Quantitative determination of caffeine in coffee by chemiluminescent method

N. Yu. Bondarenko, M. Ye. Blazheyevskiy

Abstract


The method of caffeine chemilumeniscent determination in coffee beans «Arabica» (Galka Ltd, Lviv, Ukraine) based on reaction of inhibition of chemilumeniscent oxidation of luminol by hydrogen peroxide, catalyzed by blood hemoglobin have been elaborated. It was found that other purine compounds including theobromine and theophylline, in comparable amounts relative to caffeine showed no inhibitory activity or any other effect on chemiluminescence parameters of the system. A recovery was 100.13 ± 1.96%, RSD ≤ 2.12% (δ = + 0.14%).


Keywords


determination; luminol; hemoglobin; Caffeine; coffee; chemilumeniscence method

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References


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DOI: https://doi.org/10.24959/89419

Abbreviated key title: Ukr. bìofarm. ž.

ISSN 2519-8750 (Online), ISSN 2311-715X (Print)