Paprica oleoresin extracted with the solvent of acetone could be depepperized and the red pigment without pungent taste was obtained by 6 times of extraction with alkaline acetone (50%) solution.

• 对以丙酮为溶剂提取制得的辣椒油树脂，经50%25丙酮的碱性溶液洗涤6次即可脱除辣味得到无辣味红色素。