Study on Extracting Process of Black Rice Pigment

Abstract:

The extracting process of black rice pigment was optimized by orthogonal experiments based on single factor experiments, using absorbance value as the test index. The results indicated that the optimum extraction process of black rice pigment were as follows: water as extraction agent, extraction time 120 min, extraction temperature 30 ℃, ratio of liquid to solid 25∶1, and the absorbance of black rice pigment was 0.545. The sequence of each factor on the test effect was: extraction time ＞temperature ＞liquid-solid ratio.