Seasonal variation of the chemical constituents from Croton species

Authors
Pereira, AD do Amaral, ACF Silva, MD Neto, FRD
Citation
Ad. Pereira et al., Seasonal variation of the chemical constituents from Croton species, Z NATURFO C, 56(5-6), 2001, pp. 357-362
Citations number
17
Categorie Soggetti
Biochemistry & Biophysics
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES
ISSN journal
09395075 → ACNP
Volume
56
Issue
5-6
Year of publication
2001
Pages
357 - 362
Database
ISI
SICI code
0939-5075(200105/06)56:5-6<357:SVOTCC>2.0.ZU;2-K
Abstract
The terpenes, sterols. alkaloid (glaucine) and alpha -tocopherol show seaso nal variation for Croton hemiargyreus hemiargyreus and Croton echinocarpus. The amounts of triterpenes are higher during the tropical summer and in mo st samples the major sesquiterpene was characterized as caryophyllene. The seasonal variation of glaucine showed a maximum between June and October fo r C. hemiargyreus, and was present only in January and June in C. echinocar pus.