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Phytochemical Screening and Determination of Total Flavonoid Content of Keji Beling Leaves Ethanol Extract (Strobilanthes crispa Bl.) Mahyantika, Seftya Putri; Husain, Muhammad Hafizh; Nirwana, Linggar; Aldina, Devana Rahma; Gemilang, Satria; Nafisa, Nafisa; Ramadhan, Majida; Sjakoer, Nour Athiroh Abdoes; Faisal, Faisal
Biology, Medicine, & Natural Product Chemistry Vol 14, No 1 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.141.219-224

Abstract

This study aims to determine the total flavonoid content in the ethanol extract of keji beling (Strobilanthes crispa) leaves using the UV-Vis spectrophotometric method with AlCl3 reagent. The research process includes maximum wavelength testing, preparation of quercetin standard solution, and analysis of total flavonoid levels. The results showed that the total flavonoid content in the extract was 144.347 ± 134.854 mg QE/g extract, with an extract yield of 0.4% and extract moisture content of 5.256%, which showed good potential in preventing the growth of microorganisms. Phytochemical screening revealed the presence of alkaloids, flavonoids, and tannins, while saponins, triterpenoids, and steroids were not detected. These findings confirm the importance of secondary metabolite compounds in plants and the potential of keji beling leaf extract as a source of active compounds with health benefits, including antioxidant and antibacterial activities. This study provides a basis for further research into the medical applications of this plant extract.
Characterization and Identification of Phytochemical Compounds Soursop Leaf Extract (Annona muricata L.) Amrullah, Kammal Nizam Amrullah; Ma’rifah, Shofia Jannatul; Azizah, Nur; Jamilah, Zahrotul; Safitri, Dewi Astriana; Bawani, Elen Ayu; Ramadhan, Majida; Hayati, Ari; Nafisa; Mahyantika, Seftya Putri
JSMARTech: Journal of Smart Bioprospecting and Technology Vol. 6 No. 2 (2025): Vol. 6 No. 2 (2025): JSMARTech Volume 6, No 2, 2025
Publisher : JSMARTech

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jsmartech.2025.006.02.07

Abstract

Soursop leaves (Annona muricata L.) have long been used in traditional medicine in Indonesia to treat various diseases. This study aimed to characterize and identify phytochemical compounds present in soursop leaf extract. The analysis was carried out using UV-Visible spectrophotometric, FT-IR spectroscopy, and phytochemical screening to identify the presence of bioactive compounds such as alkaloids, flavonoids, and tannins. UV-Visible spectrophotometric analysis showed a characteristic of the isoflavone spectrum with two absorption peaks of 310-330 nm. FT-IR revealed strong absorption at 3380 cm-1 (O-H group), 1737 cm-¹ (C=O group), and 718 cm-1 (C-H alkene group), along with moderate absorption at 2922 cm-1 and 2852 cm-2 (C-H alkane group) and 1650 cm-1 (C=C alkene group). The total flavonoid content of the extract was 89.201 mg/g at 1000 ppm and 87.220 mg/g at 500 ppm. These findings indicate that soursop leaves are rich in flavonoids and other bioactive compounds with potential medicinal value.   Keywords: Soursop leaves, UV-Visible, FT-IR, phytochemical screening, total flavonoids