title: Combination of the (87)Sr/(86)Sr ratio and light stable isotopic values (δ(13)C, δ(15)N and δD) for identifying the geographical origin of winter wheat in China.
abstract: This study aims to investigate whether isotopic signatures can be used to develop reliable fingerprints for discriminating the geographical origin of Chinese winter wheat, and to evaluate the discrimination effects of δ(13)C, δ(15)N and δD, alone or with (87)Sr/(86)Sr. In this study, the values of δ(13)C, δ(15)N and δD, and the (87)Sr/(86)Sr ratios of wheat and provenance soils from three regions were determined. Significant differences were found in all parameters of wheat and (87)Sr/(86)Sr in soil extract (reflecting the bioavailable fraction of soil) among different regions. A significantly positive correlation was observed between the (87)Sr/(86)Sr ratios of wheat and soil extracts. An overall correct classification rate of 77.8% was obtained for discriminating wheat from three regions based on light stable isotopes (δ(13)C, δ(15)N, and δD). The correct classification rate of 98.1% could be obtained with the combination of the (87)Sr/(86)Sr ratio and the light stable isotopic values.
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Liu
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China.
authors.forename: Yimin
authors.initials: Y
authors.lastname: Wei
authors.affiliation: Division of Chemical Metrology and Analytical Science, National Institute of Metrology, Beijing 100029, China.
authors.forename: Hai
authors.initials: H
authors.lastname: Lu
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Wei
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China.
authors.forename: Yingquan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Comprehensive Key Laboratory of Agro-Products Processing, Ministry of Agriculture, Beijing 100193, China. Electronic address: guoboli2007@126.com.
authors.forename: Boli
authors.initials: B
authors.lastname: Guo
mesh_terms: D002247:Carbon Isotopes / Q000032:analysis*; D002681:China; D005843:Geography; D009587:Nitrogen Isotopes / Q000032:analysis*; D012621:Seasons; D012987:Soil / Q000737:chemistry*; D013325:Strontium Isotopes / Q000032:analysis*; D014908:Triticum / Q000737:chemistry* / Q000254:growth & development
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D012987:Soil; D013325:Strontium Isotopes
keywords: (87)Sr/(86)Sr; Geographical origin; δ(13)C; δ(15)N; δD