Fate of <i>O</i>, <i>O</i>-Dimethyl <i>O</i>-(3-methyl-4-methylmercaptophenyl) Thiophosphate Sprayed on Tea and Cabbage Leaves

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  • 茶ならびにカンランに散布した<i>O</i>,<i>O</i>-dimethyl <i>O</i>-(3-methyl-4-methylmercaptophenyl) thiophosphateの消長
  • チャ ナラビニ カンラン ニ サップ シタ O , O-dimethyl O- 3-methyl-4-methylmercaptophenyl thiophosphate ノ ショウチョウ エイブン

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Abstract

The behavior of 32P-labeled Baycid was compared between tea leaves and cabbage leaves, and the residue of Baycid or its metabolites in tea leaves before and after the manufacturing process of green tea was also examined.<br>1. It was probable that the penetration rate of Baycid into leaf tissues was more rapid in cabbage leaves than in tea leaves, and that the metabolic rate of Baycid was also rapid in cabbage leaves.<br>2. In tea leaves, PS-sulfoxide and PS-sulfone was detected as the main metabolites of Baycid and the appearance of the other chloroform extractable metabolites was a little, while in cabbage leaves, the distribution of the metabolites was rather different from that of tea leaves, and the appearance of the metabolite which suggested the oxidation of thiophosphate to phosphate was clear.<br>3. The absolute amount and the distribution of the metabolites in green tea were hardly changed before and after the manufacturing process of green tea.

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