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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Della Rosalynna Stiadi
Universitas Negeri Padang
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SKRINING FITOKIMIA EKSTRAK DAUN DAN RANTING GLODOKAN TIANG (Polyalthia longifolia L.) Yunita; Nadiaro Risky Nasution; Rozalia; Musfirah Handayani; Desy Kurniawati; Della Rosalynna Stiadi
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 3 (2026): Volume 12 No. 3, September 2026 Release
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i3.16624

Abstract

This study aimed to identify the secondary metabolite compounds present in leaf and twig extracts of glodokan tiang (Polyalthia longifolia L.) using phytochemical screening and Fourier Transform Infrared (FTIR) analysis. Dried, powdered samples were extracted by maceration with ethyl acetate and 96% ethanol. The extects were qualitatively screened for steroids, terpenoids, alkaloids, phenolics, flaavonoids, and saponins. FTIR analysis (4000-450 cm-1) was used to identify functional groups. Both leaf and twig extracts contained various secondary metabolites, with 96% ethanol extracts showing a broader range of compounds than ethyl acetate extracts. Ethanol leaf extract tested positive for steroids, terpenoids, alkaloids, flavonoids, and saponins. FTIR spectra confirmed the presence of O-H, C-H, C=O, and C-O functional groups, supporting the existence of bioactive secondary metabolites. These findings indicate that glodokan tiang leaves and twigs are promising natural sources of bioactive compounds, and that 96% ethanol is a more effective solvent for extracting secondary metabolites.
Co-Authors Desy Kurniawati Musfirah Handayani Nadiaro Risky Nasution Rozalia Yunita