Process of recovering lactose from whey

Details Process of recovering lactose from whey Process of recovering lactose from whey

1988-10-12

1990-09-11

Pak, Chung K.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 462, 127 463, 127 48, 127 55, 127 56, 127 58, 127 61, 127 31, 530417, 530419, 530366, 426271, C13F 104, C13F 112, C13D 314, C13D 316

Patent

active

049553631

ABSTRACT:
A method of recovering lactose from milk whey or cheese whey with a high yield, wherein the whey is concentrated, part of the lactose is crystallized, and the crystals are separated and dried; the mother liquor is purified by heating it to about 60.degree. to 70.degree. C. at a pH of about 5.8 to 7.0 and by removing the resultant precipitate by centrifugation; the purified mother liquor is fractionated chromatographically, using sulphonated polystyrene resin which is in sodium ion form and cross-linked by a 3-6% per weight divinylbenzene and which is even-grained, the flow rate is about 0.4 to 1.5 m.sup.3 /h, the temperature about 50.degree. to 75.degree. C., and the pH about 5.5 to 7; whereafter elution is carried out with water, and the following fractions are recovered: a protein fraction which may also contain salts, an intermediate fraction which is recirculated to the fractionating step, and a lactose fraction which is passed to the crystallization step.

REFERENCES:
patent: 2116931 (1938-03-01), Leviton
patent: 2778750 (1957-01-01), Hull
patent: 4316749 (1982-02-01), Evans et al.
patent: 4820348 (1989-04-01), Harju
Von E. Berghofer and A. Scheibl-Technishce Fraktionierung von Molke durch Lonenaustaucher-Chromatographie. I. Literaturubersicht, pp. 700-703.
Von E. Berghofer and A. Scheibl-Technische Fraktionierung von Molke durch Lonenaustauscher-Chromatographic, II, Versuche, pp. 774-779.

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