Structural Characterization of Abscisic Acid and Related Metabolites by Chemical Ionization Mass Spectrometry

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概要

• 論文の詳細を見る

• Conjugated metabolites of abscisic acid (ABA) have been characterized by their chemical ionization (CI) mass spectra using isobutane and ammonia as reagent gases. The CI mass spectra usually consist of quasimolecular ions ([QM]+), and constituent aglycone- and.sugar-derived ions. Hence, the spectra are simply interpreted and afford useful information for structutal characterization. CI examinations of ABA and its unconjugated metabolites and collisionally activated dissociation (CAD) measurements of selected ions were helpful in characterizing the constituent aglycones. The distinction between the two glycosidal forms, glycoside and glycosyl ester, has been also discussed in the corresponding conjugates. Confirmation of the fragmentation pathways via recognition of the diagnostic ions can be madeby the extensive use of ammonia-d3 as an additional reagent gas.

• 社団法人 日本農芸化学会の論文

著者

• Koshimizu Koichi

  Faculty Of Agriculture Kyoto University

• Hirai Nobuhiro

  Faculty of Agriculture, Kyoto University

• Harada Ken-ichi

  Faculty Of Pharmacy Meijo University

• Takeda Naohito

  Faculty Of Pharmacy Meijo University

• Tatematsu Akira

  Faculty Of Pharmacy Meijo University

• Suzuki Makoto

  Faculty Of Engineering Niigata University

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