| 摘要 |
NEW MATERIAL:A compound of the formula [R1 and R2 represent a combination selected from: CGCG and CGCG, CGCG and CG, CGCG and CGC, CGC and CG, CGC and CGC, and CGC and C (C is p-coumaric acid; G is D-glucose)]. USE:A natural blue pigment, extremely highly stable. PREPARATION:The blue petals of Clitoria ternatea are extracted with water and the resulting crude liquid extract is put to a combination of reversed phase chromatography, paper chromatography, adsorption chromatography, etc., to separate the objective compound. In particular, it is preferably that the HPLC with a reversed phase column using the Strack solvent system be used. |
