%0 Journal Article %T COMPARATIVE ANALYSIS OF METHODS OF QUANTITATIVE DETERMINATION OF ALKALOIDS FOR CUSTOMS EXAMINATION PURPOSES %A Krotova, I.V. %A Lening, V.D. %A Grechnev, D.M. %A Zakharova, A.A. %A Krekhtunova, K.I. %K caffeine, theobromine, iodometric titration, capillary electrophoresis, high-performance liquid chromatography %J Trade, service, food industry %D 2026 %N 6 %P 10 %I Siberian Federal University