Contribution to the knowledge of Nigerian medicinal plants : III. Chromatographic studies on Zingiber officinale Roscoe
✍ Scribed by M. Kučera; H. Kučerová
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 627 KB
- Volume
- 93
- Category
- Article
- ISSN
- 1873-3778
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✦ Synopsis
By using TLC and column chromatography, four groups possessing a hot taste were separated from ginger extracts. Those constituents isolated on a column were free from fluorescence. The specific detection of the isolated constituents was achieved with either 2,4+-dinitrophenylhydrazine or Barton's reagent. Characteristic detection was achieved by spraying first with 2,4_dinitrophenylhydrazine
and then with anisaldehyde.
The hot principle was obtained in a rich fraction on a silica gel column with n-hexane-ethyl acetate (I : 1). The volatile oil (the yield from commercial Nigerian rhizomes was 1.25%) was also partitioned and the isolation of the phenolic hot principles on an ion-exchange resin was studied.