Geographical origin of cereal grains based on element analyser-stable isotope ratio mass spectrometry (EA-SIRMS)

Authenticity of rice (Oryza sativa L.) geographical origin based on analysis of C, N, O and S stable isotope ratios: a preliminary case report in Korea, China and Philippine

“…This finding may be related to differences in the micro‐ and macroclimate environmental factors of each cultivation region. In the previous study, δ 13 C VPDB was suggested as an appropriate potential marker for determining the geographical origin of various cereal grains, including rice. Regardless of the plant type (C3 or C4), the δ 13 C VPDB values of rice, wheat, millet, soybean and corn cultivated in China differed significantly according to geographical origin.…”

Multi‐isotopic signatures of organic and conventional Italian pasta along the production chain

“…Some studies have focused on verification of the geographical origin of wheat by using different approaches: e.g. multi‐elemental analysis and/or stable isotope analysis of several light or heavy mass elements including H, C, N, O, S and Sr, 1 H‐NMR profiling and near‐infrared reflectance spectroscopy. Only a limited number of studies have focused on discriminating organic and conventional wheat (both bread and durum) and cereals in general …”

Same old in Middle Neolithic diets? A stable isotope study of bone collagen from the burial community of Jechtingen, southwest Germany

“…For instance, agricultural plots require open conditions and are less moisture tolerant than grazing grounds. Nevertheless, modern studies have shown that soil humidity (O'Leary, 1995), air humidity (Barbour and Farquhar, 2000) as well as average precipitation levels (Diefendorf et al, 2010;Kohn, 2010) are negatively correlated with the d 13 C values of plants and can cause significant differences in the isotope composition of cereal grains from different geographical areas (Wu et al, 2015). Therefore, before considering differences in human dietary composition, we explored the available datasets from the LBK and the Middle Neolithic for their relationship to environmental factors at a smaller regional scale, especially regarding humidity levels.…”