RT journal article T1 Optimization of an Ultrasound-Assisted Extraction Method Applied to the Extraction of Flavonoids from Moringa Leaves (Moringa oleifera Lam.) A1 Yerena-Prieto, Beatriz Juliana A1 Gonzalez-Gonzalez, Montserrat A1 Vázquez Espinosa, Mercedes A1 Velasco González de Peredo, Ana A1 Garcia Alvarado, Miguel Angel A1 Palma Lovillo, Miguel A1 Rodríguez-Jimenes, Guadalupe del Carmen A1 Fernández Barbero, Gerardo A2 Química Analítica K1 Box–Behnken design K1 flavonoids K1 Moringa oleifera K1 response surface methodology K1 ultrasound-assisted extraction K1 UHPLC-QToF-MS AB Interest in phenolic compounds has recently increased due to their potential as antioxidant agents. Moringa leaves (Moringa oleifera) have a high content of phenolic compounds, which presents them as a promising source for the extraction of these compounds. However, it is necessary to use analytical techniques to identify and quantify their actual compound content to determine the quality of the raw material and the potential of the final product. Ultrasound assisted extraction is a green, rapid and environmentally friendly extraction technique that produces high quality extracts from natural products. Hence, the aim of this research is to optimize the variables of the ultrasound-assisted extraction (UAE) process for the extraction of moringa leaves using response surface methodology (RSM) to extract the main flavonoids using methanol as the extraction solvent. A Box-Behnken design (BBD) has been used to evaluate the effect of the ultrasound extraction process variables. Finally, the optimal extraction time in the range between 2 and 30 min was determined. The results revealed that the methanol concentration was the most influential variable. The optimal extraction time was established at 15 min. Six of the main flavonoids were quantified by UHPLC-DAD and identified by UHPLC-QToF-MS. The results confirmed that UAE is an efficient method for the extraction and subsequent analysis and quality control of the flavonoids that can be found in moringa leaves. PB MDPI SN 2073-4395 YR 2022 FD 2022-02 LK http://hdl.handle.net/10498/26555 UL http://hdl.handle.net/10498/26555 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 13-nov-2026