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Updated: May 27, 2025
Thermostabilization, Expression, Purification, and Crystallization of the Human Serotonin Transporter Bound to S-citalopram
Published on: November 27, 2016
Box-Behnken Design and Molecular Docking Assisted Quenching Spectrofluorimetric Method for the Quantitation of
Syed Najmul Hejaz Azmi1, Wafa Aqib Nasir Al Rawahi2, Zamzam Sulaiman Zahran Al Nabhani2
1Applied Sciences Department, College of Applied Sciences and Pharmacy, University of Technology and Applied Sciences-Muscat, Al Khuwair 133, P. O. Box 74, Muscat, Sultanate of Oman. syed.najmul@utas.edu.om.
Abstract:
A simple, sensitive and accurate spectrofluorimetric method was presented for the determination of citalopram hydrobromide (CTM) in tablets. The method was based on the quenching of bovine serum albumin (BSA) fluorescence with CTM at pH 7.4. The fluorescence intensities were measured at 342 nm after excitation at 279 nm. Various factors affecting the quenching of BSA fluorescence were optimized by response surface methodology (RSM) through Box-Behnken design (BBD. The plot of F0/F versus CTM concentration was linear in the concentration range of 10-100 µg mL-1. The limit of detection (LOD) and limit of quantitation (LOQ) were 2.08 and 6.30 µg mL-1, respectively The molar combining ratio between CTM and BSA was 1:1. The complementary modified green analytical procedure index (ComplexMoGAPI) was 90%. The effect interference of common excipients found in tablets was investigated. Percent recoveries of CTM was ranged from 99.92 to 100.27% in tablets.
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