Effective processes are provided for the production of xylitol and ethanol
and other products from solutions derived from lignocellulose-containing
material in biomass. The solutions can be hydrolyzed or partially
hydrolyzed before being fermented with microbes. The fermented solution
can be distilled and can be subsequently separated, such as, by
chromatographic separation, membrane separation, etc. The recovered
xylitol solution can be crystallized to provide pure xylitol crystals.