Method for isolating and purifying antibiotics

Details Method for isolating and purifying antibiotics Method for isolating and purifying antibiotics

1984-05-11

1986-04-08

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602391, 2603516, 536 14, 536 169, 536 22, 544 20, 549345, 549349, 560188, C07K 114, C07D49918, C07D50112, C07D30794, C07H 1522, C07C 6758

Patent

active

045811660

ABSTRACT:
A process is proposed for the isolation and purification of antibiotics wherein an antibiotic containing solution is extracted with an extraction agent at a temperature of from 0.degree. to 40.degree. C. and at a pressure which lies between the critical pressure and the ten-fold value of the critical pressure of the extraction agent, with the weight ratio of antibiotic containing solution to the extraction agent being 1:5 to 1:20, wherein the antibiotics are precipitated from the antibiotic containing extraction agent by reducing its density and wherein the extraction agent is recirculated. An entrainer may be added to the extraction agent. The reduction in density of the antibiotic containing extraction agent may be effected by expansion to a pressure of from 30 to 70 bar.

REFERENCES:
patent: 3969196 (1976-07-01), Zosel
patent: 4089891 (1978-05-01), Knauseder et al.
patent: 4354971 (1982-10-01), Edmundowicz et al.

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