Fermentable sugars by chemical hydrolysis of biomass
Fermentable sugars by chemical hydrolysis of biomass
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DOI：
10.1073/pnas.0912073107
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发表时间：
2010-03-09
影响因子：
11.1
通讯作者：
Raines, Ronald T.
中科院分区：
文献类型：
--
作者：
Binder, Joseph B.;Raines, Ronald T.
丰富的植物生物质有可能成为燃料和化学品的可持续来源。实现这一潜力需要将柠檬酸木质纤维素经济地转化为有用的中间体，如糖。我们报道了一种高产率的化学方法，用于将生物质水解成单糖。将水逐渐加入到含氯化物离子液体的催化酸中导致从纤维素得到近90%的葡萄糖产率和从未处理的玉米秸秆得到70-80%的糖产率。离子排阻色谱法允许回收离子液体并递送支持产乙醇微生物的旺盛生长的糖原料。这种简单的化学过程既不需要可食用植物，也不需要纤维素酶，可以使粗生物质成为可扩展的生物精炼厂的唯一碳源。
Abundant plant biomass has the potential to become a sustainable source of fuels and chemicals. Realizing this potential requires the economical conversion of recalcitrant lignocellulose into useful intermediates, such as sugars. We report a high-yielding chemical process for the hydrolysis of biomass into monosaccharides. Adding water gradually to a chloride ionic liquid-containing catalytic acid leads to a nearly 90% yield of glucose from cellulose and 70-80% yield of sugars from untreated corn stover. Ion-exclusion chromatography allows recovery of the ionic liquid and delivers sugar feedstocks that support the vigorous growth of ethanologenic microbes. This simple chemical process, which requires neither an edible plant nor a cellulase, could enable crude biomass to be the sole source of carbon for a scalable biorefinery.