Process for preparing high purity corosolic acid and high purity ursolic acid
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United States of America Patent
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Jan 24, 2012
Grant Date -
Nov 5, 2009
app pub date -
Dec 27, 2007
filing date -
Apr 4, 2007
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Abstract
According to the present invention, there is provided a process for preparing corosolic acid comprising the steps of (1) dissolving crude extract of Japanese loquat leaves in alkali and aqueous alcohol and (2) applying the solution to a nonpolar adsorption resin to obtain corosolic acid.
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