عزل صبغات طبيعية من نباتي الكركم (Curcuma longa) والسماق (Sumac) واستخدامها كدلائل حامض – قاعدة وككواشف طبيعية

Abstract

In this report, some of the natural dyes were isolated from Curcuma longa and Sumac plants. These isolated natural dyes were used as acid-base indicators. A comparison with the common indicators (methyl orange and phenolphthalein). The results showed compatibility in the extent of the color range. Also, the isolated extract was used to prepare paper chromatography (PC) similar to Litmus paper. This report also included the study of the IR spectrum for the isolated active materials from Curcuma longa and Sumac plants.