Faegre Drinker Biddle & Reath LLP
Method for preparing sugar, bioethanol or microbial metabolite from lignocellulosic biomass
The present invention relates to a method for preparing bioethanol from lignocellulosic biomass. The method of the present invention is capable of: minimizing the impurity content of an enzymatic saccharification raw material, by extracting biomass using hot water, before pretreatment, and removing extractable substances such as inorganic salts; suppressing, to the greatest extent, the production of overdecomposition products of sugar, by pretreating the biomass, from which the hot water extractable substances have been removed, in a condition for maximizing xylan yield; preparing fermentable sugar at a low cost, without washing a pretreated solid obtained from subsequent solid-liquid separation, but by only concentrating a sugar solution obtained after enzymatic saccharification, using a separation film; and preparing bioethanol therefrom in high yield.
Korea Research Institute of Chemical Technology
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C12P C07H C12P C12P C12P C13K Y02E C12P C12P C12P C12P C07H
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Chan Duck Ju Hyun In-Chul Bong Keun Seung Hwan Kyung Sik In Yong Jong Geon
Jung Yu Kim Song Lee Hong Eom Jegal