Ultrasonic application to the preparation of hydrophobic black rice pigment;

The hydrophobic black rice pigment was prepared by the water-soluble black rice pigment esterified by acetic anhydride through ultrasonic,the effects of water bath temperature,ultrasonic time and the feed liquid ratio of soluble black rice pigment to acetic anhydride on its esterification degree and color value were studied.

The hydrophobic gardenia blue pigment was prepared with the water-soluble gardenia blue pigment esterified by acetic anhydride,and catalyzed by hydrochloric acid.

Technology for extraction and refinment of black rice pigment;

FTIR Spectra Analysis of Self-Prepared Black Rice Pigment;

STUDY ON THE PROPERTIES AND PHOTO PROTECTIVEAGENT OF BLACK RICE PIGMENT;