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Antimicrobial activities of essential oils of mint and peppermint as well as some of their main compounds / Leopold Jirovetz in The journal of essential oil research, Vol. 21 N° 4 (Juillet/Août 2009) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N° 4 (Juillet/Août 2009) . - pp. 363-366 Titre : Antimicrobial activities of essential oils of mint and peppermint as well as some of their main compounds Type de document : texte imprimé Auteurs : Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Stefanie Bail, Auteur Article en page(s) : pp. 363-366 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Mentha  canadensis  Mentha  piperita  Lamiaceae  Essential  oil  composition  Menthol  Menthone  Antimicrobial  activity  Menthyl  acetate  1,8-cineole  Limonene  β-pinene  β-caryophyllene  Eugenol Index. décimale : 646 Résumé : The oil of peppermint (Mentha x piperita L.) from the USA, a dementholized cornmint oil (M. canadensis L.), and a fraction of the dementholized cornmint oil were analyzed by GC-FID and GC/MS. The main constituents of the three samples analyzed were menthone (23.4%, 20.4% and 58.3%, respectively) and menthol (40.7%, 41.2% and 12.3%, respectively). The two oils, the cornmint oil fraction and seven mint oil compounds [(-)-menthol, (-)-menthone, (+/-)-menthyl acetate, 1,8-cineole, limonene, β-pinene and β-caryophyllene] were investigated for their antimicrobial effects against two Gram-positive bacteria (Staphylococcus aureus and Enterococcus faecalis), five Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumoniae and Salmonella sp.) and the yeast Candida albicans using a modified agar dilution and agar diffusion method. Medium to high antimicrobial effects were found for both oils, the dementholized cornmint oil fraction, and the target-compounds against all Gram-positive bacteria, whereas against the Gram-negative bacteria and the yeast, one or more samples showed only weak or no activity. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Antimicrobial activities of essential oils of mint and peppermint as well as some of their main compounds [texte imprimé] / Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Stefanie Bail, Auteur . - pp. 363-366. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 4 (Juillet/Août 2009) . - pp. 363-366 Mots-clés : Mentha  canadensis  Mentha  piperita  Lamiaceae  Essential  oil  composition  Menthol  Menthone  Antimicrobial  activity  Menthyl  acetate  1,8-cineole  Limonene  β-pinene  β-caryophyllene  Eugenol Index. décimale : 646 Résumé : The oil of peppermint (Mentha x piperita L.) from the USA, a dementholized cornmint oil (M. canadensis L.), and a fraction of the dementholized cornmint oil were analyzed by GC-FID and GC/MS. The main constituents of the three samples analyzed were menthone (23.4%, 20.4% and 58.3%, respectively) and menthol (40.7%, 41.2% and 12.3%, respectively). The two oils, the cornmint oil fraction and seven mint oil compounds [(-)-menthol, (-)-menthone, (+/-)-menthyl acetate, 1,8-cineole, limonene, β-pinene and β-caryophyllene] were investigated for their antimicrobial effects against two Gram-positive bacteria (Staphylococcus aureus and Enterococcus faecalis), five Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumoniae and Salmonella sp.) and the yeast Candida albicans using a modified agar dilution and agar diffusion method. Medium to high antimicrobial effects were found for both oils, the dementholized cornmint oil fraction, and the target-compounds against all Gram-positive bacteria, whereas against the Gram-negative bacteria and the yeast, one or more samples showed only weak or no activity. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Chemical composition, antimicrobial activities and olfactive evaluation of a salvia officinalis L. (Sage) essential oil from Egypt / Amr E. Edris in The journal of essential oil research, Vol. 19 N°2 (Mars-Avril 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°2 (Mars-Avril 2007) . - pp. 186-189 Titre : Chemical composition, antimicrobial activities and olfactive evaluation of a salvia officinalis L. (Sage) essential oil from Egypt Type de document : texte imprimé Auteurs : Amr E. Edris, Auteur ; Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur Année de publication : 2007 Article en page(s) : pp. 186-189 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Salvia  officinalis  Lamiaceae  Essential  oil  composition  camphor  α-thujone  β-thujone  Antimicrobial  activity  Olfactoric  evaluation Résumé : The chemical composition of a Salvia officinalis L. (sage) essential oil from Egypt has been analyzed by GC and GC/MS. Twenty-eight volatiles were identified, and camphor (25.1%), α-thujone (22.2%) and β-thujone (17.7%) were found as main compounds. These analytical results were correlated with olfactoric evaluations for quality control of this sage oil. Furthermore, the oil, some of its terpene components, a reference compound and two commercial antibiotics were screened against several microorganisms to determine the antimicrobial activity of S. officinals from Egypt. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699256#.UWqXXEqC5mM [article] Chemical composition, antimicrobial activities and olfactive evaluation of a salvia officinalis L. (Sage) essential oil from Egypt [texte imprimé] / Amr E. Edris, Auteur ; Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur . - 2007 . - pp. 186-189. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°2 (Mars-Avril 2007) . - pp. 186-189 Mots-clés : Salvia  officinalis  Lamiaceae  Essential  oil  composition  camphor  α-thujone  β-thujone  Antimicrobial  activity  Olfactoric  evaluation Résumé : The chemical composition of a Salvia officinalis L. (sage) essential oil from Egypt has been analyzed by GC and GC/MS. Twenty-eight volatiles were identified, and camphor (25.1%), α-thujone (22.2%) and β-thujone (17.7%) were found as main compounds. These analytical results were correlated with olfactoric evaluations for quality control of this sage oil. Furthermore, the oil, some of its terpene components, a reference compound and two commercial antibiotics were screened against several microorganisms to determine the antimicrobial activity of S. officinals from Egypt. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699256#.UWqXXEqC5mM

Composition and antimicrobial activity of cymbopogon giganteus (Hochst.) chiov. essential flower, leaf and stem oils from Cameroon / Leopold Jirovetz in The journal of essential oil research, Vol. 19 N°5 (Septembre/Octobre 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 485-489 Titre : Composition and antimicrobial activity of cymbopogon giganteus (Hochst.) chiov. essential flower, leaf and stem oils from Cameroon Type de document : texte imprimé Auteurs : Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Gernot Eller, Auteur Année de publication : 2007 Article en page(s) : pp. 485-489 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cymbopogon  giganteus  Poaceae  Essential  oil  compositions  Cis-p-mentha-1(7),8-dien-2-ol  Trans-p-mentha-1(7),8-dien-2-ol  Trans-p-mentha-2,8-dien-1-ol  Antimicrobial  activity Résumé : The essential oils of fresh flowers (2 samples), leaves and stems of Cymbopogon giganteus (Hochst.) Chiovenda from Cameroon were investigated by GC and GC/MS. More than 55 components have been identified in the samples 1 (flowers 1), 2 (leaves), 3 (stems) and 4 (flowers 2) with main compounds possessing the p-menthadiene skeleton as follows: cis-p-mentha-1(7),8-dien-2-ol (1: 22.8%, 2: 27.7%, 3: 29.1%, 4: 20.5%), trans-p-mentha-1(7),8-dien-2-ol (1: 24.9%, 2: 21.6%, 3: 28.1%, 4: 26.5%), trans-p-mentha-2,8-dien-1-ol (1: 17.3%, 2: 22.1%, 3: 21.4%, 4: 16.3%) and cis-p-mentha-2,8-dien-1-ol (1: 8.3%, 2: 5.4%, 3: 4.6%, 4: 9.7%). Additional components in higher concentrations, responsible for the characteristic aroma impressions of these samples are especially limonene, trans-verbenol and carvone as well as some other mono- and sesquiterpenes. Antimicrobial activities of the four oils were found against Gram-(+)- and Gram-(-)-bacteria as well as the yeast Candida albicans, and these results were discussed with the compositions of each sample. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699959#.UXEWxkqC5mM [article] Composition and antimicrobial activity of cymbopogon giganteus (Hochst.) chiov. essential flower, leaf and stem oils from Cameroon [texte imprimé] / Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Gernot Eller, Auteur . - 2007 . - pp. 485-489. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 485-489 Mots-clés : Cymbopogon  giganteus  Poaceae  Essential  oil  compositions  Cis-p-mentha-1(7),8-dien-2-ol  Trans-p-mentha-1(7),8-dien-2-ol  Trans-p-mentha-2,8-dien-1-ol  Antimicrobial  activity Résumé : The essential oils of fresh flowers (2 samples), leaves and stems of Cymbopogon giganteus (Hochst.) Chiovenda from Cameroon were investigated by GC and GC/MS. More than 55 components have been identified in the samples 1 (flowers 1), 2 (leaves), 3 (stems) and 4 (flowers 2) with main compounds possessing the p-menthadiene skeleton as follows: cis-p-mentha-1(7),8-dien-2-ol (1: 22.8%, 2: 27.7%, 3: 29.1%, 4: 20.5%), trans-p-mentha-1(7),8-dien-2-ol (1: 24.9%, 2: 21.6%, 3: 28.1%, 4: 26.5%), trans-p-mentha-2,8-dien-1-ol (1: 17.3%, 2: 22.1%, 3: 21.4%, 4: 16.3%) and cis-p-mentha-2,8-dien-1-ol (1: 8.3%, 2: 5.4%, 3: 4.6%, 4: 9.7%). Additional components in higher concentrations, responsible for the characteristic aroma impressions of these samples are especially limonene, trans-verbenol and carvone as well as some other mono- and sesquiterpenes. Antimicrobial activities of the four oils were found against Gram-(+)- and Gram-(-)-bacteria as well as the yeast Candida albicans, and these results were discussed with the compositions of each sample. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699959#.UXEWxkqC5mM

Correlation of antimicrobial activities of various essential oils and their main aromatic volatile constituents / Martina Höferl in The journal of essential oil research, Vol. 21 N° 5 (Septembre/Octobre 2009) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N° 5 (Septembre/Octobre 2009) . - pp. 459-463 Titre : Correlation of antimicrobial activities of various essential oils and their main aromatic volatile constituents Type de document : texte imprimé Auteurs : Martina Höferl, Auteur ; Gerhard Buchbauer, Auteur ; Leopold Jirovetz, Auteur Article en page(s) : pp. 459-463 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Antimicrobial  activity  Carvacrol  Carveol  m-cresol  o-cresol  p-cresol  p-cymene  Eugenol  Thymol  Essential  oils  Cinnamomum  zeylanicum  Origanum  vulgare  Pimenta  dioica  Pimenta  racemosa  Satureja  hortensis  Syzygium  aromaticum  Thymus  vulgaris  Trachyspermum  ammi  Olfactory  description Index. décimale : 646 Résumé : The pure aromatic volatiles p-cymene, carvacrol, eugenol and thymol as well as commercial essential oils of Cinnamomum zeylanicum, Origanum vulgare, Pimenta dioica, Pimenta racemosa, Satureja hortensis, Syzygium aromaticum, Thymus vulgaris and Trachyspermum ammi were investigated concerning antimicrobial activities. Therefore, these samples and, as reference substances, synthetic antibiotics and the natural antimicrobial components carveol, m-, o- and p-cresol were tested against strains of two Gram-positive and five Gram-negative bacteria and the yeast Candida albicans using agar dilution and agar diffusion methods. The analysis of the chemical composition of the essential oils by means of GC and GC/MS focusing on aromatic volatiles produced the following results: C. zeylanicum: eugenol (74.9%); O. vulgare: carvacrol (66.1%) and p-cymene (9.2%); P. dioica: eugenol (76.0%); P. racemosa: eugenol (45.6%); S. hortensis: carvacrol (41.5%), p-cymene (10.7%) and thymol (8.7%); S. aromaticum: eugenol (76.8%); T. vulgaris: thymol (43.4%), p-cymene (23.5%) and carvacrol (4.1%); T. ammi: thymol (43.7%) and p-cymene (17.7%). All investigated aromatic volatiles and essential oils exhibited strong effects against the yeast Candida albicans and medium to strong antimicrobial activity against the Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis and the Gram-negative bacteria Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, and Salmonella sp., whereas weaker effects were observed against Pseudomonas aeruginosa. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Correlation of antimicrobial activities of various essential oils and their main aromatic volatile constituents [texte imprimé] / Martina Höferl, Auteur ; Gerhard Buchbauer, Auteur ; Leopold Jirovetz, Auteur . - pp. 459-463. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 5 (Septembre/Octobre 2009) . - pp. 459-463 Mots-clés : Antimicrobial  activity  Carvacrol  Carveol  m-cresol  o-cresol  p-cresol  p-cymene  Eugenol  Thymol  Essential  oils  Cinnamomum  zeylanicum  Origanum  vulgare  Pimenta  dioica  Pimenta  racemosa  Satureja  hortensis  Syzygium  aromaticum  Thymus  vulgaris  Trachyspermum  ammi  Olfactory  description Index. décimale : 646 Résumé : The pure aromatic volatiles p-cymene, carvacrol, eugenol and thymol as well as commercial essential oils of Cinnamomum zeylanicum, Origanum vulgare, Pimenta dioica, Pimenta racemosa, Satureja hortensis, Syzygium aromaticum, Thymus vulgaris and Trachyspermum ammi were investigated concerning antimicrobial activities. Therefore, these samples and, as reference substances, synthetic antibiotics and the natural antimicrobial components carveol, m-, o- and p-cresol were tested against strains of two Gram-positive and five Gram-negative bacteria and the yeast Candida albicans using agar dilution and agar diffusion methods. The analysis of the chemical composition of the essential oils by means of GC and GC/MS focusing on aromatic volatiles produced the following results: C. zeylanicum: eugenol (74.9%); O. vulgare: carvacrol (66.1%) and p-cymene (9.2%); P. dioica: eugenol (76.0%); P. racemosa: eugenol (45.6%); S. hortensis: carvacrol (41.5%), p-cymene (10.7%) and thymol (8.7%); S. aromaticum: eugenol (76.8%); T. vulgaris: thymol (43.4%), p-cymene (23.5%) and carvacrol (4.1%); T. ammi: thymol (43.7%) and p-cymene (17.7%). All investigated aromatic volatiles and essential oils exhibited strong effects against the yeast Candida albicans and medium to strong antimicrobial activity against the Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis and the Gram-negative bacteria Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, and Salmonella sp., whereas weaker effects were observed against Pseudomonas aeruginosa. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Essential oil analysis of spilanthes acmella murr. fresh plants from southern India / Leopold Jirovetz in The journal of essential oil research, Vol. 17 N° 4 (Juillet-Août 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 429-431 Titre : Essential oil analysis of spilanthes acmella murr. fresh plants from southern India Type de document : texte imprimé Auteurs : Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Andrea Wobus, Auteur Année de publication : 2006 Article en page(s) : pp. 429-431 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Spilanthes  acmella  Asteraceae  Essential  oil  composition  (E)-2-hexenol  2-tridecanone  Germacrene  D  Hexanol  β-caryophyllene Résumé : The essential oil of the fresh plant of Spilanthes acmella Murr. from southern India was investigated by GC and GC/MS. More than 45 components have been identifi ed including (E)-2-hexenol (25.7%), 2-tridecanone (13.1%), germacrene D (11.1%), hexanol (11.0%), β-caryophyllene (10.8%) and (Z)-3-hexenol (5.1%) as signifi cantly dominating compounds. Additional components, responsible for the characteristic aroma impressions of this sample are especially C6-C9 derivatives, mono- and sesquiterpenes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698952#.Uck66GF2_n5 [article] Essential oil analysis of spilanthes acmella murr. fresh plants from southern India [texte imprimé] / Leopold Jirovetz, Auteur ; Gerhard Buchbauer, Auteur ; Andrea Wobus, Auteur . - 2006 . - pp. 429-431. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 429-431 Mots-clés : Spilanthes  acmella  Asteraceae  Essential  oil  composition  (E)-2-hexenol  2-tridecanone  Germacrene  D  Hexanol  β-caryophyllene Résumé : The essential oil of the fresh plant of Spilanthes acmella Murr. from southern India was investigated by GC and GC/MS. More than 45 components have been identifi ed including (E)-2-hexenol (25.7%), 2-tridecanone (13.1%), germacrene D (11.1%), hexanol (11.0%), β-caryophyllene (10.8%) and (Z)-3-hexenol (5.1%) as signifi cantly dominating compounds. Additional components, responsible for the characteristic aroma impressions of this sample are especially C6-C9 derivatives, mono- and sesquiterpenes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698952#.Uck66GF2_n5

Purity, antimicrobial activities and olfactoric evaluations of geraniol/nerol and various of their derivatives / Leopold Jirovetz in The journal of essential oil research, Vol. 19 N°3 (Mai/Juin 2007) 

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Purity, antimicrobial activities and olfactory evaluations of 2-phenylethanol and some derivatives / Leopold Jirovetz in The journal of essential oil research, Vol. 20 N°1 (Janvier/Fevrier 2008) 

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