PURPOSE:To obtain purified tamarind kernel powder having high quality and safety, from crude tamarind kernel powder, easily at a low cost, by treating an aqueous dispersion of crude tamarind kernel powder with a proteinase in a specific pH range. CONSTITUTION:Crude tamarind kernel powder can be purified by treating an aqueous dispersion of crude tamarind kernel powder with a proteinase (e.g. trypsin) keeping the pH of the dispersion at 7.5-8.8, preferably 7.9-8.3, at preferably 25-45 deg.C.
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