Method for the purification of sucrose esters of fatty acids
Abstract
Abstract THE PROCESS FOR THE PURIFICATION OF SUCROSE ESTERS OF FATTY ACIDS FROM CRUDE REACTION MIXTURES OR THE LIKE COMPOSITIONS CONTAINING SUCH SUCROSE ESTERS COMPRISES THE STEPS OF DISSOLVING THE CRUDE REACTION MIXTURE OR THE LIKE IN A SOLUTION OF THE MIXTURE OF AN ORGANIC SOLVENT WITH WATER TO FORM A SYSTEM AND REMOVING IMPURITIES CONTAINED IN SAID CRUDE REACTION MIXTURE OR THE LIKE DISSOLVED IN SAID SOLUTION BY CARRYING OUT ANY ONE OF THE FOLLOWING TREATMENTS OR THEIR COMBINATIONS: (A) ADDING TO THE SYSTEM AN ACID OR AN ACID SALT IN AN AMOUNT NECESSARY TO ACIDIFY SAID SYSTEM SO AS TO HAVE A PH VALUE WITHIN THE RANGE OF 3.5 TO 5.0, WHEREBY THE SUCROSE ESTER IS RECOVERED BY A LIQUID-LIQUID EXTRACTION OPERATION; (B) ADDING TO SAID SYSTEM A SALT OF A METAL WHOSE VALENCE IS AT LEAST TWO TO FORM DOUBLE DECOMPOSITION SALTS, AND THEN REMOVING SAID DOUBLE DECOMPOSITION SALTS TO RECOVER THE SUCROSE ESTER; AND (C) ADDING TO SAID SYSTEM A WATER SOLUBLE SUBSTANCE TO RECOVER THE SUCROSE ESTER BY PRECIPITATION.
Inventors
- 👤 N Mizutani
- 👤 I Sasaki
- 👤 S Nishizaki
- 👤 T Ishizuka
- 👤 T Ito
- 👤 H Ueno
Bibliographic Details
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