| 摘要 |
PURPOSE:To produce refined cacao pigment having extremely low ill taste and odor, easily, by concentrating the extract liquid of cacao husk pigment with an ultrafiltration membrane, thereby removing theobromine, etc. from the extract. CONSTITUTION:1pt. of cacao husk is added with about 5-10pts. of deionized water, boiled preferably at >=7pH, and cooled to separate into the liquid (containing gum) and the insoluble component. The liquid part is discarded. The obtained insoluble component is washed thoroughly with water, added with about 5-10 times volume of deionized water, adjusted to >=8pH with an alkali, heated for about 1-24hr, cooled, and separated into the pigment extract liquid and the residue by centrifugal separation, etc. The obtained pigment extract liquid is concentrated by the ultrafiltration at a critical molecular weight of about 2,000- 10,000 to transmit theobromine to the filtrate and obtain the objective refined cacao pigment. |
