Science and Technology Indonesia
Vol. 11 No. 3 (2026): July

Root-Derived Phytochemicals from Inula confertiflora for Antioxidant and Antibacterial Activities

Mohammad Budiyanto (Department of Natural Science, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Surabaya, 60231, Indonesia)
Abere Habtamu Manayia (Chemistry Department, Applied Natural Sciences, Debre Markos University, Debre Markos, 269, Ethiopia)
Esubalew Meku Godie (Department of Industrial Chemistry, College of Science, Bahir Dar University, Bahir Dar, 79, Ethiopia)
Minbale Gashu Tadesse (Department of Chemistry, Applied Natural Science, Debre Berhan University, 445, Ethiopia)
Fasih Bintang Ilhami (Department of Natural Science, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Surabaya, 60231, Indonesia)
Sapti Puspitarini (Department of Natural Science, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Surabaya, 60231, Indonesia)



Article Info

Publish Date
21 Jun 2026

Abstract

Inula confertiflora, a medicinal herb indigenous to Ethiopia, often used in traditional treatments for inflammatory and pain-related conditions. The root of I. confertiflora was soaked with n-hexane, ethyl ether, and acetone solvents. The proportion of crude extracts derived from ethyl ether extracts was 1.4 times higher than that of n-hexane and 1.2 times higher than that of acetone. Analytical detection results of crude extracts confirmed that I. confertiflora contained a variety of different preliminary phytochemicals. The higher concentrations of total flavonoids and other polar phytoconstituents present in the ethyl ether extracts were associated with greater radical-scavenging effectiveness in the DPPH solution. More than half of the bacterial growth efficiency was restricted by phytochemicals derived from I. confertiflora root extracts using non-polar, medium-polar, and high-polar solvents. It is crucial to note that medium-polar extracts of I. confertiflora root decreased the inhibitory effect on the development of both gram-positive and gram-negative bacterial strains at a concentration of 100 μg/mL using acetone as the solvent. Additionally, they exhibited improved radical scavenging against a DPPH solution. Moreover, molecular docking simulation clearly revealed that I. confertiflora extracts have a strong binding affinity toward four key bacterial target proteins (LasB (-7.9kcal/mol), PBP2a (-8.0kcal/mol), FabH (-11.3kcal/mol), and MurA1 (-4.7kcal/mol)). Collectively, these findings suggest that I. confertiflora extracts exhibit substantial potential as antibacterial agents by targeting diverse and functionally important bacterial proteins.

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Journal Info

Abbrev

JSTI

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Materials Science & Nanotechnology Physics

Description

An international Peer-review journal in the field of science and technology published by The Indonesian Science and Technology Society. Science and Technology Indonesia is a member of Crossref with DOI prefix number: 10.26554/sti. Science and Technology Indonesia publishes quarterly (January, April, ...