Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan; College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China.
Food Chem. 2022 Jul 15;382:131914. doi: 10.1016/j.foodchem.2021.131914. Epub 2022 Jan 5.
Geographical traceability of marine bivalves is becoming increasingly important to assure their quality and to defend the interest of consumers and producers. This study verifies the neodymium isotopic ratio (Nd/Nd) in Ruditapes philippinarum shells as a tracer of the geographic origin, based on the geochemical aspect that Nd/Nd of their habitats strongly depends on the geology of its catchment areas. The Nd/Nd ratios of clam shells from the Japanese and Chinese coastal areas displayed a heterogeneous pattern from local to international scales, reflecting the geological age of the catchment area. The blind test suggested that a part of Manila clam was sold with mislabeling in the Japanese market, demonstrating the high potential of Nd/Nd to unmask the fraud labeling in a food market. Our findings emphasize the potential of Nd/Nd as a tracer for the geographical origin of marine bivalves, and also as a strong deterrent against mislabeling.
贝类的地理溯源对于保证其质量、维护消费者和生产者利益变得越来越重要。本研究基于化学地球动力学原理，即贝类生境的 Nd/Nd 比值强烈依赖于其集水区的地质情况，验证了菲律宾蛤仔壳中钕同位素比值（Nd/Nd）作为地理来源示踪剂的可行性。来自日本和中国沿海地区的蛤壳的 Nd/Nd 比值在本地和国际范围内呈现出不均匀的模式，反映了集水区的地质年龄。盲测表明，日本市场上部分进口的马尼拉蛤存在标签错误的情况，这表明 Nd/Nd 具有揭示食品市场标签欺诈的巨大潜力。我们的研究结果强调了 Nd/Nd 作为海洋双壳类动物地理来源示踪剂的潜力，同时也为打击标签欺诈提供了有力手段。
