Farmitalia Carlo Erba

Carlo Varesio

Onorino G Rosa

Ernesto Oppici

Giovanni Lazzari

Ernesto Oppico

Danillo Fabris

Disclosed is a process for purifying an impure anthracyclinone glycoside by selective adsorption of a slightly acidic aqueous solution of an impure glycoside on at least one resin and subsequent de-absorption of the purified glycoside by elution with acidic water or a mixture of water and a polar solvent.

Process for purifying anthracyclinone glycosides by selective adsorption

The invention discloses a method for extracting phenylalanine from the broths obtained by enzymatic processes; this method consists in flocculating and filtering the broth, concentrating the filtrate followed by filtering off the resulting cinnamic acid, decolorating and concentrating the filtrate to obtain phenylalanine crystals at a very pure degree.

Method for extracting phenylalanine from broths of bioconversion

Disclosed is a process for purifying Tylosin by selective adsorption of the fermentation broth previously brought to 7.5-10.0 pH on polymeric resins and by subsequent deadsorption of the purified product with a aqueous-alcoholic or aqueous-acetonic solution and further purification of the eluate by filtration through macroreticular weak anion resins.

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Turin, Italy

Carlo Varesio