Food Matrix Reference Materials for Hydrogen, Carbon, Nitrogen, Oxygen, and Sulfur Stable Isotope-Ratio Measurements: Collagens, Flours, Honeys, and Vegetable Oils
| Autor: | Philip J. H. Dunn, Nives Ogrinc, Arndt Schimmelmann, Tyler B. Coplen, Haiping Qi, Luana Bontempo, Lauren T Reid, Aiman Abrahim, Federica Camin, James F. Carter, Doris Potočnik, Simon Kelly |
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| Rok vydání: | 2020 |
| Předmět: |
Fish Proteins
Stable isotope reference material Hydrogen Flour chemistry.chemical_element Oxygen Isotopes Oxygen Sulfur Isotopes Animals Plant Oils Food science Settore CHIM/10 - CHIMICA DEGLI ALIMENTI Nitrogen Isotopes Stable isotope ratio Fishes Marine fish Honey General Chemistry Deuterium Sulfur Nitrogen Vegetable oil chemistry Carbon nitrogen Environmental science Collagen General Agricultural and Biological Sciences |
| Zdroj: | Journal of Agricultural and Food Chemistry. 68:10852-10864 |
| ISSN: | 1520-5118 0021-8561 |
| Popis: | An international project developed, quality-tested, and measured isotope-delta values of 10 new food matrix reference materials (RMs) for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements to support food authenticity testing and food provenance verification. These new RMs, USGS82 to USGS91, will enable users to normalize measurements of samples to isotope-delta scales. The RMs include (i) two honeys from Canada and tropical Vietnam, (ii) two flours from C3 (rice) and C4 (millet) plants, (iii) four vegetable oils from C3 (olive, peanut) and C4 (corn) plants, and (iv) two collagen powders from marine fish and terrestrial mammal origins. An errors-in-variables regression model included the uncertainty associated with the measured and assigned values of the RMs, and it was applied centrally to normalize results and obtain consensus values and measurement uncertainties. Utilization of these new RMs should facilitate mutual compatibility of stable isotope data if accepted normalization procedures are applied and documented. |
| Databáze: | OpenAIRE |
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