Abstract
A brewery spent-grain hemicellulosic hydrolysate was used for xylitol production by Debaryomyces hansenii. Addition of 6 g yeast extract/l increased the xylitol yield to 0.57 g/g, and productivity to 0.51 g/l h that were, respectively, 1.4 -and 1.8-times higher than the values obtained with non-supplemented hydrolysate. When corn steep liquor was combined with 3 g yeast extract/l, the highest xylitol yield, 0.58 g/g, was obtained with a similar productivity.
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Acknowledgment
The authors wish to thank Sociedade Central de Cervejas e Bebidas, for kindly providing the feedstock.
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Carvalheiro, F., Duarte, L.C., Medeiros, R. et al. Xylitol production by Debaryomyces hansenii in brewery spent grain dilute-acid hydrolysate: effect of supplementation. Biotechnol Lett 29, 1887–1891 (2007). https://doi.org/10.1007/s10529-007-9468-5
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DOI: https://doi.org/10.1007/s10529-007-9468-5