RT journal article T1 Ultrasound-Assisted Extraction of Antioxidants and Neuroprotective Compounds from Banana Flowers via Simplex-Centroid Solvent Optimization A1 Oktaviani, Nurul Mutmainah Diah A1 Harun, M. Umar A1 Oktavirina, Viki A1 Prabawati, Nadhila B. A1 Manikharda A1 Setyaningsih, Widiastuti A1 Palma Lovillo, Miguel A2 Química Analítica K1 Bioactive Compounds K1 Chromatography K1 Flavonoids K1 Phenolic Acids K1 Solvent Optimization AB Banana (Musa paradisiaca) flowers are rich in bioactive compounds with antioxidant, anti-inflammatory, and neuroprotective potential. This study optimized the extraction of flavonoids, phenolic acids, and aldehyde, as well as neuroprotective compounds, specifically tryptophan and serotonin, using ultrasound-assisted extraction (UAE) coupled with a simplex-centroid solvent mixture design. Four solvents water, methanol, ethanol, and acetonitrile were evaluated in 15 combinations, with bioactive compounds quantified via Ultra-Performance Liquid Chromatography coupled with Photodiode Array detection. The quadratic model used in optimization achieved high regression, with R² values ranging from 91 to 98%. Optimal solvent ratios were water:acetonitrile (51:49) for flavonoids (hesperidin, quercetin-3-glucoside, and epigallocatechin gallate), water:methanol:ethanol (32:63:5) for phenolic acids and aldehyde (protocatechuic aldehyde, syringic acid, and isoferulic acid), and water:acetonitrile (84:16) for neuroprotective compounds (tryptophan and serotonin). Quantification was conducted across seven banana flower varieties, revealing substantial differences in compound levels. These variations suggest the potential to select superior varieties for targeted functional uses. While optimization was based on pooled data, the solvent system is broadly applicable across cultivars. Overall, the developed UAE method provides a high-efficiency, eco-friendly approach for extracting bioactive compounds, highlighting its potential applications in food, pharmaceutical, and nutraceutical industries. PB EDP Sciences SN 2117-4458 YR 2025 FD 2025 LK http://hdl.handle.net/10498/39374 UL http://hdl.handle.net/10498/39374 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 05-nov-2026