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Composition and chemical variability in the essential oil of hyptis marrubioides epl. / Juliana F. Sales in The journal of essential oil research, Vol. 19 N°6 (Novembre/Decembre 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°6 (Novembre/Decembre 2007) . - pp. 552-556 Titre : Composition and chemical variability in the essential oil of hyptis marrubioides epl. Type de document : texte imprimé Auteurs : Juliana F. Sales, Auteur ; José Eduardo B. P. Pinto, Auteur ; Priscila P. Botrel, Auteur Année de publication : 2008 Article en page(s) : pp. 552-556 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Hyptis  marrubioides  Lamiaceae  Essential  oil  composition  Caryophylla-4(14),8(15)-dien-5β-ol  Eudesma-4(15),7-dien-1β-ol  α-copaene  β-caryophyllene  Epi-longipinanol  Caryophyllene  oxide  Chemical  variability  Canonical  discriminant  analysis Résumé : The essential oils from stems and leaves (fresh or dried, and whole or sliced) of Hyptis marrubioides collected from two localities of Brazilian Cerrado were investigated by GC and GC/MS. Caryophylla-4(14),8(15)-dien-5β-ol, eudesma-4(15),7-dien-1β-ol, caryophyllene oxide and β-caryophyllene were the principal constituents. The results were submitted to Principal Component and Cluster analysis which allowed three groups of oils to be distinguished with respect to sampling site and post-harvested process: cluster I (fresh leaves and fresh or dried stems from Lavras site) with high percentage of caryophylla-4(14),8(15)-dien-5β-ol (16.7%) and eudesma-4(15),7-dien-1β-ol (12.8%); cluster II (dried leaves and stems from Tiradentes site) with epi-longipinanol (16.2%) rich oil, and cluster III (dried leaves from Lavras) containing a high content of β-caryophyllene (17.4%) and α-copaene (10.1%). Canonical discriminant analysis showed that is possible to accurately predict 100% well-classification in the original clusters using β-caryophyllene, epi-longipinanol and caryophylla-4(14),8(15)-dien-5β-ol as predictor variables. The whole or sliced plant materials resulted in similar chemical composition. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699329#.UXJbRUqC5mM [article] Composition and chemical variability in the essential oil of hyptis marrubioides epl. [texte imprimé] / Juliana F. Sales, Auteur ; José Eduardo B. P. Pinto, Auteur ; Priscila P. Botrel, Auteur . - 2008 . - pp. 552-556. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°6 (Novembre/Decembre 2007) . - pp. 552-556 Mots-clés : Hyptis  marrubioides  Lamiaceae  Essential  oil  composition  Caryophylla-4(14),8(15)-dien-5β-ol  Eudesma-4(15),7-dien-1β-ol  α-copaene  β-caryophyllene  Epi-longipinanol  Caryophyllene  oxide  Chemical  variability  Canonical  discriminant  analysis Résumé : The essential oils from stems and leaves (fresh or dried, and whole or sliced) of Hyptis marrubioides collected from two localities of Brazilian Cerrado were investigated by GC and GC/MS. Caryophylla-4(14),8(15)-dien-5β-ol, eudesma-4(15),7-dien-1β-ol, caryophyllene oxide and β-caryophyllene were the principal constituents. The results were submitted to Principal Component and Cluster analysis which allowed three groups of oils to be distinguished with respect to sampling site and post-harvested process: cluster I (fresh leaves and fresh or dried stems from Lavras site) with high percentage of caryophylla-4(14),8(15)-dien-5β-ol (16.7%) and eudesma-4(15),7-dien-1β-ol (12.8%); cluster II (dried leaves and stems from Tiradentes site) with epi-longipinanol (16.2%) rich oil, and cluster III (dried leaves from Lavras) containing a high content of β-caryophyllene (17.4%) and α-copaene (10.1%). Canonical discriminant analysis showed that is possible to accurately predict 100% well-classification in the original clusters using β-caryophyllene, epi-longipinanol and caryophylla-4(14),8(15)-dien-5β-ol as predictor variables. The whole or sliced plant materials resulted in similar chemical composition. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699329#.UXJbRUqC5mM

Seasonal variation in essential oils of lychnophora pinaster mart. / Erika S. Reis in The journal of essential oil research, Vol. 22 N° 2 (Mars/Avril 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 2 (Mars/Avril 2010) . - pp.147 - 149 Titre : Seasonal variation in essential oils of lychnophora pinaster mart. Type de document : texte imprimé Auteurs : Erika S. Reis, Auteur ; José Eduardo B. P. Pinto, Auteur ; Suzan K. V. Bertolucci, Auteur Année de publication : 2010 Article en page(s) : pp.147 - 149 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Lychnophora  pinaster  Asteraceae  Essential  oil  composition  Seasonal  variation  Methyl  (E)-cinnamate Index. décimale : 646 Résumé : The hydrodistilled essential oil from aerial parts of Lychnophora pinaster Mart. was analyzed by GC and GC/MS. Plants were collected at 3-month intervals in a completely randomized design with six repetitions and the data was analyzed at the level of 5% of probability by Tukey’s test. There was a significant difference for oil contents in the different seasons. The lowest oil content was obtained in the summer (about 50% inferior to the other seasons). Methyl (E)-cinnamate was obtained as the major compound (86–90%) of the 14 identified components. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/50 [article] Seasonal variation in essential oils of lychnophora pinaster mart. [texte imprimé] / Erika S. Reis, Auteur ; José Eduardo B. P. Pinto, Auteur ; Suzan K. V. Bertolucci, Auteur . - 2010 . - pp.147 - 149. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 2 (Mars/Avril 2010) . - pp.147 - 149 Mots-clés : Lychnophora  pinaster  Asteraceae  Essential  oil  composition  Seasonal  variation  Methyl  (E)-cinnamate Index. décimale : 646 Résumé : The hydrodistilled essential oil from aerial parts of Lychnophora pinaster Mart. was analyzed by GC and GC/MS. Plants were collected at 3-month intervals in a completely randomized design with six repetitions and the data was analyzed at the level of 5% of probability by Tukey’s test. There was a significant difference for oil contents in the different seasons. The lowest oil content was obtained in the summer (about 50% inferior to the other seasons). Methyl (E)-cinnamate was obtained as the major compound (86–90%) of the 14 identified components. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/50

Yield and composition of the essential oil of ocimum selloi benth. cultivated under colored netting / Larissa C. B. Costa in The journal of essential oil research, Vol. 22 N° 1 (Janvier/Fevrier 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 34-39 Titre : Yield and composition of the essential oil of ocimum selloi benth. cultivated under colored netting Type de document : texte imprimé Auteurs : Larissa C. B. Costa, Auteur ; José Eduardo B. P. Pinto, Auteur ; Evaristo M. Castro, Auteur Article en page(s) : pp. 34-39 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ocimum  selloi  Lamiaceae  Essential  oil  composition  Methyl  chavicol  Glandular  trichomes Index. décimale : 646 Résumé : The objective of the present work was to determine the effects of colored shading on the density of glandular and tectorial trichomes, and on the yield, productivity and composition of the essential oil of Ocimum selloi Benth. Plants were cultivated for 90 days under full sunlight or under ChromatiNet 50% red or blue netting. The highest density of glandular trichomes was observed in plants that had received full sunlight. None of the light treatments altered the yield of oil, although productivity was higher in plants grown under full sunlight by virtue of the greater leaf biomass that accumulated under such conditions. The compositions of the oils varied according to the quality of light. Although the qualitative profiles of the oils of plants grown under full sunlight or red shading were similar, that obtained from plants grown under blue shading presented a larger number of constituents. The highest level of methyl chavicol (93.2%), the major component of the oil, was observed in plants grown under full sunlight. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47 [article] Yield and composition of the essential oil of ocimum selloi benth. cultivated under colored netting [texte imprimé] / Larissa C. B. Costa, Auteur ; José Eduardo B. P. Pinto, Auteur ; Evaristo M. Castro, Auteur . - pp. 34-39. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 34-39 Mots-clés : Ocimum  selloi  Lamiaceae  Essential  oil  composition  Methyl  chavicol  Glandular  trichomes Index. décimale : 646 Résumé : The objective of the present work was to determine the effects of colored shading on the density of glandular and tectorial trichomes, and on the yield, productivity and composition of the essential oil of Ocimum selloi Benth. Plants were cultivated for 90 days under full sunlight or under ChromatiNet 50% red or blue netting. The highest density of glandular trichomes was observed in plants that had received full sunlight. None of the light treatments altered the yield of oil, although productivity was higher in plants grown under full sunlight by virtue of the greater leaf biomass that accumulated under such conditions. The compositions of the oils varied according to the quality of light. Although the qualitative profiles of the oils of plants grown under full sunlight or red shading were similar, that obtained from plants grown under blue shading presented a larger number of constituents. The highest level of methyl chavicol (93.2%), the major component of the oil, was observed in plants grown under full sunlight. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47