Xylitol production by Debaryomyces hansenii in brewery spent grain dilute-acid hydrolysate: effect of supplementation.
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.
Carvalheiro
Florbela
F
Departamento de Biotecnologia, INETI, Estrada do Paço do Lumiar 22, Lisboa, 1649-038, Portugal.
Duarte
Luís C
LC
Medeiros
Raquel
R
Gírio
Francisco M
FM
D000143:Acids / Q000378:metabolism*; D002523:Edible Grain / Q000378:metabolism*; D006868:Hydrolysis; D007220:Industrial Waste; D011108:Polymers; D004718:Saccharomycetales / Q000378:metabolism*; D014993:Xylitol / Q000096:biosynthesis*; D015003:Yeasts
D000143:Acids; D007220:Industrial Waste; D011108:Polymers; C024617:polyol; D014993:Xylitol