polysaccharide removal

Kathryn Weiss ez045181 at mailbox.ucdavis.edu
Wed Oct 7 12:36:53 EST 1998

Does anyone know of a good, simple method to remove polysaccharides from
plant solutions (grape juice)? I am using the Amido Black assay (Schaffner
& Weissmann, 1973) to measure protein content in wine and grape juices,
but see interference in juice. I think that this is due to the presence of
polysaccharides in the juice. Alcohol precipitation is not an option,
since alcohol would interfere with the Amido Black assay.  Any suggestions?


Kathryn Weiss
Department of Viticulture & Enology
University of California, Davis

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