Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Kordowska-Wiater M. , Targoński Z. 2001. ETHANOL PRODUCTION ON THE MEDIA CONTAINING GLUCOSE AND XYLOSE BY COCULTURE OF PICHIA STIPITIS CCY 39501 AND RESPIRATORY DEFICIENT MUTANT OF SACCHAROMYCES CEREVISIAE V³⁰, EJPAU 4(2), #15.
Available Online: http://www.ejpau.media.pl/volume4/issue2/food/abs-15.html

ABSTRACT

Coculture of xylose-fermenting yeast P. stipitis CCY 39501 and respiratory deficient mutant of S. cerevisiae V₃₀ designated as V₃₀ I 40 was used for ethanol fermentation on a medium containing glucose and xylose mixture and compared to P. stipitis monoculture or coculture of P. stipitis and S. cerevisiae V₃₀. Batch fermentations were carried out on a model medium or on a medium containing both sugars derived from direct saccharification of either wheat straw or birch sawdust. The yields obtained were 0.38 g/g, 0.34 g/g and 0.4 g/g for model medium, wheat straw and birch sawdust hydrolysates respectively, after cofermentation of P. stipitis with RD mutant V₃₀ I 40. The results confirmed the application of this coculture for ethanol fermentation of sugars derived from lignocellulosic hydrolysates.

Key words: ethanol fermentation, xylose, lignocellulose, SSF, coculture, respiratory deficient mutant of S. cerevisiae, P. stipitis.

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