Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB9701/51A
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KNUD ABILDGAARD ELLING
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KNUD ABILDGAARD ELLING
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Application filed by KNUD ABILDGAARD ELLINGfiledCriticalKNUD ABILDGAARD ELLING
Publication of GB684460ApublicationCriticalpatent/GB684460A/en
Antibiotics of acid form, e.g. penicillin, which may be isolated from aqueous substrata or solutions containing them by acidifying, extracting the acidified product with an organic solvent and the organic extract with an aqueous buffer solution, which operations may be repeated if desired, are isolated by such methods using for acidification an aqueous solution of an acid salt of sulphuric acid, e.g. sodium hydrogen sulphate. According to the example, a penicillin solution is acidified to a pH 2.2 by the addition of 4.3 molar aqueous acid sodium sulphate and then extracted with amyl acetate.
GB9701/51A1950-06-171951-04-25Method for recovering or concentrating antibiotic substances
ExpiredGB684460A
(en)