Fermentation performance and intracellular metabolite patterns in laboratory and industrial xylose-fermenting Saccharomyces cerevisiae.
(2002) In Applied Microbiology and Biotechnology 59(4-5). p.436-442- Abstract
- Heterologous genes for xylose utilization were introduced into an industrial Saccharomyces cerevisiae, strain A, with the aim of producing fuel ethanol from lignocellulosic feedstocks. Two transformants, A4 and A6, were evaluated by comparing the performance in 4-l anaerobic batch cultivations to both the parent strain and a laboratory xylose-utilizing strain: S. cerevisiae TMB 3001. During growth in a minimal medium containing a mixture of glucose and xylose (50 g/l each), glucose was preferentially consumed. During the first growth phase on glucose, the specific growth rates were 0.26, 0.32, 0.27 and 0.30 h-1 for strains TMB 3001, A (parental strain), A4, and A6, respectively. The specific ethanol productivities were 0.04, 0.13, 0.04 and... (More)
- Heterologous genes for xylose utilization were introduced into an industrial Saccharomyces cerevisiae, strain A, with the aim of producing fuel ethanol from lignocellulosic feedstocks. Two transformants, A4 and A6, were evaluated by comparing the performance in 4-l anaerobic batch cultivations to both the parent strain and a laboratory xylose-utilizing strain: S. cerevisiae TMB 3001. During growth in a minimal medium containing a mixture of glucose and xylose (50 g/l each), glucose was preferentially consumed. During the first growth phase on glucose, the specific growth rates were 0.26, 0.32, 0.27 and 0.30 h-1 for strains TMB 3001, A (parental strain), A4, and A6, respectively. The specific ethanol productivities were 0.04, 0.13, 0.04 and 0.03 g/g.per hour, for TMB 3001, A, A4 and A6, respectively. The specific xylose consumption rates were 0.06, 0.21 and 0.14 g/g.per hour, respectively for strains TMB 3001, A4 and A6. Xylose consumption resulted mainly in the formation of xylitol, with biomass and ethanol being minor products. The metabolite profile of intermediates in the pentose phosphate pathway and key glycolytic intermediates were determined during growth on glucose and xylose, respectively. The metabolite pattern differed depending on whether glucose or xylose was utilized. The levels of intracellular metabolites were higher in the industrial strains than in the laboratory strain during growth on xylose. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/132866
- author
- Zaldiva, J ; Borges, A ; Johansson, Björn LU ; Smits, H P ; Villas-Bôas, S G ; Nielsen, J and Olsson, L
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Microbiology and Biotechnology
- volume
- 59
- issue
- 4-5
- pages
- 436 - 442
- publisher
- Springer
- external identifiers
-
- wos:000177734800006
- pmid:12172606
- scopus:0036036461
- ISSN
- 1432-0614
- DOI
- 10.1007/s00253-002-1056-y
- language
- English
- LU publication?
- yes
- id
- 07044c80-75c1-4782-85b6-0d7c622bdaff (old id 132866)
- date added to LUP
- 2016-04-01 16:21:16
- date last changed
- 2022-02-05 07:38:18
@article{07044c80-75c1-4782-85b6-0d7c622bdaff,
abstract = {{Heterologous genes for xylose utilization were introduced into an industrial Saccharomyces cerevisiae, strain A, with the aim of producing fuel ethanol from lignocellulosic feedstocks. Two transformants, A4 and A6, were evaluated by comparing the performance in 4-l anaerobic batch cultivations to both the parent strain and a laboratory xylose-utilizing strain: S. cerevisiae TMB 3001. During growth in a minimal medium containing a mixture of glucose and xylose (50 g/l each), glucose was preferentially consumed. During the first growth phase on glucose, the specific growth rates were 0.26, 0.32, 0.27 and 0.30 h-1 for strains TMB 3001, A (parental strain), A4, and A6, respectively. The specific ethanol productivities were 0.04, 0.13, 0.04 and 0.03 g/g.per hour, for TMB 3001, A, A4 and A6, respectively. The specific xylose consumption rates were 0.06, 0.21 and 0.14 g/g.per hour, respectively for strains TMB 3001, A4 and A6. Xylose consumption resulted mainly in the formation of xylitol, with biomass and ethanol being minor products. The metabolite profile of intermediates in the pentose phosphate pathway and key glycolytic intermediates were determined during growth on glucose and xylose, respectively. The metabolite pattern differed depending on whether glucose or xylose was utilized. The levels of intracellular metabolites were higher in the industrial strains than in the laboratory strain during growth on xylose.}},
author = {{Zaldiva, J and Borges, A and Johansson, Björn and Smits, H P and Villas-Bôas, S G and Nielsen, J and Olsson, L}},
issn = {{1432-0614}},
language = {{eng}},
number = {{4-5}},
pages = {{436--442}},
publisher = {{Springer}},
series = {{Applied Microbiology and Biotechnology}},
title = {{Fermentation performance and intracellular metabolite patterns in laboratory and industrial xylose-fermenting Saccharomyces cerevisiae.}},
url = {{http://dx.doi.org/10.1007/s00253-002-1056-y}},
doi = {{10.1007/s00253-002-1056-y}},
volume = {{59}},
year = {{2002}},
}