Evaluation Method for Internal Quality of Leek and Their Variability

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  • IINO Tsukasa
    Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • SHIBUSAWA Sakae
    Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • OKAYAMA Tsuyoshi
    Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • UMEDA Hiroki
    Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • KOJIMA Yoichiro
    Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • KODAIRA Masakazu
    Faculty of Agriculture, Tokyo University of Agriculture and Technology

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Other Title
  • 長ネギの内部品質評価方法とその変動
  • ナガネギ ノ ナイブ ヒンシツ ヒョウカ ホウホウ ト ソノ ヘンドウ

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Abstract

In this study, the variability of solid soluble content (%Brix) of leek inside of an individual, among individuals, and at different growing areas was investigated as an indicator of internal quality. In addition, the time course of the %Brix in each growing area at different harvest timings were revealed. In consequence, %Brix of lower part of stalk was higher than that of higher part of stalk. This change of %Brix inside the stalk could be approximated by a power function. Coefficients of the power function expressed differences among growing areas and changes at different harvest timings. Therefore, these coefficients can be utilized as indicators for cultivation management and branding.

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