Chemometric modeling of kinetic-fluorescent third-order data for thiamine determination in multivitamin complexes

Add time:09/25/2019    Source:sciencedirect.com

Thiamine (vitamin B1) was converted into a fluorescent thiochrome by oxidation catalyzed by Hg2 + in alkaline medium. The kinetic evolution for this conversion was followed by emission-excitation spectroscopy generating a third-order dataset for each sample, and a four-way data array for a group of samples. The data were analyzed by parallel factor analysis (PARAFAC), which presents the second-order advantage, allowing to estimate the analyte concentrations even in the presence of unknown fluorescent interferences. On the other hand, the second-order advantage does not prevent matrix effects or interferences affecting the reaction mechanism or kinetic properties. For this reasons, standard addition is needed in order to develop a quantitative method for thiamine determination in multivitamin complexes acquired in the local market. The thiochrome emission, excitation and time profiles are correctly isolated in all samples, and the concentration of thiamine in the latter ones was estimated with a deviation lower than 10% of their nominal values.

We also recommend Trading Suppliers and Manufacturers of Thiamine mononitrate (cas 18601-90-6). Pls Click Website Link as below: cas 18601-90-6 suppliers

Prev:Effects of dietary vitamin B1 (thiamine) and magnesium on the survival, growth and histological indicators in lake trout (Salvelinus namaycush) juveniles
Next:Amorphization of thiamine chloride hydrochloride: A study of the crystallization inhibitor properties of different polymers in thiamine chloride hydrochloride amorphous solid dispersions)