Extraction methods comparison and optimization for isoorientin and isovitexin from Thai jasmine rice leaves
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Publication Details
Author list: Ayuni D.; Devahastin S.; Sirikantaramas S.; Neri L.; Pittia P.; Pattarapipatkul N.; Borompichaichartkul C.
Publisher: Springer
Publication year: 2024
Volume number: 18
Issue number: 11
Start page: 9423
End page: 9434
Number of pages: 12
ISSN: 2193-4126
eISSN: 2193-4134
Languages: English-Great Britain (EN-GB)
Abstract
Selected extraction techniques were first compared for young Jasmine rice leaves, which were evaluated as a novel source of flavone derivatives. Microwave-assisted extraction (MAE), which outperformed other tested methods in terms of phenolic content and antioxidant activity, was then evaluated and optimized. I-optimal design with response surface methodology was used to investigate the effects of and optimize MAE conditions in terms of the extraction time, solvent-to-solid ratio and MW power with extractable isoorientin and isovitexin contents as responses. A ratio of 37.7:1 (mL: g) and specific input MW power of 6.68 W/g for 7.5 min were noted as the optimal condition, yielding isoorientin and isovitexin at 7.23 ± 0.23 and 1.12 ± 0.04 mg/g DW, respectively. Validation of the optimal conditions confirmed that all responses closely aligned with the predictions (error < 5%). The study reveals potential of young Jasmine rice leaves as a good alternative source of flavone derivatives and successfully introduces I-optimal design for plant materials extraction optimization, showcasing its uniqueness and addressing certain limitations of other commonly used experimental designs. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
Keywords
Microwave-assisted extraction, Rapid solid–liquid dynamic extraction
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