Acidothermus celluloyticus xylanase

a technology of xylanase and acidothermus, which is applied in the field of xylanases, can solve the problems of breaking down lignocellulose, being easily subjected to bacterial contamination, and the production of xylanase enzymes being thermally unstable,
US20100184161A1Inactive Publication Date: 2010-07-22RGT UNIV OF CALIFORNIA
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
RGT UNIV OF CALIFORNIA
Publication Date
2010-07-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A thermophilic endo-beta-1,4-xylanase derived from Acidothermus cellulolyticus is disclosed. The xylanase exhibits xylanase activity at an optimal temperature of 90° C. and an optimal pH range of about 4.5-6.0. The isolated xylanase is useful in the hydrolysis of lignocellulosic material.
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Description

[0001] This application claims the benefit under 35 USC 119(e) of U.S. Provisional Patent Application No. 61 / 203,528, filed Dec. 22, 2008, the disclosure of which is hereby incorporated by reference in its entirety.BACKGROUND

[0002] 1. Field

[0003] The present disclosure relates to xylanases and methods for their expression and use. Specifically, the disclosure is related to a thermophilic xylanase (Xyl-1) and homologs thereof derived from Acidothermus cellulolyticus, and the use of these enzymes in hydrolyzing lignocellulose.

[0004] 2. Related Art

[0005] Lignocellulose is plant biomass composed of cellulose, hemicellulose, and lignin. Lignocellulose serves as an abundant and inexpensive source of fermentable biomass. However, one barrier to the utilization of lignocellulose is the tight crosslinking of the cellulose and hemicellulose to the lignin. Breaking down lignocellulose (i.e. separating cellulose and hemicellulose from lignin) is energy intensive, and thus inefficient. Efficient util...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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