title: Geographical origin of cereal grains based on element analyser-stable isotope ratio mass spectrometry (EA-SIRMS).
abstract: The stable carbon and nitrogen isotopic compositions (δ(13)C and δ(13)N) of different cereal grains from different regions were determined, using element analyser-stable isotope ratio mass spectrometry (EA-SIRMS) as the key method. Systematically, δ(13)C and δ(13)N of 5 kinds of cereal grains of different origins, 30 wheat samples from different cultivation areas and 160 rice samples of different cultivars from Guangdong province of China were examined. The results indicated that the δ(13)C values of rice, soybean, millet, wheat and corn were significantly (P < 0.05) different within different origins (Heilongjiang, Shandong and Jiangsu province of China), respectively, while δ(13)N values were not. Interestingly, there exists discrimination between these 5 kinds of cereals grains, no matter C-3 or C-4 plants. Further study showed that the δ(13)C values of wheat from Australia, the USA, Canada, and Jiangsu and Shandong province of China were also significantly (P < 0.01) different. Furthermore, the P-value test for 160 rice samples of 5 cultivars was not significant (P > 0.05), which indicated that the cultivar of cereal grains was not significant based on δ(13)C value. Thus, the comparison of δ(13)C would be potentially useful for rapid and routine discrimination of geographical origin of cereal grains.
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
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: 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. Electronic address: 516410953@163.com.
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: 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: Fangfang
authors.initials: F
authors.lastname: Qin
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Wanqing
authors.initials: W
authors.lastname: Han
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.affiliation: Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou, Guangdong, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
mesh_terms: D002247:Carbon Isotopes / Q000032:analysis*; D002523:Edible Grain / Q000737:chemistry*; D013058:Mass Spectrometry / Q000379:methods*; D009587:Nitrogen Isotopes / Q000032:analysis*; D010938:Plant Oils / Q000032:analysis*
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D010938:Plant Oils
keywords: Carbon isotope; Cereal grain; Element analyser-stable isotope ratio mass spectrometry (EA-SIRMS); Geographical origin; Nitrogen isotope