Food matrix reference materials for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements: Collagens, flours, honeys, and vegetable oils

Arndt Schimmelmann; Haiping Qi; Philip J.H. Dunn; Federica Camin; Luana Bontempo; Doris Potocnik; Nives Ogrinc; Simon Kelly; James Carter; Aiman Abrahim; Lauren T Reid; Tyler B. Coplen

doi:10.1021/acs.jafc.0c02610

Food matrix reference materials for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements: Collagens, flours, honeys, and vegetable oils

Journal of Agricultural and Food Chemistry

By: Arndt Schimmelmann, Haiping Qi, Philip J.H. Dunn, Federica Camin, Luana Bontempo, Doris Potocnik, Nives Ogrinc, Simon Kelly, James Carter, Aiman Abrahim, Lauren T Reid, and Tyler B. Coplen

https://doi.org/10.1021/acs.jafc.0c02610

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Abstract

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.

Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Food matrix reference materials for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements: Collagens, flours, honeys, and vegetable oils
Series title	Journal of Agricultural and Food Chemistry
DOI	10.1021/acs.jafc.0c02610
Volume	68
Issue	39
Year Published	2020
Language	English
Publisher	American Chemical Society
Contributing office(s)	WMA - Laboratory & Analytical Services Division
Description	13 p.
First page	10852
Last page	10864
Google Analytic Metrics	Metrics page