Stable Isotope Ratios as a Potential Tool for Verifying the Geographical Origin of Domestic and Imported Beef in Japan

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  • Nakashita Rumiko
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Suzuki Yaeko
    Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University
  • Akamatsu Fumikazu
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • Obara Kazuhito
    JA ZEN-NOH MEAT FOODS CO., LTD.
  • Korenaga Takashi
    Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University

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  • 安定同位体比解析による国産・豪州産・米国産牛肉の産地判別の可能性
  • アンテイ ドウイタイヒ カイセキ ニ ヨル コクサン ゴウシュウサン ベイコクサン ギュウニク ノ サンチ ハンベツ ノ カノウセイ

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Abstract

In the present study, carbon, nitrogen, and oxygen isotope ratios of beef from Japan, Australia, and the USA, were examined as potential tools for verifying the geographical origin of beef commercially distributed in Japan. Beef from the USA is characterized by a higher carbon isotope ratio (-12.6±1.0‰, mean±sd), than beef from Japan (-19.3±0.5‰) and Australia (-22.1±1.5‰). Furthermore, beef from Australia is characterized as having a higher oxygen isotope ratio (+17.2±1.1‰) than beef from Japan (+10.4±1.0‰) and the USA (+10.8±1.1‰). The present results suggest that carbon and oxygen stable isotope analysis is applicable as a tool for determining the geographical origin of beef.

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