alexa Automated measurement of permeation and dissolution of propranolol HCl tablets using sequential injection analysis.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Motz SA, Klimundov J, Schaefer UF, Balbach S, Eichinger T,

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Abstract Aim of this study was to automate sampling and quantification of the previously described apparatus for combined determination of dissolution and permeation through Caco-2 monolayer by means of sequential injection analysis (SIA). Native fluorescence of propranolol HCl in Krebs-Ringer buffer (KRB) was used for quantification. Sampling was done at three different locations within the apparatus at a high sampling frequency (approximately 60 h(-1)). Injection volume delivered to the fluorescence detector was 50 microL for permeation monitoring and 25 microL for dissolution monitoring. Linear regression for 50 microL injection yielded a detection limit calculated as 0.04 microg mL(-1) of propranolol HCl in KRB (R(2)>0.999). However, linearity for dissolution monitoring was not given for the complete range of concentrations and first order polynomial calibration was established (R(2)>0.9999). To conclude, the SIA system was able to monitor simultaneously dissolution and permeation of the immediate release propranolol HCl tablets and the authors succeeded in automating the apparatus for combined measurement of dissolution and permeation. In addition, the obtained data was consistent with data obtained by manual sampling followed by HPLC analysis. This article was published in Anal Chim Acta and referenced in Pharmaceutica Analytica Acta

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