Extraction of curculin from plant bodies using aqueous acidic solution

摘要

An aqueous acid solution is added to plant material containing curculin to thereby adjust the pH of the resulting mixture to 3 or below and then the curculin is extracted. Alternately, an aqueous acid solution is added to curculin-containing plant material and the resulting mixture treated under such conditions as to give a pH value of 1.8 to 4.0, followed by extraction of the curculin. Extraction is effected with the use of an aqueous solution of a salt of concentration 0.01 M or above.