صبغة الأنثوسيانين الطبيعية تضاهي الصبغات الكيميائية

Abstract EN

In this study we used distilled water to extract pigment anthocyanin from seeds of the pomegranate and violet cabbage leaves because the water does not have any toxic effect, their evaporates happened at low temperatures, and without influence on the chemical composition of the extracted dye.

It was found that the red dye extracted from the pomegranate had an acidic medium (pH 3.0), while the violet dye extracted from the cabbage leaves had a light acid medium (pH 6).

The amount of dye in the juice of both plants after dropping the absorbance value of each on the curve of standard solutions was 310 and 50 0mg/ 100 ml of juice from each plant, respectively.

This dye, with its red and violet colors, succeeded in dyeing bacterial smears, animal, and plant tissue sections, with iodine and copper sulfate fixers respectively, and in a way similar compared to conventional chemical dyes.

It was also an effective dye in the dyed cotton and wool fabrics well with lemon juice and baking soda as add fixative.