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dc.contributor.authorWatsaka Siriangkhawuten_US
dc.contributor.authorPirom Didpinrumen_US
dc.contributor.authorYaowalak Khanhuathonen_US
dc.contributor.authorKraingkrai Ponhongen_US
dc.contributor.authorKate Grudpanen_US
dc.description.abstract© 2019, © 2019 Taylor & Francis Group, LLC. An environmentally friendly field-portable approach based on small-scale ultrasound-assisted extraction and micro-volume colorimetry was proposed for the determination of iron using natural reagent extracts from pomegranate peels. Ultrasound technology was utilized for the extraction of pomegranate peels in acetate buffer pH 5.5. Sonication parameters influencing the extraction process of natural reagents from pomegranate peel were investigated, including the type of solvent, mass/volume ratio of solvent, sonication time, temperature, and power. The efficiency of the ultrasound-assisted procedure for the extraction of iron from pharmaceutical formulations was evaluated by comparing to their label value and the reference method for pharmaceutical formulations. A linear calibration graph ranging from 1.0 to 10.0 mg L−1 Fe(III) was obtained from micro-volume colorimetric determination (at 530 nm) with limits of detection and quantification of 0.31 and 0.78 mg L−1, respectively. The reproducibility for 3.0 mg L−1 Fe(III) was 3.8% as the relative standard deviation. This developed system was successfully applied to determine the iron content in pharmaceutical formulations and the results agreed well with those obtained by a reference method. Good recoveries between 97 and 105% were obtained.en_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.titleSmall-Scale Ultrasound-Assisted Extraction of Phenolics from Pomegranate Peels and Their Application as a Natural Reagent for the Colorimetric Assay of Ironen_US
article.title.sourcetitleAnalytical Lettersen_US
article.volume53en_US Universityen_US Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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