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- Fonseca, Cesar (author)
L-Arabinose metabolism in Candida arabinofermentans PYCC 5603(T) and Pichia guilliermondii PYCC 3012: influence of sugar and oxygen on product formation
- Article/chapterEnglish2007
Publisher, publication year, extent ...
- 2007-01-30
- Springer Science and Business Media LLC,2007
Numbers
- LIBRIS-ID:oai:lup.lub.lu.se:cc837718-f65a-4b5d-878f-d41bd1d8c745
- https://lup.lub.lu.se/record/657593URI
- https://doi.org/10.1007/s00253-006-0830-7DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- L-Arabinose utilization by the yeasts Candida arabinofermentans PYCC 5603(T) and Pichia guilliermondii PYCC 3012 was investigated in aerobic batch cultures and compared, under similar conditions, to D-glucose and D-xylose metabolism. At high aeration levels, only biomass was formed from all the three sugars. When oxygen became limited, ethanol was produced from D-glucose, demonstrating a fermentative pathway in these yeasts. However, pentoses were essentially respired and, under oxygen limitation, the respective polyols accumulated-arabitol from L-arabinose and xylitol from D-xylose. Different L-arabinose concentrations and oxygen conditions were tested to better understand L-arabinose metabolism. P. guilliermondii PYCC 3012 excreted considerably more arabitol from L-arabinose (and also xylitol from D-xylose) than C arabinofermentans PYCC 5603(T). In contrast to the latter, P guilliermondii PYCC 3012 did not produce any traces of ethanol in complex L-arabinose (80 g/l) medium under oxygen-limited conditions. Neither sustained growth nor active metabolism was observed under anaerobiosis. This study demonstrates, for the first time, the oxygen dependence of metabolite and product formation in L-arabinose-assimilating yeasts.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Industriell bioteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Industrial Biotechnology hsv//eng
- Hemicellulose
- yeast
- fermentation conditions
- L-Arabinose
- pentose
- Candida arabinofermentans
- Pichia guilliermondii
Added entries (persons, corporate bodies, meetings, titles ...)
- Spencer-Martins, Isabel (author)
- Hahn-Hägerdal, BärbelLund University,Lunds universitet,Teknisk mikrobiologi,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Applied Microbiology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)tmb-bhh (author)
- Teknisk mikrobiologiCentrum för tillämpade biovetenskaper (creator_code:org_t)
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- In:Applied Microbiology and Biotechnology: Springer Science and Business Media LLC75:2, s. 303-3101432-06140175-7598
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