Determination of the Geographic Origin of Asparagus by Inorganic Analysis

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  • Hattori Satoshi
    Food and Agricultural Materials Inspection Center, Kobe Regional Center
  • Funaki Norio
    Food and Agricultural Materials Inspection Center, Kobe Regional Center
  • Houmura Yuji
    Food and Agricultural Materials Inspection Center

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Other Title
  • 無機元素分析によるアスパラガスの産地判別
  • ムキ ゲンソ ブンセキ ニ ヨル アスパラガス ノ サンチ ハンベツ

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Abstract

A technique to determine the geographic origin of asparagus was examined using 64 samples from Japan and other countries. A total of 13 elements contained in asparagus were determined by inductively coupled plasma mass spectroscopy. The principal component analysis of the analytical results showed that the geographic origin of asparagus can be discriminated between Japan and other countries. We developed a linear discriminant analysis (LDA) model calibrated with analytical results of 6 elements (Co, Sr, Ca, Rb, Mo and Cu) chosen by a backward stepwise procedure. This LDA model identified the origin of asparagus from Japan with 97% certainty and those from abroad with 90% certainty.

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