Rapid and Selective Sample Preparation for the Chromatographic Determination of Brassinosteroids from Plant Material Using Solid-Phase Extraction Method.

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書誌事項

公開日
1994
DOI
  • 10.2116/analsci.10.913
公開者
社団法人 日本分析化学会

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説明

This report describes a rapid and selective method of sample preparation for the determination of brassinosteroids in samples of biological origin, based on solid-phase extraction. The steroids, brassinolide and castasterone, which possess a C-22, 23-diol group, were retained as their cyclic boronates formed on immobilized phenylboronic acid gel in a mixed solvent of pyridine and acetonitrile. After removal of impurities in the sample, parent brassinosteroids could easily be released from their boronates by a mixed solution of hydrogen peroxide and acetonitrile. The phenylboronic acid phase was shown to have a high affinity for brassinosteroids containing a C-22, 23-diol. The present method is a first example for the selective extraction of brassinosteroids in a biological sample using immobilized phenylboronic acid gel.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 10 (6), 913-917, 1994

    社団法人 日本分析化学会

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