Method for continuously purifying pullulan

Details Method for continuously purifying pullulan Method for continuously purifying pullulan

1975-02-14

1976-05-25

Wolk, Morris O.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

195 31R, 195 31P, 195119, 260209R, 4236585, C12D 1304, C13L 300

Patent

active

039590097

ABSTRACT:
A continuous method for purifying pullulan characterized in that two or more tanks containing aqueous solvent solutions of different concentrations are installed in a series wherein the solvent concentrations are always kept lower than the one following, and comprising successively ejecting an aqueous pullulan solution into the first tank to form a mixture wherein pullulan particles are suspended keeping the aqueous solvent solution constantly at a higher concentration than that necessary for precipitating the pullulan particles, separating the pullulan particle suspension from the mixture, transferring the separated pullulan particle suspension into an adjoining tank, repeating such steps, at least once, to dehydrate the pullulan particles and then successively recovering the dehydrated pullulan in a power form from the last tank.

REFERENCES:
patent: 3827937 (1974-08-01), Kato
patent: 3870537 (1975-03-01), Hijiya

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