Residue Analysis of Oleic Acid in Cucumber Fruits after Spraying Sodium Oleate Solution

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  • FUJII Masanobu
    School of Medical Sciences, The University of Tokushima
  • TOKUMURA Akira
    Faculty of Pharmaceutical Sciences, The University of Tokushima
  • TSUTSUMI Toshihiko
    Faculty of Pharmaceutical Sciences, The University of Tokushima
  • TSUKATANI Hiroaki
    Faculty of Pharmaceutical Sciences, The University of Tokushima
  • KANO Mikio
    Otsuka Chemical Co., Ltd., Agrochemicals Research and Development Department
  • TANAKA Akira
    Otsuka Chemical Co., Ltd., Agrochemicals Research and Development Department

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Other Title
  • オレイン酸ナトリウム液剤のキュウリ果実中での残留分析
  • オレイン酸ナトリウム液剤のキュウリ果実中での残留分析〔英文〕
  • オレインサン ナトリウム エキザイ ノ キュウリ カジツチュウ デ ノ ザンリ

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Description

Residue of cis-9-octadecenoic acid (ODA) was studied by gas chromatographic analysis of cucumber fruit sprayed with sodium oleate (20% liquid formulation), an aphicide under development at present in our laboratory. Endogenous ODA was 0.33 and 0.37ppm in two cultivars of cucumber fruit. Residue levels on the first day after last spraying were 1.81 and 3.57ppm, and on the third day they lowered to 0.88 and 1.01ppm. Recovery of ODA from untreated cucumber fruit to which 2.5ppm ODA had been added was in a range of 102.0 to 108.4%.

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