Antisickling Activity and Thermostability of Anthocyanins Extract from a Congolese Plant, Hymenocardia acida Tul. (Hymenocardiaceae)

摘要

Antisickling activity of anthocyanins extract from a Congolese plant (Hymenocardia acida Tul.) was evaluated using Emmel test. Chromatographic separations using chloroform-benzene (2:1) provided three fractions Als A2 and A_3 with the most polar [A_1(TLC, R_f = 0.21)] exhibiting the highest activity. Thermal kinetic degradation of this fraction at 100 and 120degC produced a first order rate constants k = 2.64x10~-4 and 4.08xl0~-4, respectively. Structural