Carvalheiro Florbela, Duarte Luís C, Medeiros Raquel, Gírio Francisco M
Departamento de Biotecnologia, INETI, Estrada do Paço do Lumiar 22, Lisboa, 1649-038, Portugal.
Biotechnol Lett. 2007 Dec;29(12):1887-91. doi: 10.1007/s10529-007-9468-5. Epub 2007 Jul 17.
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.
一家啤酒厂的废谷物半纤维素水解产物被用于汉逊德巴利酵母生产木糖醇。添加6 g/L酵母提取物可使木糖醇产量提高到0.57 g/g，生产率提高到0.51 g/(L·h)，分别比未添加水解产物时获得的值高出1.4倍和1.8倍。当玉米浆与3 g/L酵母提取物混合使用时，可获得最高的木糖醇产量0.58 g/g，且生产率相近。
