METHOD OF PRODUCING A HYDROGEL
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United States of America Patent
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Issued Date -
Apr 11, 2013
app pub date -
Jun 7, 2011
filing date -
Jun 8, 2010
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Abandoned
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Abstract
The invention provides a method of enzymatically modifying xylan by selectively removing glucuronic acid and/or arabinose side chains from the xylan with a-D-glucuronidase and/or a-L-arabinofuranosidase, and allowing the modified xylan to form into a hydrogel when the xylan becomes insoluble. A bioactive substance, such as a protein, enzyme, antimicrobial agent, bactericide or pharmaceutical compound can be added to the xylan so that the substance is encapsulated within the hydrogel or incorporated onto its surface. The hydrogel can be used as a drug delivery agent, such as for sustained-release or targeted drug delivery, rectal drug delivery or a dressing for a wound, burn or scar. The hydrogel can also be used as a coating, such as on medical gloves, catheters, surgical drainage systems, utensils or the like, or can be used in a scaffold for tissue engineering.
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