Using neodymium isotope ratio in Ruditapes philippinarum shells for tracking the geographical origin.

Kentaro Tanaka, Liqiang Zhao, Hirofumi Tazoe, Tsuyoshi Iizuka, Naoko Murakami-Sugihara, Kotaro Toyama, Toshihiro Yamamoto, Takefumi Yorisue, Kotaro Shirai

Food chemistry 2022 Jul 15

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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 (143Nd/144Nd) in Ruditapes philippinarum shells as a tracer of the geographic origin, based on the geochemical aspect that 143Nd/144Nd of their habitats strongly depends on the geology of its catchment areas. The 143Nd/144Nd 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 143Nd/144Nd to unmask the fraud labeling in a food market. Our findings emphasize the potential of 143Nd/144Nd as a tracer for the geographical origin of marine bivalves, and also as a strong deterrent against mislabeling. Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.

Citation

Kentaro Tanaka, Liqiang Zhao, Hirofumi Tazoe, Tsuyoshi Iizuka, Naoko Murakami-Sugihara, Kotaro Toyama, Toshihiro Yamamoto, Takefumi Yorisue, Kotaro Shirai. Using neodymium isotope ratio in Ruditapes philippinarum shells for tracking the geographical origin. Food chemistry. 2022 Jul 15;382:131914