Rapid analysis of taurine in energy drinks using amino acid analyzer and Fourier transform infrared (FTIR) spectroscopy as basis for toxicological evaluation

S. Triebel; C. Sproll; H. Reusch; R. Godelmann; D. W. Lachenmeier
September 2007
Amino Acids;Sep2007, Vol. 33 Issue 3, p451
Academic Journal
Summary.  So-called energy drinks with very high amounts of taurine (up to 4000 mg/l are usually granted by certificates of exemption) are increasingly offered on the market. To control the currently valid maximum limits of taurine in energy drinks, a simple and rapid analytical method is required to use it routinely in food monitoring. In this article, we describe a fast and efficient analytical method (FTIR-spectroscopy) that is able to reliably characterize and quantify taurine in energy drinks. The determination of taurine in energy drinks by FTIR was compared with amino acid analyzer (ion chromatography with ninhydrin-postcolumn derivatization). During analysis of 80 energy drinks, a median concentration of 3180 mg/l was found in alcohol-free products, 314 mg/l in energy drinks with spirits, 151 mg/l in beer-containing drinks and 305 mg/l in beverages with wine. Risk analysis of these products is difficult due to the lack of valid toxicological information about taurine and its interferences with other ingredients of energy drinks (for example caffeine and alcohol). So far, the high taurine concentrations of energy drinks in comparison to the rest of the diet are scientifically doubtful, as the advertised physiological effects and the value of supplemented taurine are unproven.


Related Articles

  • Fixed stereochemical control in the synthesis of new mono- and disubstituted 2-phenyl-6-aza-1,3-dioxa-2-borabenzocyclononenes. Beltrán, Hiram I; Alas, S Jesús; Santillan, Rosa; Farfán, Norberto // Canadian Journal of Chemistry;Jul2002, Vol. 80 Issue 7, p801 

    Five new boronates of the type 2-phenyl-6-aza-1,3-dioxa-2-borabenzocyclononenes (6a–e) were prepared from substituted 2-[(2-hydroxyethylamino)methyl]phenols (4a–e) and phenylboronic acid (5) in benzene-EtOH (4:1) mixtures. Tridentate ligands 4a–e and boronates 6a–e...

  • Biodegradable Copoly(Amino Acid)s Based on 6-Aminocaproic Acid and l-Leucine. Weipeng Zhang; Yanqin Huang // Journal of Polymers & the Environment;Mar2011, Vol. 19 Issue 1, p177 

    Biodegradable copoly(amino acid)s based on 6-aminocaproic acid and l-leucine were prepared by melt condensation polymerization and characterized by Fourier transform infrared spectrometry (FTIR), proton nuclear magnetic resonance spectrometry (H NMR), and X-ray diffraction (XRD). The intrinsic...

  • Infrared spectroscopic characterization of copper–polyhistidine from 1,800 to 50 cm−1: model systems for copper coordination. El Khoury, Youssef; Hellwig, Petra // Journal of Biological Inorganic Chemistry;Jan2009, Vol. 14 Issue 1, p23 

    Poly( l-histidine) and imidazole in the presence of copper cations have been investigated by means of Fourier transform infrared (IR) spectroscopy in the mid- and far-IR spectral range to establish specific marker bands of the copper-coordination site in metalloproteins as a function of pH as...

  • Hydration of amino acids: FTIR spectra and molecular dynamics studies. Panuszko, Aneta; Adamczak, Beata; Czub, Jacek; Gojło, Emilia; Stangret, Janusz // Amino Acids;Nov2015, Vol. 47 Issue 11, p2265 

    The hydration of selected amino acids, alanine, glycine, proline, valine, isoleucine and phenylalanine, has been studied in aqueous solutions by means of FTIR spectra of HDO isotopically diluted in HO. The difference spectra procedure and the chemometric method have been applied to remove the...

  • Problem in analyzing cystine stones using FTIR spectroscopy. Marickar, Y. M. Fazil; Lekshmi, P. R.; Varma, Luxmi; Koshy, Peter // Urological Research;Oct2009, Vol. 37 Issue 5, p263 

    Cystine stones are produced by an inherited disorder of the transport of amino acid cystine that results in excess of cystine in the urine (cystinuria). Cystine calculi in urinary tract present a significant problem in patients. We have recorded that cystine calculi are very uncommon in our...

  • Application of coupled TG-FTIR system in studies of thermal stability of manganese(II) complexes with amino acids. Sikorska-Iwan, M.; Mrozek-Lyszczek, R. // Journal of Thermal Analysis & Calorimetry;2004, Vol. 78 Issue 2, p487 

    Detailed thermal analysis of manganese(II) complexes with a-amino acids were carried out. The thermal degradation is multi-stage. Dehydration of complexes is the first mass loss step. Anhydrous compounds are unstable and decompose to Mn3O4 in air or to MnO in inert atmosphere. The intermediate...

  • THERMODYNAMIC AND SPECTROSCOPIC INVESTIGATION OF POLAR PROTIC SOLUTIONS OF L. ARGININE MONO HYDROCHLORIDE. Kannagi, K.; Rani, E. Jasmine Vasantha; Padmavathy, R.; Radha, N. // International Journal of Current Research & Review;Aug2012, Vol. 4 Issue 16, p156 

    FTIR spectroscopic techniques are widely used as a tool with unique capability and sensitivity. The shift and splitting up of the frequencies of molecular ions are interpreted in terms of molecular interactions. In the present investigation an attempt is made to correlate the spectroscopic...

  • Usefulness of spectroscopy for biomedical engineering. OLSZTYIŃSKA-JANUS, SYLWIA; SZYMBORSKA, KATARZYNA; KOMOROWSKA, MAŁGORZATA; LIPINSKI, JÓZEF // Acta of Bioengineering & Biomechanics;2008, Vol. 10 Issue 3, p45 

    Modifications of phenylalanine amino acid after its exposure to near-infrared (NIR) radiation have been investigated using ATRFTIR (Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy). The process of amino acid aggregation alter its exposure to NIR has been observed. A possible...

  • Interaction Study of Some Ortho and Para Amines With 1-Octanol. Manjunatha, M. S.; Sannappa, J. // International Journal of Applied Chemistry;2009, Vol. 5 Issue 2, p77 

    Molecular interaction between Ortho and Para amines such as Chloroaniline, Methylaniline, and Methoxyaniline with 1-Octanol has been studied in carbon tetrachloride by using FT-IR study. The most likely association complex between 1-octanol and subsistent of aniline is 1:1 stoichiometric complex...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics