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All Journal PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia) Jurnal Farmasi Higea Jurnal Ilmiah Pharmacy JAFP (Jurnal Akademi Farmasi Prayoga) Jurnal Katalisator Jurnal Ilmiah Farmasi Simplisia Indonesian Journal of Chemical Science
Irene Puspa Dewi
Akademi Farmasi Prayoga Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health

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Optimization of Ethanol-Water Solvent System for Total Flavonoid Extraction from Okara Reny Salim; Tuty Taslim; Irene Puspa Dewi; Verawaty
Indonesian Journal of Chemical Science Vol. 15 No. 2 (2026): Indonesian Journal of Chemical Science
Publisher : Prodi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v15i2.46170

Abstract

Okara, an agro-industrial by product of soybean processing, is a potential source of flavonoids, particularly isoflavones. However, its large scale production often exceeds current utilization, resulting in its underexploitation. This study investigates the effect of ethanol-water solvent ratios on the total flavonoid content of dried okara powder and includes physicochemical characterization of the raw material. Extraction was carried out by maceration using ethanol-water mixtures (v/v) of 1:2 and 2:1. The total flavonoid content was 676.88 ± 15.66 µg/g dry weight for the 1:2 solvent system and 137.87 ± 0.53 µg/g dry weight for the 2:1 solvent system. These findings demonstrate that increasing the proportion of water in the solvent system enhances the extraction efficiency of flavonoids from okara.
Co-Authors Anggun Josepin Simamora Hendri Gunawan Sakoikoi Meyyana Diara Sababalat Salim, Reny Tuty Tasli Tuty Taslim Verawaty, Verawaty Wela Wela Wike Rahmana Wijaya