Fig. 3From: Self-microemulsifying system of an ethanolic extract of Heliopsis longipes root for enhanced solubility and release of affininA Concentration of affinin in the ethanolic extract of H. longipes root. B Droplet size of HLSMDS. Both A and B, in two solutions at different pH values through time, at a constant temperature of 25 °C and stirring at 200 rpm. Data expressed as mean ± SEM (n = 3)Back to article page