Abstract:
:Long-term cell recycle fermentations of Candida tropicalis were performed over 14 rounds of fermentation. The average xylitol concentrations, fermentation times, volumetric productivities and product yields for 14 rounds were 105 g l(-1), 333 h, 4.4 g l(-1) h(-1) and 78%, respectively, in complex medium; and 110 g l(-1), 284 h, 5.4 g l(-1) h(-1) and 81%, respectively, in a chemically defined medium. These productivities were 1.7 and 2.4 times those with batch fermentation in the complex and chemically defined media, respectively. The xylitol yield from xylose with cell recycle fermentation using the chemically defined medium was 81% (w/w), which was 7% greater than the xylitol yield with batch fermentation (74%); both modes of fermentation gave the same yield using the complex medium. These results suggest that the chemically defined medium is more suitable for production of xylitol than complex medium.
journal_name
Biotechnol Lettjournal_title
Biotechnology lettersauthors
Kim TB,Lee YJ,Kim P,Kim CS,Oh DKdoi
10.1023/b:bile.0000023019.02411.54keywords:
subject
Has Abstractpub_date
2004-04-01 00:00:00pages
623-7issue
8eissn
0141-5492issn
1573-6776journal_volume
26pub_type
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