Amino Acids in the Honeydew Excreted by <i>Ceroplastes pseudoceriferus</i> (GREEN)

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  • TAMAKI Yoshio
    Tea Research Station Agricultural Chemicals Inspection Station, Ministry of Agriculture and Forestry

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  • ツノロウムシが分泌するhoneydew中のアミノ酸について
  • ツノロウムシ ガ ブンピツ スル honeydew チュウ ノ アミノサン ニ ツイテ エイブン

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Abstract

Amino acid compositions of the honeydew excreted by Ceroplastes pseudoceriferus (GREEN) and of the tea bark on which the scale insect lives, were analysed qualitatively by means of two dimensional paper chromatography.<br>Fourteen ninhydrin-positive substances were found in the honeydew and were identified as alpha-alanine, arginine, aspartic acid, cystine, glutamic acid, glycine, leucine (and/or isoleucine), lysine, phenylalanine, serine, threonine, tyrosine, valine, and theanine. One ninhydrin positive substance could not be identified.<br>In the tea bark, 7 to 10 amino acids were found, and identified as follows: alpha-alanine, arginine, aspartic acid, glutamic acid, glutamine, leucine (and/or isoleucine), serine, threonine, valine, and theanine.

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