Yes, we have analysed the product. It is about 95% arabinoxylan. The main impurities are ash and protein (plus a few percent water). Your low value with acid hydrolysis is undoubtedly due to the conversion of the pentose sugars to furfural during the acid hydrolysis. This is a problem with acid hydrolysis of these types of polysaccharides.
I found only 64% pentosan when I performed sulphuric acid hydrolysis on the product rye flour arabinoxylan (P-RAXY). Some sugars may have been destroyed in the hydrolysis. Have you anlaysed the sugar composition of your product?
Modified on: Tue, 22 Mar, 2016 at 12:55 PM
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