Endocrocin and Its Derivatives from the Japanese Mealybug<i>Planococcus kraunhiae</i>

  • KIKUCHI Naoya
    Department of Applied Biological Chemistry, The University of Tokyo
  • TESHIBA Mayumi
    Division of Entomology and Phytopathology, Fukuoka Prefecture Agriculture Research Center
  • TSUTSUMI Takafumi
    Division of Entomology and Phytopathology, Fukuoka Prefecture Agriculture Research Center
  • FUDOU Ryosuke
    Institute of Life Science, Ajinomoto Co., Inc.
  • NAGASAWA Hiromichi
    Department of Applied Biological Chemistry, The University of Tokyo
  • SAKUDA Shohei
    Department of Applied Biological Chemistry, The University of Tokyo

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  • Endocrocin and Its Derivatives from the Japanese Mealybug Planococcus kraunhiae

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The Japanese mealybug, Planococcus kraunhiae, is suitable as a model insect for biosynthetic studies on mealybug pigments. Four yellow pigments, including two novel ones, were isolated from the mealybug bodies and characterized as endocrocin, a dicarboxylic acid named fujikonaic acid (1), emodin 1-O-β-D-glucopyranoside and 7-hydroxyemodin 1-O-β-D-glucopyranoside (2). The enzymatic activity of emodin 1-O-glucosyltransferase was observed in the extracts of insect bodies.

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