Seasonal variation of the chemical constituents from Croton species.
The terpenes, sterols, alkaloid (glaucine) and alpha-tocopherol show seasonal variation for Croton hemiargyreus hemiargyreus and Croton echinocarpus. The amounts of triterpenes are higher during the tropical summer and in most samples the major sesquiterpene was characterized as caryophyllene. The seasonal variation of glaucine showed a maximum between June and October for C. hemiargyreus, and was present only in January and June in C. echinocarpus.
dos Santos Pereira
A
A
Instituto de Qímica, Universidade Federal do Rio de Janeiro, Brazil.
Fernandes do Amaral
A C
AC
de Araujo Silva
M
M
de Aquino Neto
F R
FR
D001938:Brazil; D019665:Euphorbiaceae / Q000737:chemistry* / Q000502:physiology*; D008401:Gas Chromatography-Mass Spectrometry; D008519:Medicine, Traditional; D010840:Phytosterols / Q000737:chemistry / Q000302:isolation & purification*; D008517:Phytotherapy; D010946:Plants, Medicinal / Q000737:chemistry* / Q000502:physiology; D012621:Seasons; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014329:Tropical Climate
D010840:Phytosterols; D012717:Sesquiterpenes; D014315:Triterpenes