초록
<P>Agricultural lignocellulose biomass generally contains certain amounts of water-soluble carbohydrates (WSC) such as glucose, fructose, or sucrose. These sugars are generally degraded in pretreatment at high temperature or discharged with wastewater in a detoxification process. This study proposed an approach of utilizing frequently ignored water-soluble carbohydrates for promotion of cellulosic <SMALL>L</SMALL>-lactic acid production. A simple solid state fermentation was performed during a corn stover storage period to convert the sugars into <SMALL>L</SMALL>-lactic acid and then a dry biorefining technology was applied to convert cellulose and hemicellulose fractions into the same <SMALL>L</SMALL>-lactic acid product. The 5-hydroxymethylfurfural (HMF) formation in pretreatment was significantly reduced and the consequent biodetoxification time was shortened. <SMALL>L</SMALL>-Lactic acid production was increased from 130.2 g/L to 139.0 g/L, and the minimum <SMALL>L</SMALL>-lactic acid selling price was reduced by 5.9%. This study provided an important option of biorefinery processing technology for production of value added biochemicals.</P><BR>[FIG OMISSION]</BR>