| 摘要 |
NEW MATERIAL:A purple pigment consisting of a cyanidin derivative expressed by the formula obtained from a tissue or cell of Euphorbia millii Ch. des Moulins of the genus Euphorbia plant. USE:A coloring agent for food, cosmetic, etc. PREPARATION:For example, a leaf of Euphorbia millii Ch. of the genus Euphorbia plant is washed and cut and after the piece of the leaf is sterilized, the piece is aseptically put in a synthetic agar medium and cultivated under light irradiation. Then the cultured cell of the Euphorbia millii Ch. propagated by the culture is separated from the solid medium and subjected to vacuum lyophilization to provide a dried callus, which is then ground and extracted with methanol and the extract liquid is subjected to filtration, concentration and further extraction with ether and the extract liquid is concentrated under reduced pressure to dryness to afford the compound expressed by the formula. |
