Method for Preparing Glucans Based on Aspergillus niger
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United States of America Patent
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Issued Date -
Aug 7, 2014
app pub date -
Oct 11, 2012
filing date -
Oct 11, 2011
priority date (Note) -
Abandoned
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Abstract
This application concerns a method for preparing glucan from Aspergillus niger, characterised in that it comprises (i) the at least partial deacetylation of the mycelium of A. niger; (ii) acid treatment of the (partially) deacetylated mycelium, preferably following purification and/or washing, to obtain insoluble glucan and soluble chitosane, which acid treatment comprises placing the deacetylated mycelium in contact with an acidic solution; (iii) the separation of the soluble chitosan on the one hand, and the insoluble glucan on the other; (iv) alkaline treatment of the glucan comprising placing the glucan in contact with an alkaline solution to cause the glucans to flocculate; and (v) drying the flocculated glucans to obtain glucan powder.
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