SUGAR PRODUCTION PROCESS AND ETHANOL PRODUCTION PROCESS
First Claim
1. A method of producing a sugar comprising:
- produces producing sugar from a tree bark;
immersing the tree bark in an alkali compound solution;
mechanically refining the alkali treated tree bark; and
glycosylating the refined tree bark with an enzyme.
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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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Citations
11 Claims
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1. A method of producing a sugar comprising:
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produces producing sugar from a tree bark; immersing the tree bark in an alkali compound solution; mechanically refining the alkali treated tree bark; and glycosylating the refined tree bark with an enzyme. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11)
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3. A method of producing a sugar, comprising:
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refining a tree bark wherein both the tree bark and an alkali compound solution are provided to a kneader, a biaxially extruder, or a biaxially mixer followed by an simultaneous alkali and kneading treatments; and glycosylating the refined tree bark with an enzyme.
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Specification