INFLUENCE OF MAGNESIUM CONCENTRATION ON GROWTH, ETHANOL AND XYLITOL PRODUCTION BY PICHIA-STIPITIS NRRL Y-7124

Authors
MAHLER GF GUEBEL DV
Citation
Gf. Mahler et Dv. Guebel, INFLUENCE OF MAGNESIUM CONCENTRATION ON GROWTH, ETHANOL AND XYLITOL PRODUCTION BY PICHIA-STIPITIS NRRL Y-7124, Biotechnology letters, 16(4), 1994, pp. 407-412
Citations number
14
Categorie Soggetti
Biothechnology & Applied Migrobiology
Journal title
Biotechnology letters → ACNP
ISSN journal
01415492
Volume
16
Issue
4
Year of publication
1994
Pages
407 - 412
Database
ISI
SICI code
0141-5492(1994)16:4<407:IOMCOG>2.0.ZU;2-A
Abstract
The effect of Mg on Pichia stipitis growth and ethanol production was studied under condition of constant oxygen uptake rate (OUR). Biomass/ xylose and biomass/Mg+2 yields increased with Mg+2 concentration with a maximum value at Mg+2 4mM, ethanol being the main product obtained. At low Mg+2 levels (ImM) 49 % of carbon flux to ethanol was redirected to xylitol production, accomplished through NADH intracellular accumu lation.