Effect of Sodium Carbonate on Extraction by Aqueous Decoction of Total Polyphenols from Crushed and Whole Leaves of <i>Combretum micranthum</i>

Sodium bicarbonate is sometimes used to aid in the extraction of total polyphenols. Its main effect increase pH solution. Raising can cause changes chemical structure This lead variations their biological properties, solubility and stability. work studied sodium carbonate on by aqueous decoction polyphenols from leaves Combretum micranthum. The content phenolic compounds extracts was estimated Folin-Ciocalteu method. color samples measured using a colorimeter (type: KONICA MINOLTA. Japan) based CIELAB system. results obtained were subjected one-way ANOVA analysis variance with R software version 3.2.4 Revised (2018) Minitab-18 software. reveal drop concentration extracted proportional addition carbonate, i.e. 3.30 1.04 mg·AG·100 g-1 extract whole 3.921 2.551 crushed leaves. On other hand, intensity coloring increases significantly 0.0 g·L -1 0.666 g·L-1.