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Enzymic preparation of water-soluble chitosan and their antitumor activity

Water-soluble low-molecular-weight (LMW) chitosan was prepared from enzymatic hydrolysis with efficient hemicellulase. The hydrolysates were separated by ultrafiltration membranes. A separated fraction with Mw more than 5/103 and with a degree of deacetylation of 58% was water-soluble in the free amine form.

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