title: The application of stable isotope ratio analysis to determine the geographical origin of wheat.
abstract: In this work, in order to discriminate the geographical origin of wheat, δ(13)C and δ(15)N values of 35 wheat samples originated from different regions were determined, using the method of element analyser-stable isotope ratio mass spectrometry. The results indicated that wheat from Australia, the USA, Canada and China could be potentially discriminated by using analyte δ(13)C and δ(15)N. δ(13)C values of wheat were ranged from -25.647‰ to -22.326‰, the δ(15)N values of 35 wheat samples were calculated between 1.859‰ and 7.712‰. Moreover, the results illustrated regional distributions of δ(15)N values of wheat as Australia>The USA>Jiangsu province of China>Shandong province of China>Canada. So δ(13)C and δ(15)N analysis would be potentially useful for rapid and routine analyses of geographical origin of wheat, even the cereal grains. In order to confirm the discrimination capability of δ(13)C and δ(15)N, a follow-up work will use this method to analyse a larger set of samples.
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Donghui
authors.initials: D
authors.lastname: Luo
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Dong
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Haiying
authors.initials: H
authors.lastname: Luo
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Yanping
authors.initials: Y
authors.lastname: Xian
authors.affiliation: Guangdong Institute of Cereal Science Research, Guangzhou, Guangdong, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Wan
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Xindong
authors.initials: X
authors.lastname: Guo
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Yuluan
authors.initials: Y
authors.lastname: Wu
mesh_terms: D001315:Australia; D002247:Carbon Isotopes / Q000032:analysis*; D002681:China; D005843:Geography; D009587:Nitrogen Isotopes / Q000032:analysis*; D014908:Triticum / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes
keywords: Element analyser–isotope ratio mass spectrometry (EA–IRMS); Geographical origin; Stable carbon isotope ratios; Stable nitrogen isotope ratios; Wheat