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The aim of this research is to determine the total amount of secondary metabolites (alkaloids, flavonoids, saponins and tannins) contained in the ethanol juice of juwet leaves (Syzygium cumini L.) using the UV-Vis spectrophotometry method and to determine the antioxidant activity of the ethanol juice of juwet leaves based on IC50 value. Determination of total levels of secondary metabolites using UV-Vis spectrophotometry and antioxidant testing using the DPPH method. The results of qualitative analysis of the ethanol juice of juwet leaves contained secondary metabolite compounds, namely flavonoids, saponins, tannins and alkaloids. The average value obtained for the level of total secondary metabolites for flavonoid compounds was 0.417% w/w., saponins 0.766 w/w., tannins 0.282 w/w and alkaloids 0.384% w/w. The results of testing the antioxidant activity of juwet leaf ethanol extract and quercetin as a comparison had antioxidant activity, the average IC50 results were 14.289 ± 0.255 ppm and 102.45 ppm, therefore they were classified as moderate antioxidants.

Utilization of natural preparations is a treatment carried out by the community with the aim of improving health status naturally. Traditional medicine has become an alternative for the community due to the relatively high cost of modern medicine. One of the diseases with a high financing burden is kidney disease, which is after heart and blood vessel disease. This study aims to determine the potential of traditional medicinal preparations of Herbal Oil STIFA Pelita Mas on the state of urea and creatinine concentrations in experimental animals, this research used white male rats divided into six treatments. Determination of urea and creatinine levels was carried out starting from days 1, 7, 14, 21 to 28, then normality and homogeneity tests were carried out, and parametric statistics were analyzed using the one-way ANOVA test. The results showed that the administration of STIFA Pelita Mas Herbal Oil in Formula 1, 2, and 3 had urea levels of 42.60 mg/dL, 28.64 mg/dL, and 51.46 mg/dL, respectively. The average values ​​of creatinine in Formula 1, 2, and 3 were 0.73 mg/dL, 0.63 mg/dL, and 0.92 mg/dL, respectively. The administration of Formula 2 was effective in reducing the concentration of urea and creatinine. Pelita Mas herbal oil preparation can be used as a medicine to improve kidney structure.

The snake fruit peel (Salacca zalacca (Gaertn.) Voss) traditionally has several health benefits, one of which is to treat diabetes mellitus. This study aimed to determine the content of secondary metabolites in the ethanolic extract of snake fruit peel and its activity on glucose and urea creatinine levels in male white rats (Rattus norvegicus). Phytochemical screening of extracts was carried out qualitatively and quantitatively using UV-Vis Spectrophotometry. This study is a laboratory experimental study using 30 test animals divided into 6 treatment groups (normal control, negative control, positive control, 70 mg/kg BW, 140 mg/kg BW, and 280 mg/kg BW). The results showed that the ethanol extract of the bark of the salak fruit contained 7.61 %w/w alkaloids, flavonoids 0.041% w/w, tannins 1.18% w/w, and saponins 2% w/w. Ethanol extract of salak fruit peel dose of 140 mg/kg BW affected decreasing blood glucose and urea creatinine levels. The skin of the salak fruit has the potential to be further investigated as an antidiabetic.

This study aims to determine the content and total levels of secondary metabolites of ethanol extract of moringa seed (Moringa oleifera Lam.). Extraction of moringa seed using the maceration method to obtain a filtrate. The filtrate obtained was concentrated using a rotary evaporator to obtain a concentrated extract. The extract was tested qualitatively for alkaloids, flavonoids, saponins, and tannins using a suitable reagent with the test parameters. The quantitative test was using UV-Visible spectrophotometry. Alkaloids using test parameters equivalent total alkaloid quinine, flavonoids use parameter test equivalent of the total flavonoids quercetin, saponin using test parameters from Quillaja total saponins and tannins quantitative bark using test parameters total tannin tannic acid equivalent. The result showed that moringa seed positive for alkaloids characterized by orange deposition, flavonoids are characterized by the formation of the yellow color orange, saponin their stable foam, and tannins are marked in black. Quantitative test results alkaloids of 916,87 µg/g, flavonoids of 0.255%, saponin of 6.367%, and tannin of 3,724.5 µg/g. Keywords: Moringa oleifera Lam., secondary metabolites, spectrophotometry