SUGAR PRODUCTION PROCESS AND ETHANOL PRODUCTION PROCESS
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United States of America Patent
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Issued Date -
Aug 25, 2011
app pub date -
Oct 29, 2009
filing date -
Oct 30, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention provides a pretreatment method which enables the promotion of the enzymatic glycosylation of lignocellulose under relatively mild conditions by using a tree bark as a raw material with less energy. Specifically the present invention provides a step for producing a sugar from a tree bark, which is characterized by having the following steps: an alkali treatment step of immersing the tree bark in an alkali compound solution; a refining treatment step of refining the alkali treated tree bark mechanically into fine pieces; and an enzymatic glycosylation step of glycosylating the refined tree bark with an enzyme. The present invention also provides a method of producing an ethanol.
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