Documents disponibles écrits par cet auteur

Antimicrobial activity of essential oils from aromatic plants grown in the mediterranean area / Luca Tommasi in The journal of essential oil research, Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 185-189 Titre : Antimicrobial activity of essential oils from aromatic plants grown in the mediterranean area Type de document : texte imprimé Auteurs : Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Antonio Miceli, Auteur Article en page(s) : pp. 185-189 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymbra  capitata  Origanum  vulgare  subsp.  hirtum  Rosmarinus  officinalis  Satureja  cuneifolia  Lamiaceae  Essential  oil  composition  α-pinene  γ-terpinene  p-cymene  1,8-cineole  Linalool  Borneol  Thymol  Antimicrobical  activity Index. décimale : 646 Résumé : The chemical composition and antimicrobial activity of the essential oils isolated from four Lamiaceae [Thymbra capitata (L.) Cav., Origanum vulgare L. subsp. hirtum (Link) Ietsw., Rosmarinus officinalis L. and Satureja cuneifolia Ten.] harvested at three different vegetative stages, spontaneously growing in the South of Puglia, towards Gram-(+)ve and Gram-(-)ve bacteria and pathogenic yeasts were evaluated. The four oils were analyzed by GC-FID and GC/MS, and exhibited similarities and differences with respect to data reported in the literature. Specifically, T. capitata and O. vulgare subsp. hirtum oils were found to be rich in thymol (60.9–67.5% and 29.8–56.8%, respectively) and R. officinalis oil had large amounts of 1,8-cineole (8.0–51.3%) and α-pinene (3.9–31.4%). The composition of the oil of S. cuneifolia varied most of all, its main constituents being linalool (9.6–32.7%), borneol (12.9–24.0%) and α-pinene (9.5–11.7%). Each of the oils was found to possess some antimicrobial properties using the agar diffusion method. The effectiveness and behavioral specificity varied from one species to another, and within each species, in relation to the vegetative period and the microorganism tested. The most effective oils were those of O. vulgare subsp. hirtum and T. capitata. The latter was also biologically active towards P. aeruginosa which was not sensitive to either R. officinalis or S. cuneifolia oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Antimicrobial activity of essential oils from aromatic plants grown in the mediterranean area [texte imprimé] / Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Antonio Miceli, Auteur . - pp. 185-189. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 185-189 Mots-clés : Thymbra  capitata  Origanum  vulgare  subsp.  hirtum  Rosmarinus  officinalis  Satureja  cuneifolia  Lamiaceae  Essential  oil  composition  α-pinene  γ-terpinene  p-cymene  1,8-cineole  Linalool  Borneol  Thymol  Antimicrobical  activity Index. décimale : 646 Résumé : The chemical composition and antimicrobial activity of the essential oils isolated from four Lamiaceae [Thymbra capitata (L.) Cav., Origanum vulgare L. subsp. hirtum (Link) Ietsw., Rosmarinus officinalis L. and Satureja cuneifolia Ten.] harvested at three different vegetative stages, spontaneously growing in the South of Puglia, towards Gram-(+)ve and Gram-(-)ve bacteria and pathogenic yeasts were evaluated. The four oils were analyzed by GC-FID and GC/MS, and exhibited similarities and differences with respect to data reported in the literature. Specifically, T. capitata and O. vulgare subsp. hirtum oils were found to be rich in thymol (60.9–67.5% and 29.8–56.8%, respectively) and R. officinalis oil had large amounts of 1,8-cineole (8.0–51.3%) and α-pinene (3.9–31.4%). The composition of the oil of S. cuneifolia varied most of all, its main constituents being linalool (9.6–32.7%), borneol (12.9–24.0%) and α-pinene (9.5–11.7%). Each of the oils was found to possess some antimicrobial properties using the agar diffusion method. The effectiveness and behavioral specificity varied from one species to another, and within each species, in relation to the vegetative period and the microorganism tested. The most effective oils were those of O. vulgare subsp. hirtum and T. capitata. The latter was also biologically active towards P. aeruginosa which was not sensitive to either R. officinalis or S. cuneifolia oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Essential oil of melissa romana (Miller) grown in southern apulia (Italy) / Antonio Miceli in The journal of essential oil research, Vol. 18 N° 5 (Septembre-Octobre 2006) 

Public ISBD [article]  in The journal of essential oil research > Vol. 18 N° 5 (Septembre-Octobre 2006) . - pp. 473-475 Titre : Essential oil of melissa romana (Miller) grown in southern apulia (Italy) Type de document : texte imprimé Auteurs : Antonio Miceli, Auteur ; Carmine Negro, Auteur ; Luca Tommasi, Auteur Année de publication : 2006 Article en page(s) : pp. 473-475 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Melissa  romana  Lamiaceae  Essential  oil  composition  β-caryophyllene  Cumene  β-pinene  Citral Résumé : The composition of the essential oil obtained from flowering tops of Melissa romana Miller wild grown in Southern Apulia (Italy) was investigated by GC and GC/MS. More than 90% of the compounds were characterized. β-Caryophyllene (15.8%), cumene (14.0%), β-pinene (12.0%) and citral (neral + geranial, 12.0%) were the major constituents of the oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699144#.UXVQi0qC5mM [article] Essential oil of melissa romana (Miller) grown in southern apulia (Italy) [texte imprimé] / Antonio Miceli, Auteur ; Carmine Negro, Auteur ; Luca Tommasi, Auteur . - 2006 . - pp. 473-475. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 5 (Septembre-Octobre 2006) . - pp. 473-475 Mots-clés : Melissa  romana  Lamiaceae  Essential  oil  composition  β-caryophyllene  Cumene  β-pinene  Citral Résumé : The composition of the essential oil obtained from flowering tops of Melissa romana Miller wild grown in Southern Apulia (Italy) was investigated by GC and GC/MS. More than 90% of the compounds were characterized. β-Caryophyllene (15.8%), cumene (14.0%), β-pinene (12.0%) and citral (neral + geranial, 12.0%) were the major constituents of the oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699144#.UXVQi0qC5mM

Essential oil variability of satureja cuneifolia ten. growing wild in southern puglia (Italy) / Luca Tommasi in The journal of essential oil research, Vol. 20 n°4 (Juillet/Août 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 295-302 Titre : Essential oil variability of satureja cuneifolia ten. growing wild in southern puglia (Italy) Type de document : texte imprimé Auteurs : Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Luigi De Bellis, Auteur Année de publication : 2008 Article en page(s) : pp. 295-302 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Satureja  cuneifolia  Lamiaceae  Essential  oil  composition  Chemotypes  Linalool  Borneol  α-pinene Résumé : Satureja cuneifolia Ten. spontaneously growing in 12 sites in Southern Puglia (Italy), was characterized on the basis of its essential oil composition. Qualitative and quantitative analyses of steam-distilled oil were performed by GC and GC/MS. Cluster analysis made it possible to identify four different chemotypes: linalool, borneol, α-pinene, and borneol/α-pinene. Principal Component Analysis (PCA) highlighted the relations existing between the compounds that constitute the essential oils. Moreover, spatial autocorrelation, evaluated in the space described by the principal components, was used to analyse the relationships between chemical polymorphism and certain large-scale environmental conditions proper to sampling sites. Specifically, the arrangement of values in relation to Yearly Rainfall (YR) was found not to be random: the findings showed that increased water availability in the soil causes an arise in the presence of the borneol chemotype. In contrast, reduced water availability is directly correlated with the presence of the linalool and α-pinene chemotypes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700017 [article] Essential oil variability of satureja cuneifolia ten. growing wild in southern puglia (Italy) [texte imprimé] / Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Luigi De Bellis, Auteur . - 2008 . - pp. 295-302. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 295-302 Mots-clés : Satureja  cuneifolia  Lamiaceae  Essential  oil  composition  Chemotypes  Linalool  Borneol  α-pinene Résumé : Satureja cuneifolia Ten. spontaneously growing in 12 sites in Southern Puglia (Italy), was characterized on the basis of its essential oil composition. Qualitative and quantitative analyses of steam-distilled oil were performed by GC and GC/MS. Cluster analysis made it possible to identify four different chemotypes: linalool, borneol, α-pinene, and borneol/α-pinene. Principal Component Analysis (PCA) highlighted the relations existing between the compounds that constitute the essential oils. Moreover, spatial autocorrelation, evaluated in the space described by the principal components, was used to analyse the relationships between chemical polymorphism and certain large-scale environmental conditions proper to sampling sites. Specifically, the arrangement of values in relation to Yearly Rainfall (YR) was found not to be random: the findings showed that increased water availability in the soil causes an arise in the presence of the borneol chemotype. In contrast, reduced water availability is directly correlated with the presence of the linalool and α-pinene chemotypes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700017

Influence of environmental factors on essential oil variability in thymbra capitata (L.) cav. growing wild in southern puglia (Italy) / Luca Tommasi 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. 572-580 Titre : Influence of environmental factors on essential oil variability in thymbra capitata (L.) cav. growing wild in southern puglia (Italy) Type de document : texte imprimé Auteurs : Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Antonio Cerfeda, Auteur Année de publication : 2008 Article en page(s) : pp. 572-580 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymbra  capitata  Lamiaceae  Essential  oil  composition  Thymol  Carvacrol  Chemotypes  Environmental  variation Résumé : The composition of officinal plants in terms of active principles exhibits high intraspecific variability which is determined not only genetically but also by environmental conditions, growth area and harvesting time. This study analyzed the essential oil variability in Thymbra capitata (L.) Cav. in specimens growing wild in 23 places in Southern Puglia (Italy). The results show high chemical polymorphism in the oil content of T. capitata. Application of the spatial autocorrelation index to the principal components highlighted a relationship between thermal parameters and the composition in terms of active principles. The carvacrol chemotype was only present under the hottest and driest conditions. These results show that not only is the biosynthetic pathway of phenolic monoterpenes in T. capitata favored in high-temperature environments, as reported in other Lamiaceae, but also that carvacrol is present only in markedly “Mediterranean-like” environments. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699335#.UXJrbkqC5mM [article] Influence of environmental factors on essential oil variability in thymbra capitata (L.) cav. growing wild in southern puglia (Italy) [texte imprimé] / Luca Tommasi, Auteur ; Carmine Negro, Auteur ; Antonio Cerfeda, Auteur . - 2008 . - pp. 572-580. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°6 (Novembre/Decembre 2007) . - pp. 572-580 Mots-clés : Thymbra  capitata  Lamiaceae  Essential  oil  composition  Thymol  Carvacrol  Chemotypes  Environmental  variation Résumé : The composition of officinal plants in terms of active principles exhibits high intraspecific variability which is determined not only genetically but also by environmental conditions, growth area and harvesting time. This study analyzed the essential oil variability in Thymbra capitata (L.) Cav. in specimens growing wild in 23 places in Southern Puglia (Italy). The results show high chemical polymorphism in the oil content of T. capitata. Application of the spatial autocorrelation index to the principal components highlighted a relationship between thermal parameters and the composition in terms of active principles. The carvacrol chemotype was only present under the hottest and driest conditions. These results show that not only is the biosynthetic pathway of phenolic monoterpenes in T. capitata favored in high-temperature environments, as reported in other Lamiaceae, but also that carvacrol is present only in markedly “Mediterranean-like” environments. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699335#.UXJrbkqC5mM