发明名称 |
MODIFICATION OF XYLAN |
摘要 |
The invention provides a method of modifying soluble xylan which contains glucuronic acid and/or arabinose side chains so that it can be adsorbed onto other substrates. The method includes the steps of enzymatically modifying the xylan by selectively removing glucuronic acid and/or arabinose side chains from the xylan with alpha-D-glucuronidase and/or alpha-L-arabinofuranosidase, and allowing the modified xylan to adsorb onto the substrate. The substrate may be a cellulosic substrate like pulp or paper or a non-cellulosic substrate. The enzymes are able to remove a sufficient number of the xylan side chains so as to decrease water solubility of the xylan, induce xylan precipitation and allow adsorption of the xylan onto other substrates. A pulping process which incorporates modification of xylan and adsorption onto cellulosic material is also provided, as are products which contain the modified xylan. |
申请公布号 |
EP2580249(A1) |
申请公布日期 |
2013.04.17 |
申请号 |
EP20110792012 |
申请日期 |
2011.06.07 |
申请人 |
STELLENBOSCH UNIVERSITY |
发明人 |
VAN ZYL, WILLEM, HEBER;CHIMPHANGO, ANNIE, FABIAN, ABEL;GOERGENS, JOHANN, FERDINAND |
分类号 |
C08B37/14;C09D105/14;C12P19/04;D21H11/20 |
主分类号 |
C08B37/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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