Detection of royal jelly adulteration using carbon and nitrogen stable isotope ratio analysis
| Autor: | Antonius Kettrup, A. Stocker, Eberhard Bengsch, A. Rossmann |
|---|---|
| Přispěvatelé: | Lehrstuhl für Biologische Chemie, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Centre de biophysique moléculaire (CBM), Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Institute of Ecological Chemistry [Neuherberg], German Research Center for Environmental Health - Helmholtz Center München (GmbH), Isolab GmbH |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Delta
food.ingredient chemistry.chemical_element Food Contamination Sensitivity and Specificity 01 natural sciences Mass Spectrometry Analytical Chemistry 0404 agricultural biotechnology food Royal jelly Animals Carbon Radioisotopes Isotope-ratio mass spectrometry Sugar Spectroscopy Nitrogen Radioisotopes Chromatography Stable isotope ratio High-fructose corn syrup Chemistry Fatty Acids 010401 analytical chemistry Organic Chemistry Reproducibility of Results 04 agricultural and veterinary sciences Bees 040401 food science Nitrogen Isotopes of nitrogen 0104 chemical sciences Food Analysis |
| Zdroj: | Rapid Communications in Mass Spectrometry Rapid Communications in Mass Spectrometry, Wiley, 2006, 20, pp.181-184. ⟨10.1002/rcm.2287⟩ |
| ISSN: | 0951-4198 1097-0231 |
| DOI: | 10.1002/rcm.2287⟩ |
| Popis: | Stable isotope ratios ((13)C/(12)C and (15)N/(14)N) were measured in royal jelly (RJ) samples by isotope ratio mass spectrometry (IRMS) to evaluate authenticity and adulteration. Carbon and nitrogen isotope contents (given as delta values relative to a standard, delta(13)C, delta(15)N) of RJ samples from various European origins and samples from commercial sources were analyzed. Uniform delta(13)C values from -26.7 to -24.9 per thousand were observed for authentic RJ from European origins. Values of delta(15)N ranged from -1.1 to 5.8 per thousand depending on the plant sources of nectars and pollen. High delta(13)C values of several commercial RJ samples from -20.8 to -13.3 per thousand indicated adulteration with high fructose corn syrup (HFCS) as a sugar source. Use of biotechnologically produced yeast powder as protein source for the adulterated samples was assumed as delta(15)N values were lower, as described for C(4) or CAM plant sources. RJ samples from authentic and from adulterated production were distinguished. The rapid and reliable method is suitable for urgent actual requirements in food monitoring. |
| Databáze: | OpenAIRE |
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