构树果色素的分离提取及部分性质研究

ISOLATION AND PARTIAL CHARACTERIZATION OF A NATURAL PIGMENT FROM THE FRUIT OF BROUSSONETIA PAPYRIFERA

从构树果实中分离提取了一种水溶性桔红色素 ,其紫外吸收特征峰为 2 6 6 nm,2 0 5nm,4 84 nm。色价吸光度 E1%1cm4 84 ≥ 2 3.4。该色素性质稳定 ,耐热 ,耐酸碱 ,但对光敏感。据红外光谱分析及定性实验结果 。

A red pigment was isolated from the fruit of Broussonetia papyrifera. It is soluble in water. The maximum UV absorption peak of the pigment is at 266 nm,205 nm,484 nm and the chromovalency E 1% 1 cm484 ≥23 4. It is relatively stable against heat, acid and alkali, but sensitive to light, By means of IR spectra and qualitative determination, the structure of flavonol is probably similar to the structure of the pigment.