Chemical composition, leaf trichome types and biological activities of the essential oils of four related salvia species indigenous to Southern Africa / Guy P. P. Kamatou in The journal of essential oil research, Vol. 18 N° Spécial (Juillet 2006)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 72-79 Titre : Chemical composition, leaf trichome types and biological activities of the essential oils of four related salvia species indigenous to Southern Africa Type de document : texte imprimé Auteurs : Guy P. P. Kamatou, Auteur ; Robyn L. Van Zyl, Auteur ; Sandy F. Van Vuuren, Auteur Année de publication : 2013 Article en page(s) : pp. 72-79 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Salvia africana-caerulea africana-lutea chamelaeagnea lanceolata Lamiaceae Trichomes Biological activities Essential oil α  -pinene Myrcene 1,8-cineole Spathulenol Caryophyllene-oxide Résumé : The essential oils from fresh aerial parts of four Salvia species indigenous to southern Africa were obtained by hydrodistillation and analyzed by GC and GC/MS. Quantitative rather than qualitative differences in oil composition were observed. Forty-three compounds in each species accounting for 78% (S. africana-caerulea), 78% (S. africana-lutea), 96% (S. chamelaeagnea) and 81% (S. lanceolata) of the total composition were identified. Salvia africana-caerulea and S. lanceolata were dominated by oxygen-containing sesquiterpenes (59% and 48%, respectively). Oxygen-containing monoterpenes dominated in S. chanuslaeagnea (43%), while monoterpene hydrocarbons (36%) were abundant in S. africana-lutea. Scanning electron and light microscopy of the indumentum of the leaves revealed the presence of glandular and non-glandular trichomes. Non-glandular point-shaped trichomes composed of two or three cells are common in all four species and two types of glandular trichomes were noted: peltate trichomes, with up to 16 head cells and a capitate type varying in the number of cells comprising the head and stalk. The oils were evaluated against two Gram-positive and two Gram-negative bacterial strains using the microdilution method and the MIC values ranged from 0.8 to 32 mg/mL. The oils exhibited antiplasmodial (5 ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019087 [article] Chemical composition, leaf trichome types and biological activities of the essential oils of four related salvia species indigenous to Southern Africa [texte imprimé] / Guy P. P. Kamatou, Auteur ; Robyn L. Van Zyl, Auteur ; Sandy F. Van Vuuren, Auteur . - 2013 . - pp. 72-79. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 72-79 Mots-clés : Salvia africana-caerulea africana-lutea chamelaeagnea lanceolata Lamiaceae Trichomes Biological activities Essential oil α  -pinene Myrcene 1,8-cineole Spathulenol Caryophyllene-oxide Résumé : The essential oils from fresh aerial parts of four Salvia species indigenous to southern Africa were obtained by hydrodistillation and analyzed by GC and GC/MS. Quantitative rather than qualitative differences in oil composition were observed. Forty-three compounds in each species accounting for 78% (S. africana-caerulea), 78% (S. africana-lutea), 96% (S. chamelaeagnea) and 81% (S. lanceolata) of the total composition were identified. Salvia africana-caerulea and S. lanceolata were dominated by oxygen-containing sesquiterpenes (59% and 48%, respectively). Oxygen-containing monoterpenes dominated in S. chanuslaeagnea (43%), while monoterpene hydrocarbons (36%) were abundant in S. africana-lutea. Scanning electron and light microscopy of the indumentum of the leaves revealed the presence of glandular and non-glandular trichomes. Non-glandular point-shaped trichomes composed of two or three cells are common in all four species and two types of glandular trichomes were noted: peltate trichomes, with up to 16 head cells and a capitate type varying in the number of cells comprising the head and stalk. The oils were evaluated against two Gram-positive and two Gram-negative bacterial strains using the microdilution method and the MIC values ranged from 0.8 to 32 mg/mL. The oils exhibited antiplasmodial (5 ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019087

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The biological activities of 20 nature identical essential oil constituents / Robyn L. Van Zyl in The journal of essential oil research, Vol. 18 N° Spécial (Juillet 2006)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 129-133 Titre : The biological activities of 20 nature identical essential oil constituents Type de document : texte imprimé Auteurs : Robyn L. Van Zyl, Auteur ; Sammy T. Seatlholo, Auteur ; Sandy F. Van Vuuren, Auteur Année de publication : 2013 Article en page(s) : pp. 129-133 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Nature identical essential oil constituent (-)-α  -bisabolol Geraniol (±)-linalool (E- & Z-)-(±)-nerolidol (-)-citronellal Trans-geranyl acetate Linalyl (±)-α  +β  -thujone (+)-carvone (-)-fenchone (-)-menthone (-)-pulegone Carvacrol Eugenol (+)-α  -pinene (+)-β  -pinene γ  -terpinene p-cymene 1,8-cineole (+)-limonene Antimicrobial activity Antimalarial Antioxidant Toxicity Résumé : Twenty nature identical essential oil constituents from seven structural groups were tested for antimalarial, antimicrobial, antioxidant and toxicity properties. The compounds displayed antimalarial activity (IC50 values ranging from 0.9 to 1528.8 μM) with varying toxicity (IC50 values ranging from 5.5 to 1358.4 pM). The data indicates that (-)-pulegone, (E- & Z-)-(±)-nerolidol, linalyl acetate and (+)-α-pinene have the most potent antimalaial activity. Carvacrol (MIC values ranging from ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019096 [article] The biological activities of 20 nature identical essential oil constituents [texte imprimé] / Robyn L. Van Zyl, Auteur ; Sammy T. Seatlholo, Auteur ; Sandy F. Van Vuuren, Auteur . - 2013 . - pp. 129-133. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 129-133 Mots-clés : Nature identical essential oil constituent (-)-α  -bisabolol Geraniol (±)-linalool (E- & Z-)-(±)-nerolidol (-)-citronellal Trans-geranyl acetate Linalyl (±)-α  +β  -thujone (+)-carvone (-)-fenchone (-)-menthone (-)-pulegone Carvacrol Eugenol (+)-α  -pinene (+)-β  -pinene γ  -terpinene p-cymene 1,8-cineole (+)-limonene Antimicrobial activity Antimalarial Antioxidant Toxicity Résumé : Twenty nature identical essential oil constituents from seven structural groups were tested for antimalarial, antimicrobial, antioxidant and toxicity properties. The compounds displayed antimalarial activity (IC50 values ranging from 0.9 to 1528.8 μM) with varying toxicity (IC50 values ranging from 5.5 to 1358.4 pM). The data indicates that (-)-pulegone, (E- & Z-)-(±)-nerolidol, linalyl acetate and (+)-α-pinene have the most potent antimalaial activity. Carvacrol (MIC values ranging from ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019096

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