Data/hora: 24/06/2024 00:54:48

Biblioteca(s): | Embrapa Semiárido.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 3
Data corrente: | 26/02/2015
Data da última atualização: | 26/02/2015
Autoria: | ALMEIDA, J. R. G. da S.; SOUZA, A. V. de; SANTOS, U. S. dos; SOUZA, M. D. de; BISPO, L. dos P.; TURATTI, Z. C. C.; LOPES, N. P.
Afiliação: | JACKSON ROBERTO GUEDES DA SILVA ALMEIIDA, UNIVASF; ANA VALERIA VIEIRA DE SOUZA, CPATSA; UILIANE SOARES DOS SANTOS; MAZIELE DIAS DE SOUZA; LUMA DOS PASSOS BISPO; IZABEL CRISTINA CASANOVA TURATTF, USP; NORBERTO PEPORINE LOPES.
Título: | Chemical composition of essential oils from Croton conduplicatus (Euphorbiaceae) in two different seasons.
Ano de publicação: | 2014
Fonte/Imprenta: | Journal of Essential Oil Bearing Plants, v. 17, n. 6, p. 1137-1145, 2014.
DOI: | 10.1080/0972060X.2014.931254
Idioma: | Inglês
Conteúdo: | Croton conduplicatus is a species popularly known in the Brazilian Caatinga (Semi-Arid vegetation) as quebra faca. Essential oils from the fresh lea ves were obtained by hydrodistillation in two different seasons (dry and rainy seasons) after 2, 3 and 4 hour s of extraction. Analyses were made by GC-MS. The main compounds found in the oil of leaves collected in the dry season were 1,8-cineole, p-cymene, spathulenol and caryophyllene oxide. For the essential oil coll ected in rainy season the major constituents identified were 1,8-cineole, -phellandrene, bicyclogermacrene, (E)-caryophyllene and spathulenol. The antioxidant potential was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis-3- ethylbenzothiazoline-6-sulfonic acid (ABTS) scavengers methods, as well as the method of co-oxidation of -carotene/linoleic acid. A significant inhibitory effect of essential oils on ABTS free radicals was detected. C. conduplicatus is a natural source of antioxidants. The essential oils from the leaves contain constituents with antioxidative properties and could serve as inhibitors or scave ngers of free radicals
Palavras-Chave: | Atividade antioxidante; Bioma; Constituintes voláteis; Croton conduplicatus; Planta nativa; Quebra faca.
Thesagro: | Caatinga; Composição Química; Óleo essencial; Planta medicinal.
Thesaurus Nal: | Essential oils.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (54406-1) - UPC - AP - DD -  -  -  - DIS