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Mineral composition of frozen taro for determination of geographic origin

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Abstract

The mineral composition of frozen food of taro [Colocasia esculenta (L.) Schott] was analyzed to categorize the geographical production place of taro. The concentrations of Co and H2PO4 − were found to be useful to separate the producing place between Japan and China. The analysis was performed by instrumental neutron activation analysis (INAA) and ion chromatography (IC). In the case of INAA, the samples were dried and sealed in a vinyl bag and irradiated with thermal neutrons from JRR3M, installed at Japan Atomic Energy Agency (JAEA). The activated samples were cooled down for a few weeks and the elements (Co, Cr, Fe, Rb, Zn) were determined. Cobalt concentration of frozen taro from China was higher than that from Japan. The tendency was the same in the fresh sample of taro. When concentration of H2PO4 − of frozen sample was measured, taro from Japanese product was higher than that of Chinese one, contrary to fresh sample. This result might be caused by the leakage of H2PO4 − during freezing process, indicating that we should be careful to apply the discrimination indicators. In addition to Co, there was a significant difference of Rb and Fe concentrations between frozen taro from Japan and China.

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References

  1. Anderson KA, Smith BW (2002) J Agric Food Chem 50:2068–2075

    Article  CAS  Google Scholar 

  2. Anderson KA, Smith BW (2005) J Agric Food Chem 53:410–418

    Article  CAS  Google Scholar 

  3. Inoue H, Umemiya Y, Masuda K, Nakamura Y (2005) Jpn J Soil Sci Plant Nutr 76:441–447

    CAS  Google Scholar 

  4. Inoue H, Umemiya Y, Nakamura Y (2005) Jpn J Soil Sci Plant Nutr 76:875–880

    CAS  Google Scholar 

  5. Saito T, Tanoi K, Matsue H, Iikura H, Yamada Y, Seyama S, Masuda S, Nakanishi TM (2008) J Radioanal Nucl Chem 278:409–413

    Article  CAS  Google Scholar 

  6. Tanoi K, Matsue H, Iikura H, Saito T, Hayashi Y, Hamada H, Nishiyama H, Kobayashi NI, Nakanishi TM (2008) J Radioanal Nucl Chem 278:375–379

    Article  CAS  Google Scholar 

  7. Horn P, Holzl S, Todt W, Matthies D (1998) Isot Environ Health Stud 34:31–42

    Article  CAS  Google Scholar 

  8. Kawasaki A, Oda H, Hirata T (2002) Soil Sci Plant Nutr 48:635–640

    Article  CAS  Google Scholar 

  9. Ariyama K, Nishida T, Noda T, Kadokura M, Yasui A (2006) J Agric Food Chem 54:3341–3350

    Article  CAS  Google Scholar 

  10. Hu Y, Burucs Z, Schmidhalter U (2008) Soil Sci Plant Nutr 54:133–141

    Article  CAS  Google Scholar 

  11. Kobayashi NI, Tanoi K, Hirose A, Saito T, Noda A, Iwata N, Nakano A, Nakamura S, Nakanishi TM (2011) J Agric Food Chem 59(9):4412–4417

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan

    Yoshimi Ohmae, Natsuko I. Kobayashi, Keitaro Tanoi, Atsushi Hirose, Takayuki Saito, Akihiko Noda, Naoko Iwata & Tomoko M. Nakanishi

  2. Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan

    Keitaro Tanoi

  3. National Agriculture and Food Research Organization, 3-1-1 Kannondai, Tsukuba, Ibaraki, 305-8517, Japan

    Akimasa Nakano

  4. Food Labeling Monitoring Department, Food and Agricultural Materials Inspection Center, 2-1-12 Kannondai, Tsukuba, Ibaraki, 305-8642, Japan

    Satoru Nakamura

Authors
  1. Yoshimi Ohmae
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  2. Natsuko I. Kobayashi
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  3. Keitaro Tanoi
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  4. Atsushi Hirose
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  5. Takayuki Saito
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  6. Akihiko Noda
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  7. Naoko Iwata
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  8. Akimasa Nakano
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  9. Satoru Nakamura
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  10. Tomoko M. Nakanishi
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Corresponding author

Correspondence to Keitaro Tanoi.

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Ohmae, Y., Kobayashi, N.I., Tanoi, K. et al. Mineral composition of frozen taro for determination of geographic origin. J Radioanal Nucl Chem 291, 241–244 (2012). https://doi.org/10.1007/s10967-011-1249-x

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  • DOI: https://doi.org/10.1007/s10967-011-1249-x

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