Impact of extraction methods on bioactive compounds and antioxidant activities of Thai jasmine rice leaf extracts

• DOI: 10.1111/ijfs.17062
• Publication Date: 2024-03-19T06:26:55Z
• Authors: Dwi Ayuni; Lilia Neri; Paola Pittia; Supaart Sirikanta...; Sakamon Devahastin; Chaleeda Borompic...
• Keywords: 0301 basic medicine; 03 medical and health sciences; Decoction; flavone derivatives; isoorientin; isovitexin; maceration; optimization

Summary Studies have recently highlighted potential health benefits of young rice leaves; however, optimization extraction process was often overlooked. The present study aimed to assess impacts methods, namely, maceration and decoction, on total phenolics content antioxidant activities based FRAP, DPPH, ABTS assays extracts from Thai cultivar Jasmine leaves. examined influences ethanol concentration (0–100% (v/v) for maceration), boiling time (10–30 min decoction) solvent‐to‐solid ratio (20–40 mL g −1 both decoction). Results showed that under its optimal condition (50% 30 ), yielded significantly higher phenolic content, 12.54 ± 0.94 mg GAE/g DW. Furthermore, mechanisms single electron transfer responsible were explored, identifying flavonoids as chemical markers in leaf extracts. Flavonoid derivatives, specifically isoorientin (3.33 0.10 mg/g DW) isovitexin (0.98 0.03 DW), subsequently quantified. This research contributed improved understanding relations between bioactive compounds their activities. findings also underscore leaves natural additives future functional foods production.