Abstract:
The objectives of this study were to investigate the property of mangosteen peel powder and to utilize mangosteen peel powder in compact powder. In this study, 1000 g of mangosteen peel at color level 5 was dried and grinded into powder. The percent yield was 45.58%, of its fresh weight. The parameters of color, physical appearances, particle shapes, color bleeding and stability were studied. The color of mangosteen peel powder was brown color with plate-liked shape under light microscope.
Color bleeding test was evaluated in water and squalane to imitate sweat and sebum. Ethanol (95%) was used as a control. The results revealed that mangosteen peel color was bled into water but not squalane. For stability study, mangosteen peel powder was kept at different conditions. They were 25๐C, Ambient, 50 ๐C and Neon. After 28 days, we found that the mangosteeen peel was stable at 25 ๐C, Ambient and 50 ๐C. However, the color of mangosteen peel powder was darker at neon condition. After that, mangosteen peel powder was incorporated into compact powder, at different concentration levels from 2.5%-25% by weight. The formula that contained 2.5% of mangosteen peel powder was the most suitable among the test samples. This formula was further studied for its stability. The stability of this formula was studied in 4 conditions. They were 25 ๐C, Ambient, 50 ๐C and Neon. After 28 days, we found that the mangosteeen peel was stable at 25 ๐C, Ambient and 50 ๐C. However, the color of the formula was darker at neon condition. This was similar to mangosteen peel powder.
Preference test was further conducted in 30 volunteers. The formula containing 2.5% and 15% of mangosteen peel powder was selected. The preferences of these formulas were compared with the formula that contained iron oxides that had similar color. The results revealed that the preference scores of the formula containing mangosteen peel powder and iron oxides is comparable and the volunteers were more mangosteen peel powder satisfied with the formula containing 2.5% than 15%
The results suggested that mangosteen peel powder could be able to use as a coloring agent in cosmetic and can be use instead of iron oxides.