Simultaneous and rapid determination of caffeine and taurine in energy drinks by MEKC in a short capillary with dual contactless conductivity/photometry detection

Vochyánová, Blanka; Opekar, František; Tůma, Petr

doi:10.1002/elps.201300480

Cited by 36 publications

(35 citation statements)

References 23 publications

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“…; Jenway Analysis ; Vochyanova et al. ; Sereshti and Samadi ). For a detailed list, and comparison, of the nutrient composition of RB and sfRB, please refer to Table .…”

Section: Methodsmentioning

confidence: 99%

The blood pressure-elevating effect of Red Bull energy drink is mimicked by caffeine but through different hemodynamic pathways

et al. 2015

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The energy drink Red Bull (RB) has recently been shown to elevate resting blood pressure (BP) and double product (reflecting increased myocardial load). However, the extent to which these effects can be explained by the drink's caffeine and sugar content remains to be determined. We compared the cardiovascular impact of RB to those of a comparable amount of caffeine, and its sugar-free version in eight young healthy men. Participants attended four experimental sessions on separate days according to a placebo-controlled randomized crossover study design. Beat-to-beat hemodynamic measurements were made continuously for 30 min at baseline and for 2 h following ingestion of 355 mL of either (1) RB + placebo; (2) sugar-free RB + placebo; (3) water + 120 mg caffeine, or (4) water + placebo. RB, sugar-free RB, and water + caffeine increased BP equally (3–4 mmHg) in comparison to water + placebo (P < 0.001). RB increased heart rate, stroke volume, cardiac output, double product, and cardiac contractility, but decreased total peripheral resistance (TPR) (all P < 0.01), with no such changes observed following the other interventions. Conversely, sugar-free RB and water + caffeine both increased TPR in comparison to the water + placebo control (P < 0.05). While the impact of RB on BP is the same as that of a comparable quantity of caffeine, the increase occurs through different hemodynamic pathways with RB's effects primarily on cardiac parameters, while caffeine elicits primarily vascular effects. Additionally, the auxiliary components of RB (taurine, glucuronolactone, and B-group vitamins) do not appear to influence these pathways.

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“…; Jenway Analysis ; Vochyanova et al. ; Sereshti and Samadi ). For a detailed list, and comparison, of the nutrient composition of RB and sfRB, please refer to Table .…”

Section: Methodsmentioning

confidence: 99%

The blood pressure-elevating effect of Red Bull energy drink is mimicked by caffeine but through different hemodynamic pathways

et al. 2015

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“…MEKC was also employed to determine taurine in energy drinks. In this case, the aim was to determine the caffeine and taurine contents (the major components) simultaneously in energy drinks, using a dual detection system in a short capillary (10.5 cm) employing a laboratory-home-made instrument [32]. Caffeine was detected by UV detection, whereas contactless conductivity detection (C 4 D) was employed for determining taurine since it does not absorb in the UV/vis region.…”

Section: Sulfur Amino Acidsmentioning

confidence: 99%

Capillary electrophoresis determination of non-protein amino acids as quality markers in foods

Pérez-Míguez

Marina

Castro-Puyana

2016

Journal of Chromatography A

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“…The separation of caffeine and taurine was performed using the Micellar electrokinetic chromatography ( MEKC) technique in a short 10.5 cm capillary with the composition 40 mM CHES, 15 mM NaOH, and 50 mM SDS, pH 9.36.Under these conditions, the migration time of caffeine is 43 s and of taurine 60 s. The substances are detected using a contactless conductometry / ultraviolet (UV) photometry detector that enables recording both signals at one place in the capillary [20].…”

Section: Electrophoresismentioning

confidence: 99%

Analytical Approaches and Methods in Quality Control Procedures of Energy Food Drinks Containing Caffeine and Taurine

Todorova¹

2015

IJNFS

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Abstract:Energy food drinks are carbonated drinks that contain large amounts of caffeine and sugar with additional ingredients, such as taurine, amino acids, vitamins and herbal stimulants as guarana. Their popularity among people especially adolescents continues to grow. The success of energy drink is related to their reputation of enhancing physical performances, driving ability when tired, cognitive functions, mental concentration level and reduced the reaction time. The expanded usage of energy food drinks set some problems between producers and consumers. The problems concern quality control questions, limitation of doses of biologically active caffeine and taurine, compatibility of ingredients, side effects. The present literature review analyses and generalized analytical approaches and methods in quality control procedures, their applications, restrictions and priorities.

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Simultaneous and rapid determination of caffeine and taurine in energy drinks by MEKC in a short capillary with dual contactless conductivity/photometry detection

Cited by 36 publications

References 23 publications

The blood pressure-elevating effect of Red Bull energy drink is mimicked by caffeine but through different hemodynamic pathways

The blood pressure-elevating effect of Red Bull energy drink is mimicked by caffeine but through different hemodynamic pathways

Capillary electrophoresis determination of non-protein amino acids as quality markers in foods

Analytical Approaches and Methods in Quality Control Procedures of Energy Food Drinks Containing Caffeine and Taurine

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