Abstract:
This research was to develop the product using D - phase form which used an oil in water
(O/W) emulsion process and had the inner phase high amount than the general O/W. It was sticky but can be washed off with water and had the ability to penetrate the skin well. Therefore, this technique was used to develop capsicum spp. extract gel for muscular pain relievers. The research was to analyze and select a stable gel formula. In addition, we also investigated the amount of capsaicin in the placenta of Capsicum frutescens L. The D - phase method that was prepared in this study using nonionic surfactant and polyol such as glycerin, decaglyn and oil mixed together.
The method started with gradually dropping oil into the polyol phase that was blended with a lowspeed blender. The result was a clear gel that had transparent property. After that, the gel can be diluted by water phase until getting the desired emulsion. The results revealed that the amount of capsaicin in the yellowish green, orange, and red exocarp placenta equaled to 11.74, 11.71, 0.00, 60.72, 22.23 and 12.64 % w/w, respectively. The results of the development of the five formulas of D - Phase gel revealed that four formulas which do not show phase separation were formulas subjected for physical stability 1, 2 and 5. After that, three gel formulas were subjected for physical stability testing at 4, 25 and 45oC (Freeze and Thaw cycle), and it was found that all three formulas were stable. For dye testing of D - Phase gel formula with oil and water-soluble
dyes, it was found that the dyes were immersed in right phase that was able to indicate the oil in water emulsion. When it was left at room temperature for a period of 1 month, the result showed that the fifth formula had no physical changes