Production of water-soluble chitin-oligomers by partial...

Details Production of water-soluble chitin-oligomers by partial... Production of water-soluble chitin-oligomers by partial...

C - Chemistry, Metallurgy

08

B

204/91

C08B 37/08 (2006.01) C07H 3/06 (2006.01) C07H 5/06 (2006.01)

Patent

CA 1297832

PRODUCTION OF WATER-SOLUBLE CHITIN-OLIGOMERS BY PARTIAL HYDROLYSIS OF CHITIN ABSTRACT OF THE DISCLOSURE- Tetra-N-acetyl-chitotetraose, penta-N-acetyl- chitopentaose and hexa-N-acetyl-chitohexaose, ones of the water-soluble chitin-oligomers, may be obtained in improved yields, when finely ground chitin is quickly and intimately mixed with a concentrated hydrohalogenic acid containing a particular proportion of the hydrogen halide per a unit quantity of the chitin under the irradiation with ultrasonic waves and also under the agitation by mechanical stirrer, followed by hydrolyzing the chitin in the resulting homogeneous mixture com- prising the chitin and the concentrated hydrohalogenic acid while said homogeneous mixture is further con- tinuously irradiated with the ultrasonic waves and also agitated by the mechanical stirrer. From the aqueous phase of the hydrolyzed reaction mixture are recovered the desired water-soluble chitin-oligomers which are each useful as an immunopotentiating, antitumor agent or antifungal, antibacterial agent.

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