%0 Journal Article
%T Chemical Composition and Antioxidant Activity of Essential Oils from Cinnamodendron dinisii Schwacke and Siparuna guianensis Aublet
%A Milene Aparecida Andrade
%A Maria das Gra£¿as Cardoso
%A Juliana de Andrade
%A Lucilene Fernandes Silva
%A Maria Luisa Teixeira
%A Juliana Maria Val¨¦rio Resende
%A Ana Cristina da Silva Figueiredo
%A Jos¨¦ Gon£¿alves Barroso
%J Antioxidants
%D 2013
%I MDPI AG
%R 10.3390/antiox2040384
%X The objectives of this study were to chemically characterize and evaluate the antioxidant activity of essential oils Cinnamodendron dinisii Schwacke (pepper) and Siparuna guianensis Aublet (negramina). The essential oil was isolated by hydrodistillation using a Clevenger modified apparatus, and the identification and quantification of constituents, through GC/MS and GC-FID analysis. The antioxidant activity was evaluated using ¦Â-carotene/linoleic acid system and the DPPH radical sequestering method. In chromatographic analysis, the majority constituents found in the essential oil of C. dinisii were bicyclic monoterpenes, ¦Á-pinene (35.41%), ¦Â-pinene (17.81%), sabinene (12.01%) and sesquiterpene bicyclogermacrene (7.59%). In the essential oil of the fresh leaves of Siparuna guianensis Aublet, acyclic monoterpene, ¦Â-myrcene (13.14%), and sesquiterpenes, germacrene-D (8.68%) and bicyclogermacrene (16.71%) were identified. The antioxidant activity was low by the ¦Â-carotene/linoleic acid test and was not evidenced by the DPPH test, for both oils evaluated.
%K volatile oils
%K chemical composition
%K free radicals
%U http://www.mdpi.com/2076-3921/2/4/384