Ultraviolet (UV) rays as a sun light can gaves risk of causing; pigmentation
effect, premature aging, although skin cancer. This research was conducted by
utilizing 70% ethanol extract and purified mahogany seed extract (Swietenia
Mahagoni Jacq.). The research was conducted to determine the total phenolic content
by reacting the sample solution with the folin-ciocalteu reagent and measuring the
absorbance value at a maximum wavelength of 749 nm. The measurement of SPF
value is carried out according to the Mansur equation whose absorbance is measured
at a wavelength of 290-320 nm. In this study phytochemical screening was
conducted to determine the compounds contained in the extracts and purified extracts
of mahogany seeds. The results obtained from calculating TPC (Total Phenolic
Content) in ethanol extract were 1.849 mg GEA/gram, and 2.517 mg GEA/gram in
purified extract. SPF value obtained with a concentration of 200ppm in ethanol
extract was 0.66 ± 0.008918, while the SPF value of purified extract was 1.18 ±
0.009386. Phytochemical screening results and purified mahogany seed extracts
showed that positively contained alkaloid compounds, polyphenols / tannins,
flavonoids, terpenoids, and saponins.