Authentication of premium Asian rice varieties: Stable isotope ratios and multi-elemental content for the identification of geographic fingerprints

作者：Zoe Giannioti, Federico Iván Brigante, Simon Kelly, Nives Ogrinc, Marta Jagodic Hudobivnik, Darja Mazej, Agostino Tonon, Luca Ziller, Chunyapuk Kukusamude, Supalak Kongsri, Saw Thantar, Henni Widyastuti, Yuwei Yuan, Luana Bontempo · 发表于：LWT · 年份：2024 · DOI：10.1016/j.lwt.2024.116752 · 被引用次数：7 · 研究领域：Isotope Analysis in Ecology、Identification and Quantification in Food、GABA and Rice Research

Over 90 percent of the world's rice is produced and consumed in the Asia-Pacific region. Varieties such as Thai Jasmine rice and Paw San (or “Myanmar pearl rice”) are globally recognised as premium, while more local high-grade varieties include the Indonesian Ciherang and Inpari. Being able to trace the origin of these products has become necessary, since they are marketed at relatively higher prices compared to other cultivars, and they often become the target of fraudulent activities. In this work, we aimed to identify variables that could distinguish the premium-producing regions within each country, by Isotope Ratio Mass Spectrometry (IRMS) and Inductively Coupled Plasma- Mass Spectrometry (ICP-MS). Low-Level Data Fusion (LLDF) followed the analysis of more than 300 authentic samples, and (O)PLS-DA models yielded very high accuracy values. The most important geo-differentiating variables (VIP>1.4) were identified as: δ 13 C, δ 18 O, δ 2 H, δ 34 S, Co, Rb, Cu, Ba and Zn.