Production of water-soluble chitin-oligomers by partial hydrolys

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

1986-12-11

1989-02-14

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 552, 536124, 106203, C08B 3708, C08L 100

Patent

active

048047503

ABSTRACT:
Tetra-N-acetyl-chitotetraose, penta-N-acetylchitopentaose 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 comprising the chitin and the concentrated hydrohalogenic acid while said homogeneous mixture is further continuously 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.

REFERENCES:
patent: 3989535 (1976-11-01), Capozza
patent: 4424346 (1984-01-01), Hall et al.
patent: 4436731 (1984-03-01), Maltz
patent: 4532321 (1985-07-01), Castle et al.
Journal of Chemical Soc., section C, 1970, pp. 1654-1655, "The Preparation of Chitin Oligosaccharides".

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