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HRGC-MS and HPLC-MS identification of new ketosterols in an extract of wheat straw

✍ Scribed by Chaves das Neves, Higuinaldo J. ;Gaspar, Elvira M. M. S.

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
414 KB
Volume
18
Category
Article
ISSN
0935-6304

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✦ Synopsis

An ethereal extract of wheat (Triticum aestivum) straw with a positive biological assay for allelopathic activity, has been analyzed by HRGC. By means of HRGC-MS the extract composition was assessed as a complex mixture of organic acids and sterolic compounds. The sterolic fraction was subsequently separated and further studied by HRGC-MS and HPLC-MS. Among the thirty seven components identified, some described for the first time in wheat straw, two new ketosterols were characterized by means of their MS spectra. The potential of the particle-heam (PB) interface in HPLC-MS studies of unknown mixtures is exemplified and compared with that of HRGC-MS.

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Identification of active compounds in wh
Identification of active compounds in wheat straw extracts with allelopathic activity by HRGC-MS and HRGC-FTIR
✍ das Neves, Higuinaldo J. Chaves ;Gaspar, Elvira M. Monteiro πŸ“‚ Article πŸ“… 1990 πŸ› John Wiley and Sons 🌐 English βš– 438 KB

## Abstract The allelopathic effects of decomposing wheat straw have been known for some time. In spite of the ecological and economical importance of the subject, only a limited number of compounds have been asociated with the allelopathic activity of wheat straw. In this study the high resolution