期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 66, 期 39, 页码 10225-10232出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.8b03592
关键词
lignocellulose; water-soluble carbohydrates; L-lactic acid; solid state fermentation; simultaneous saccharification and cofermentation; techno-economic analysis
资金
- National Key Research and Development Program of China [2017YFB0309302]
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 L-lactic acid production. A simple solid state fermentation was performed during a corn stover storage period to convert the sugars into L-lactic acid and then a dry biorefining technology was applied to convert cellulose and hemicellulose fractions into the same L-lactic acid product. The 5-hydroxymethylfurfural (HMF) formation in pretreatment was significantly reduced and the consequent biodetoxification time was shortened. L-Lactic acid production was increased from 130.2 g/L to 139.0 g/L, and the minimum L-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.
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