ThesisOpen AccessMetadata saja
2023•Skripsi, Thesis, Disertasi, dan Tugas Akhir
High exposure to free radicals on the skin can cause damage to skin cells or tissues. Damage to cells or tissues in the skin will result in the skin being susceptible to diseases such as autoimmunity, skin cancer, and premature aging. Antioxidants function to protect the body from free radicals, both internally and externally. The part of the body that is often exposed to free radicals externally is the skin, such as ultraviolet radiation and cigarette smoke. One of the plants that has the potential for antioxidant compounds is the seeds of passion fruit. Purple passion fruit seed extract contains flavonoids, tannins, saponins and triterpenoids which are secondary metabolites. The research method included sample preparation,determination, simplicia manufacture, sample extraction using methanol solvent, thickening process by maceration process, phytochemical screening, and testing of antioxidant activity using the DPPH (2,2diphenyl-1-picrylhydrazyl) method by UV-Vis spectrophotometry.
ThesisOpen AccessMetadata saja
2023•Skripsi, Thesis, Disertasi, dan Tugas Akhir
The leaves of the ferns Asplenium nidus L., Asplenium adiantum nigrum L., and Aspidium biserratum Sw. contains secondary metabolites of flavonoids, alkaloids, saponins, tannins, and phenols. Phenolic compounds are the largest secondary metabolites in plants. The benefits of phenolic compounds are as antioxidants and their ability to prevent various diseases such as cancer, anti-inflammatory, anti-microbial and anti-diabetic. The purpose of this study was to compare the total phenolic content of the ethanol extracts of the leaves of the ferns Asplenium nidus L., Asplenium adiantum nigrum L., and Aspidium biserratum Sw. by UV-Vis spectrophotometry method. The research conducted was non-experimental research. The objects studied were the total phenolic content of the ethanol extract of the leaves of the ferns Asplenium nidus L., Asplenium adiantum nigrum L., and Aspidium biserratum Sw. The research phase included plant determination, sample collection, simplicia processing, extract preparation, water content determination, extract phytochemical screening, and phenol content determination using the UV-Vis spectrophotometry method using Folin Ciaocalteau reagent. Total phenol content is expressed in units of mg GAE (gallic acid equivalent)/g extract. The data analysis used in this study used statistics using the one way ANOVA program in the form of the results of testing the total phenolic ethanol extract of the ferns Asplenium nidus L., Asplenium adiantum-ningrum L., and Aspidium biserratum Sw.
