title: The determination and application of (87) Sr/(86) Sr ratio in verifying geographical origin of wheat.
abstract: As87Sr/86Sr ratio plays a significant role in authenticating the geographical origin of foodstuff, it is important to identify where the87Sr/86Sr signature in food comes from, and the methods of87Sr/86Sr ratio analysis in food and environmental samples. Wheat with three genotypes, soil and groundwater samples were collected from three regions of China during harvest time of 2014. The87Sr/86Sr ratios in the samples were determined by thermal ionization mass spectrometer in order to investigate the possible source of87Sr/86Sr in wheat, and the concentrations of Rb and Sr in wheat and soils were also detected by inductively coupled plasma mass spectrometry and combined with87Sr/86Sr ratio in order to trace the geographical origin of wheat. The87Sr/86Sr ratio, the contents Rb and Sr, and Rb/Sr ratio of wheat and soil samples showed significant differences among three regions. The87Sr/86Sr ratios and the concentrations of Rb and Sr in soils were higher than those in corresponding wheat. The87Sr/86Sr ratio in wheat was identical to that corresponding soil NH4NO3extracts (labile fraction of soil) and groundwater. Wheat uptake more Rb than Sr. 3D distribution of87Sr/86Sr, Rb and Sr could identify wheat samples from different regions clearly. The87Sr/86Sr ratio of wheat reflects the87Sr/86Sr ratio of the associated environment including soil and groundwater. It is expected that the use the parameters of87Sr/86Sr ratio, the contents of Rb and Sr will allow to trace geographical origin of wheat. Copyright © 2017 John Wiley & Sons, Ltd.
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: H
authors.identifier: 0000-0001-7842-0580
authors.initials: H
authors.lastname: Liu
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Wei
authors.affiliation: Division of Chemical Metrology and Analytical Science, National Institute of Metrology, No. 18 North Third Ring Rd., Beijing, 100029, China.
authors.forename: H
authors.initials: H
authors.lastname: Lu
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: S
authors.initials: S
authors.lastname: Wei
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: T
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Shijiazhuang Academy of Agricultural and Forestry Sciences, No. 479 Shengli North Street, Shijiazhuang, 050041, China.
authors.forename: J
authors.initials: J
authors.lastname: Ban
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No.1 Nongda South Rd., Beijing, 100193, China.
authors.forename: B
authors.initials: B
authors.lastname: Guo
mesh_terms: D002681:China; D005838:Genotype; D005843:Geography; D060587:Groundwater / Q000737:chemistry; D013058:Mass Spectrometry; D012413:Rubidium / Q000032:analysis; D012987:Soil / Q000737:chemistry; D013325:Strontium Isotopes / Q000032:analysis*; D014908:Triticum / Q000737:chemistry* / Q000235:genetics
chemical_list: D012987:Soil; D013325:Strontium Isotopes; D012413:Rubidium
keywords: 87Sr/86Sr; Rubidium (Rb); Strontium (Sr); TIMS; geographical origin