Essential oil from leaves of Cryptocarya mandioccana Meisner (Lauraceae): Composition and intraspecific chemical variability


Autoria(s): Telascrea, Marcelo; de Araujo, Carla C.; Marques, Marcia O. M.; Facanali, Roselaine; de Moraes, Pedro L. R.; Cavalheiro, Alberto José
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/04/2007

Resumo

The composition of the essential oil from leaves of Cryptocarya mandioccana has been determined by chromatographic fractionation and GC-FID, GC-MS and C-13 NMR analyses, yielding the identification of 64 compounds with predominance of isomeric sesquiterpenes with molecular weights of 204. The main components of the oil obtained by hydrodistillation were beta-caryophyllene, spathulenol, caryophyllene oxide, delta-cadinene, germacrene D, benzaldehyde and bicyclogermacrene. However, the oil obtained by steam distillation contained higher levels of sesquiterpene hydrocarbons, with predominance of P-caryophyllene (C), germacrene D (G) and bicyclogermacrene (B), and was considered to be more representative of the composition of the oil in its natural state. The intraspecific chemical variability of the essential oil obtained by steam distillation was evaluated within populations of trees growing at three separate locations in the state of São Paulo, Brazil. Three distinct chemical groups could be characterised due to differences in the relative percentages of the three main sesquiterpenes from essential oil: CGB [relative contents of C (14-34%), G (5-28%), B (8-15%)], BCG [B (17-34%), C (9-24%), G (12-25%)] and GCB [G (22-42%), C (4-17%), B (7-15%)]. Individuals from groups CGB and BCG were found to be more frequent at south locations while group GCB is predominant in north location. (c) 2006 Elsevier Ltd. All rights reserved.

Formato

222-232

Identificador

http://dx.doi.org/10.1016/j.bse.2006.09.015

Biochemical Systematics and Ecology. Oxford: Pergamon-Elsevier B.V., v. 35, n. 4, p. 222-232, 2007.

0305-1978

http://hdl.handle.net/11449/38499

10.1016/j.bse.2006.09.015

WOS:000245696000006

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Biochemical Systematics and Ecology

Direitos

closedAccess

Palavras-Chave #Cryptocarya mandioccana #Lauraceae #essential oil #monoterpenes #sesquiterpenes #retention index #intraspecific variability
Tipo

info:eu-repo/semantics/article