectively, which corresponded to 0.40 g/g of glycerol. To our knowledge, the present d-arabitol yield from glycerol is higher than reported previously using microbial production. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01757598
Volume :
98
Issue :
7
Database :
Academic Search Index
Journal :
Applied Microbiology & Biotechnology
Publication Type :
Academic Journal
Accession number :
95298937
Full Text :
https://doi.org/10.1007/s00253-013-5449-x