Documents disponibles écrits par cet auteur

Alkanes and terpenes in wood and leaves of pinus jeffreyi and P. sabiniana / Robert P. Adams in The journal of essential oil research, Vol. 24 N° 5 (Octobre 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 5 (Octobre 2012) . - pp. 435-440 Titre : Alkanes and terpenes in wood and leaves of pinus jeffreyi and P. sabiniana Type de document : texte imprimé Auteurs : Robert P. Adams, Auteur ; Jessica W. Wright, Auteur Année de publication : 2013 Article en page(s) : pp. 435-440 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pinus  jeffreyi  Pinus  sabiniana  Wood  oils  Leaf  oils  Heptane  Alkanes  Terpenes  Diterpene  acids Résumé : The wood oils of Pinus jeffreyi and P. sabiniana contain considerable amounts of heptane (76.6%, 92%), on a monoterpene basis. However, when entire wood extractables is considered, the amounts drop considerably (3.4%, 36.8%) with the major portion of the wood oils being diterpene acids. The leaf oil of P. jeffreyi is dominated by α-pinene (20.9%) and, a diterpene, thunbergol (9.2%) with moderate amounts of β-pinene, δ-3-carene, limonene, β-phellandrene, (Z)-β-ocimene, (E)-caryophyllene, δ-cadinene and cembrene. The leaf oil of P. sabiniana is dominated by α-pinene (39.1%) with moderate amounts of β-pinene, myrcene, limonene, β-phellandrene, (Z)-β-ocimene, methyl chavicol, decanal and thunbergol. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.703512 [article] Alkanes and terpenes in wood and leaves of pinus jeffreyi and P. sabiniana [texte imprimé] / Robert P. Adams, Auteur ; Jessica W. Wright, Auteur . - 2013 . - pp. 435-440. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 5 (Octobre 2012) . - pp. 435-440 Mots-clés : Pinus  jeffreyi  Pinus  sabiniana  Wood  oils  Leaf  oils  Heptane  Alkanes  Terpenes  Diterpene  acids Résumé : The wood oils of Pinus jeffreyi and P. sabiniana contain considerable amounts of heptane (76.6%, 92%), on a monoterpene basis. However, when entire wood extractables is considered, the amounts drop considerably (3.4%, 36.8%) with the major portion of the wood oils being diterpene acids. The leaf oil of P. jeffreyi is dominated by α-pinene (20.9%) and, a diterpene, thunbergol (9.2%) with moderate amounts of β-pinene, δ-3-carene, limonene, β-phellandrene, (Z)-β-ocimene, (E)-caryophyllene, δ-cadinene and cembrene. The leaf oil of P. sabiniana is dominated by α-pinene (39.1%) with moderate amounts of β-pinene, myrcene, limonene, β-phellandrene, (Z)-β-ocimene, methyl chavicol, decanal and thunbergol. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.703512

Comparative study of the essential oil of rhodiola rosea L. from Mongolia / Sanduin Shatar in The journal of essential oil research, Vol. 19 N°3 (Mai/Juin 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°3 (Mai/Juin 2007) . - pp. 215-217 Titre : Comparative study of the essential oil of rhodiola rosea L. from Mongolia Type de document : texte imprimé Auteurs : Sanduin Shatar, Auteur ; Robert P. Adams, Auteur ; Wilfried Koenig, Auteur Année de publication : 2007 Article en page(s) : pp. 215-217 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Rodiola  rosea  Crassulaceae  Essential  oil  composition  Geraniol  Myrtenol  Octanol  Trans-pinocarveol Résumé : The essential oil of the rhizomes of Mongolian Rhodiola rosea L. was investigated by GC and GC/MS. Thirty-six constituents were identified in the oil. The main components in the oil were geraniol (32.3%), myrtenol (15.7%), octanol (13.7%), trans-pinocarveol (11.6%), trans-myrtanol (3.2%), isopinocamphone (2.8%) and piperitone (1.2%). Comparisons are made with Rhodiola rosea rhizome oil from Finland and Norway and oils from other Rhodiola species (R. crenulata, Tibet; R. fastigiata, Tibet; R. yunnanesis, China). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699264#.UWqljEqC5mM [article] Comparative study of the essential oil of rhodiola rosea L. from Mongolia [texte imprimé] / Sanduin Shatar, Auteur ; Robert P. Adams, Auteur ; Wilfried Koenig, Auteur . - 2007 . - pp. 215-217. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°3 (Mai/Juin 2007) . - pp. 215-217 Mots-clés : Rodiola  rosea  Crassulaceae  Essential  oil  composition  Geraniol  Myrtenol  Octanol  Trans-pinocarveol Résumé : The essential oil of the rhizomes of Mongolian Rhodiola rosea L. was investigated by GC and GC/MS. Thirty-six constituents were identified in the oil. The main components in the oil were geraniol (32.3%), myrtenol (15.7%), octanol (13.7%), trans-pinocarveol (11.6%), trans-myrtanol (3.2%), isopinocamphone (2.8%) and piperitone (1.2%). Comparisons are made with Rhodiola rosea rhizome oil from Finland and Norway and oils from other Rhodiola species (R. crenulata, Tibet; R. fastigiata, Tibet; R. yunnanesis, China). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699264#.UWqljEqC5mM

Geographic variation in the leaf essential oils of juniperus sabina L. and J. sabina var. arenaria (E.H. Wilson) farjon / Robert P. Adams 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. 497-502 Titre : Geographic variation in the leaf essential oils of juniperus sabina L. and J. sabina var. arenaria (E.H. Wilson) farjon Type de document : texte imprimé Auteurs : Robert P. Adams, Auteur ; Sanko Nguyen, Auteur ; Jianquan Liu, Auteur Année de publication : 2006 Article en page(s) : pp. 497-502 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Juniperus  sabina,  var.  arenaria  Juniperus  chinensis  Juniperus  davurica  Cupressaceae  Essential  oil  composition  α-pinene  Sabinene  Limonene  Trans-sabinyl  acetate  Cedrol  Geographic  variation  Systematics Résumé : The composition of the leaf oils from seven populations of J. sabina L., one population of Juniperus sabina var. arenaria (E. H. Wilson) Farjon were examined for their geographic variation. In addition, the leaf oils of J. chinensis L. and J. davurica Pall. were compared to J. sabina. Juniperus sabina var. arenaria, the sand loving juniper, oil was found to be very similar to that of J. davurica, Mongolia, and J. sabina, on sand dunes in Mongolia. This suggests that J. sabina var. arenaria might be conspecific with J. davurica. Farjon's move (2001) of J. sabina var. arenaria out of J. chinensis is supported. Considerable differentiation was found in populations of J. sabina from the Iberian peninsula. Cedrol, citronellol, safrole, trans-sabinyl acetate, terpinen-4-ol and β-thujone were found to be polymorphic in several populations. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699152#.UXchKUqC5mM [article] Geographic variation in the leaf essential oils of juniperus sabina L. and J. sabina var. arenaria (E.H. Wilson) farjon [texte imprimé] / Robert P. Adams, Auteur ; Sanko Nguyen, Auteur ; Jianquan Liu, Auteur . - 2006 . - pp. 497-502. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 5 (Septembre-Octobre 2006) . - pp. 497-502 Mots-clés : Juniperus  sabina,  var.  arenaria  Juniperus  chinensis  Juniperus  davurica  Cupressaceae  Essential  oil  composition  α-pinene  Sabinene  Limonene  Trans-sabinyl  acetate  Cedrol  Geographic  variation  Systematics Résumé : The composition of the leaf oils from seven populations of J. sabina L., one population of Juniperus sabina var. arenaria (E. H. Wilson) Farjon were examined for their geographic variation. In addition, the leaf oils of J. chinensis L. and J. davurica Pall. were compared to J. sabina. Juniperus sabina var. arenaria, the sand loving juniper, oil was found to be very similar to that of J. davurica, Mongolia, and J. sabina, on sand dunes in Mongolia. This suggests that J. sabina var. arenaria might be conspecific with J. davurica. Farjon's move (2001) of J. sabina var. arenaria out of J. chinensis is supported. Considerable differentiation was found in populations of J. sabina from the Iberian peninsula. Cedrol, citronellol, safrole, trans-sabinyl acetate, terpinen-4-ol and β-thujone were found to be polymorphic in several populations. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699152#.UXchKUqC5mM

New natural products isolated from one-seeded juniperus of the southwestern United States / Robert P. Adams 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. 146-152 Titre : New natural products isolated from one-seeded juniperus of the southwestern United States : Isolation and occurrence of 2-ethenyl-3-methyl phenol and its derivatives Type de document : texte imprimé Auteurs : Robert P. Adams, Auteur ; Philip S. Beauchamp, Auteur ; Vasu Dev, Auteur Année de publication : 2007 Article en page(s) : pp. 146-152 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Juniperus  pinchotii  Juniperus  coahuilensis  Var.  coahuilensis  Juniperus  coahuilensis  var.  arizonica  Juniperus  angosturana  Juniperus  monosperma  Cupessaceae  Essential  oil  composition  2-ethenyl-3-methyl  phenol  (coahuilensol)  2-ethenyl-3-methyl  anisole  (coahuilensol,  methyl  ether)  2-(1′-acetoxyethyl)-3-methyl  anisole  (pinchotene  acetate) Résumé : Re-examination of the leaf essential oils of the one-seeded, serrate leaf junipers of the Southwestern United States and northern Mexico, by GC, GC/MS and NMR, has yielded 2-ethenyl-3-methyl phenol (coahuilensol), 2-ethenyl-3-methyl anisole (coahuilensol, methyl ether), and 2-(1′-acetoxyethyl)-3-methyl anisole (pinchotene acetate) as new natural products. A survey of Juniperus oils revealed that these compounds were found in: three serrate leaf junipers (J. angosturana, two varieties of J. coahuilensis, and J. pinchotii). Coahuilensol was also found in the oils of two smooth leaf junipers of the western hemisphere (J. virginiana var. virginiana and J. v. var. silicicola); three multiple seeded, smooth leaf junipers of the eastern hemisphere (J. semiglobosa, J. semiglobosa var. talassica, and J. thurifera). The phenolic compounds were not found in section Juniperus, section Caryocedrus or in the one seeded, smooth leaf junipers of the eastern hemisphere. Coahuilensol has been previously reported as 2-(2-propenyl)-phenol (tentative). The leaf oils of J. angosturana J. coahuilensis, J. coahuilensis var. coahuilensis, J. monosperma and J. pinchotii were re-examined based on fresh oil collections and the compositions are reported. NMR data and mass spectra of the three 3-methyl phenols are presented to aid in future identification. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699247 [article] New natural products isolated from one-seeded juniperus of the southwestern United States : Isolation and occurrence of 2-ethenyl-3-methyl phenol and its derivatives [texte imprimé] / Robert P. Adams, Auteur ; Philip S. Beauchamp, Auteur ; Vasu Dev, Auteur . - 2007 . - pp. 146-152. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°2 (Mars-Avril 2007) . - pp. 146-152 Mots-clés : Juniperus  pinchotii  Juniperus  coahuilensis  Var.  coahuilensis  Juniperus  coahuilensis  var.  arizonica  Juniperus  angosturana  Juniperus  monosperma  Cupessaceae  Essential  oil  composition  2-ethenyl-3-methyl  phenol  (coahuilensol)  2-ethenyl-3-methyl  anisole  (coahuilensol,  methyl  ether)  2-(1′-acetoxyethyl)-3-methyl  anisole  (pinchotene  acetate) Résumé : Re-examination of the leaf essential oils of the one-seeded, serrate leaf junipers of the Southwestern United States and northern Mexico, by GC, GC/MS and NMR, has yielded 2-ethenyl-3-methyl phenol (coahuilensol), 2-ethenyl-3-methyl anisole (coahuilensol, methyl ether), and 2-(1′-acetoxyethyl)-3-methyl anisole (pinchotene acetate) as new natural products. A survey of Juniperus oils revealed that these compounds were found in: three serrate leaf junipers (J. angosturana, two varieties of J. coahuilensis, and J. pinchotii). Coahuilensol was also found in the oils of two smooth leaf junipers of the western hemisphere (J. virginiana var. virginiana and J. v. var. silicicola); three multiple seeded, smooth leaf junipers of the eastern hemisphere (J. semiglobosa, J. semiglobosa var. talassica, and J. thurifera). The phenolic compounds were not found in section Juniperus, section Caryocedrus or in the one seeded, smooth leaf junipers of the eastern hemisphere. Coahuilensol has been previously reported as 2-(2-propenyl)-phenol (tentative). The leaf oils of J. angosturana J. coahuilensis, J. coahuilensis var. coahuilensis, J. monosperma and J. pinchotii were re-examined based on fresh oil collections and the compositions are reported. NMR data and mass spectra of the three 3-methyl phenols are presented to aid in future identification. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699247

The botanical source of chinese cedarwood oil / Robert P. Adams in The journal of essential oil research, Vol. 20 n°3 (Mai/Juin 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 235-242 Titre : The botanical source of chinese cedarwood oil : Cupressus funebris or cupressaceae species? Type de document : texte imprimé Auteurs : Robert P. Adams, Auteur ; Shufen Li, Auteur Année de publication : 2008 Article en page(s) : pp. 235-242 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cupressus  funebris  Juniperus  chinensis  Cupressaceae  Chinese  cedarwood  oils  Essential  oil  composition  α-cedrene  β-cedrene  Cedrol  Cis-thujopsene  Cuparene  Origin  Variation Résumé : Cupressus funebris is generally regarded as the botanical source of Chinese cedarwood oil. However, due the limited amount of mature forest trees of C. funebris in China, other species in the Cupressaceae that have wood oils high in α-cedrene, β-cedrene, thujopsene and cedrol might be utilized for cedarwood oil production. Wood samples of putative C. funebris were extracted and the extracts were analyzed and compared with several lots of Chinese cedarwood oil. Wood oils were also extracted from Juniperus chinensis and J. c. cv. torrulosa and analyzed. Considerable variation was found among the wood oils of putative C. funebris. The various lots of commercial Chinese cedarwood oils were very variable: α-cedrene (3.6–44.2%), β-cedrene (3.5–11.5%), cis-thujopsene (1.9–37.4%), cedrol (1.7–23.4%). The presence of β-biotol and β-biotone in several Chinese cedarwood oils seems to indicate that wood of Platycladus orientalis (Biota orientalis) was utilized in their production. It appears that Chinese cedarwood oil is derived from a mixture of woods from several Cupressaceae species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700001 [article] The botanical source of chinese cedarwood oil : Cupressus funebris or cupressaceae species? [texte imprimé] / Robert P. Adams, Auteur ; Shufen Li, Auteur . - 2008 . - pp. 235-242. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 235-242 Mots-clés : Cupressus  funebris  Juniperus  chinensis  Cupressaceae  Chinese  cedarwood  oils  Essential  oil  composition  α-cedrene  β-cedrene  Cedrol  Cis-thujopsene  Cuparene  Origin  Variation Résumé : Cupressus funebris is generally regarded as the botanical source of Chinese cedarwood oil. However, due the limited amount of mature forest trees of C. funebris in China, other species in the Cupressaceae that have wood oils high in α-cedrene, β-cedrene, thujopsene and cedrol might be utilized for cedarwood oil production. Wood samples of putative C. funebris were extracted and the extracts were analyzed and compared with several lots of Chinese cedarwood oil. Wood oils were also extracted from Juniperus chinensis and J. c. cv. torrulosa and analyzed. Considerable variation was found among the wood oils of putative C. funebris. The various lots of commercial Chinese cedarwood oils were very variable: α-cedrene (3.6–44.2%), β-cedrene (3.5–11.5%), cis-thujopsene (1.9–37.4%), cedrol (1.7–23.4%). The presence of β-biotol and β-biotone in several Chinese cedarwood oils seems to indicate that wood of Platycladus orientalis (Biota orientalis) was utilized in their production. It appears that Chinese cedarwood oil is derived from a mixture of woods from several Cupressaceae species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700001

The leaf essential oils of juniperus communis L. varieties in north america and the NMR and MS data for isoabienol / Robert P. Adams in The journal of essential oil research, Vol. 22 N° 1 (Janvier/Fevrier 2010) 

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The leaf essential oils of the genus calocedrus / Robert P. Adams in The journal of essential oil research, Vol. 18 N° 6 (Novembre-Décembre 2006) 

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