PROCESS FOR THE RECOVERY OF CRYSTALLINE BETA-CAROTENE FROM A NATURAL SOURCE
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United States of America Patent
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Issued Date -
Feb 28, 2002
app pub date -
Jan 9, 1999
filing date -
Jul 19, 1996
priority date (Note) -
Abandoned
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Abstract
The present invention describes a process to recover highly pure .sup.2-carotene crystals from a crude crystal preparation obtained from a natural source. To remove impurities, the crude crystals are stirred in a solvent in which .sup.2-carotene has a low solubility, whereupon the crystals are filtered off and washed with fresh solvent. Using the process of the invention, a natural crystalline .sup.2-carotene preparation with a very high purity is obtained, a purity comparable to that of synthetic .sup.2-carotene.
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