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Production of yeast SCP from corn stover hydrolysates

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Abstract

The relative ease with which the hemicellulose component present in agricultural residues are hydrolyzed makes these raw materials attractive sources of sugars for the production of SCP. Corn stover has been selected for this study as a representative of a wide variety of crop residues of potential interest. The hydrolysates obtained by treating this material with dilute acid solutions were supplemented with non-carbon nutrients and the mixture of pentoses and hexoses converted into yeast biomass by a strain of Candida utilis in submerged cultivation. To be economically attractive mild hydrolysis conditions were considered although incomplete hydrolysis to monosaccharides were obtained. The performance of the fermentation has been studied in batch as well as in continuous systems. High efficiency of substrate utilization and protein productivity were obtained with a special yeast strain (CMI-23311) compared to the one (ATCC-9226) commonly studied as SCP source.

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Authors and Affiliations

  1. Biochemical Bioengineering Group Department of Chemical Engineering, University of Waterloo, N2L 3G1, Waterloo, Ontario, Canada

    A. Gonzalez-Valdes & M. Moo-Young

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  1. A. Gonzalez-Valdes
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  2. M. Moo-Young
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Gonzalez-Valdes, A., Moo-Young, M. Production of yeast SCP from corn stover hydrolysates. Biotechnol Lett 3, 143–148 (1981). https://doi.org/10.1007/BF00127367

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  • DOI: https://doi.org/10.1007/BF00127367

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