Determination of omeprazole via fluorescence‐quenching methodology; application to content uniformity testing

A new, proven, economical spectrofluorimetric approach has been used to determine the proton pump inhibitor omeprazole (OMP). This innovative technique is based on the ability of OMP to quench the native fluorescence of the mercurochrome dye in an acidic (pH 3.6) solution. Because it was discovered...

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Bibliographic Details
Published in:	Luminescence (Chichester, England) Vol. 39; no. 2; pp. e4682 - n/a
Main Authors:	Elmansi, Heba, Orbano, Asya, Mashkour, Maram, Shamiya, Heba Abo, Belal, Fathalla
Format:	Journal Article
Language:	English
Published:	England Wiley Subscription Services, Inc 01-02-2024
Subjects:	Computation content uniformity Detection Dyes Fluorescence Limit of Detection mercurochrome Omeprazole Proton pump inhibitors Quenching Reaction products Spectrometry, Fluorescence - methods Tablets - chemistry content uniformity omeprazole fluorescence mercurochrome
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Summary:	A new, proven, economical spectrofluorimetric approach has been used to determine the proton pump inhibitor omeprazole (OMP). This innovative technique is based on the ability of OMP to quench the native fluorescence of the mercurochrome dye in an acidic (pH 3.6) solution. Because it was discovered that quenching is proportional to the drug concentration, this dye was used as a sensor for OMP detection. The fluorescence intensity was measured at 518/540 nm, and its linear response ranged from 0.2–10.0 μg/mL with a linear coefficient of 0.9999. The computation yielded a limit of quantification (LOQ) of 0.20 μg/mL and a limit of detection (LOD) of 0.07 μg/mL. Every circumstance and element impacting the reaction product was examined in detail. Pharmacopeial standards carried out the validation. The approved method investigated several commercial preparations and formulations, and the results were favorably compared with those provided by a reference method. According to United States Pharmacopeia (USP) rules, content consistency for two distinct formulations was evaluated. Omeprazole, a proton pump inhibitor, was determined by its quenching effect on the native fluorescence of mercurochrome in acidic medium.
Bibliography:	Funding information No funding supported this research. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1522-7235 1522-7243
DOI:	10.1002/bio.4682