Details

Autor(en) / Beteiligte

• Sheng, Meiling
• Zhang, Weixing
• Nie, Jing
• Li, Chunlin
• Zhu, A-Xing
• Hu, Hao
• Lou, Weidong
• Deng, Xunfei
• Lyu, Xiaonan
• Ren, Zhouqiao
• Rogers, Karyne M.
• Abdul Wadood, Syed
• Zhang, Yongzhi
• Yuan, Yuwei

Titel

Predicting isoscapes based on an environmental similarity model for the geographical origin of Chinese rice

Ist Teil von

• Food chemistry, 2022-12, Vol.397, p.133744-133744, Article 133744

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• •δ13C, δ2H and δ18O isoscapes for Chinese rice were predicted.•The correlation between stable isotopes and environmental factors were studied.•Predicted isotope distribution based on a similarity approach had high accuracy.•Isotope spatial distribution uncertainty is used to indicate the prediction accuracy.•Lower accuracy in the predictive model guides future sampling strategies. The authentication of geographical origin of food is important using stable isotope analysis. However, the isotopic databank is still short of comprehensive. The isoscapes model based on environmental similarity is used for the first time to predict the geospatial distribution of δ13C, δ2H and δ18O in Chinese rice in 2017 and 2018. 794 rice samples in 2017 were used to build isoscapes model. Independent verification shows that the predicted isotope distribution from this new approach is of high accuracy, with a root mean square error (RMSE) of 0.51 ‰, 7.09 ‰ and 2.06 ‰ for δ13C, δ2H and δ18O values for 2017, respectively. Our results indicate that it is possible to predict the spatial distribution of stable isotopes in rice using an isoscapes model based on environmental similarity. This novel strategy can enrich and complement a stable isotope reference database for rice origin identification at regional scale.