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Chemical composition, and antioxidant and antimicrobial activities of alpinia nutans rosc. / Sushil Joshi 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. 85-90 Titre : Chemical composition, and antioxidant and antimicrobial activities of alpinia nutans rosc. Type de document : texte imprimé Auteurs : Sushil Joshi, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur Article en page(s) : pp. 85-90 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Alpinia  nutans  Zingiberaceae  Essential  oil  composition  Sabinene  1,8-cineole  Terpinen-4-ol  γ-terpinene  Antioxidant  activity  Antimicrobial  activity Index. décimale : 646 Résumé : The essential oils of the aerial parts and flowers of Alpinia nutans Rosc. were analyzed by GC and GC/MS. Oil from aerial parts was rich in monoterpenoids (85.7%) with sabinene (27.8%), 1,8-cineole (17.4%), terpinen-4-ol (14.9%), p-cymene (5.2%), γ-terpinene (5.1%), cis-sabinene hydrate (1.3%) and linalool (3.3%) as the major components identified, and with β-caryophyllene (3.9%) and caryophyllene oxide (1.3%) as sesquiterpenoids. Terpinen-4-ol (25.1%), γ-terpinene (19.4%), sabinene (14.2%), 1,8-cineole (10.8%), linalool (1.6%) and caryophyllene oxide (1.0%) were the major components characterized in the flower oil. The oils were evaluated for DPPH radical scavenging ability, chelation of Fe+2, and reducing power activities. Further, these oils were also examined for their antimicrobial activities against Pasteurella multocida, Escherichia coli, Salmonella enterica, Shigella flexneri and Staphylococcus aureus. The aerial parts oil was found to be more active than the flower oil in all the cases. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47 [article] Chemical composition, and antioxidant and antimicrobial activities of alpinia nutans rosc. [texte imprimé] / Sushil Joshi, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur . - pp. 85-90. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 85-90 Mots-clés : Alpinia  nutans  Zingiberaceae  Essential  oil  composition  Sabinene  1,8-cineole  Terpinen-4-ol  γ-terpinene  Antioxidant  activity  Antimicrobial  activity Index. décimale : 646 Résumé : The essential oils of the aerial parts and flowers of Alpinia nutans Rosc. were analyzed by GC and GC/MS. Oil from aerial parts was rich in monoterpenoids (85.7%) with sabinene (27.8%), 1,8-cineole (17.4%), terpinen-4-ol (14.9%), p-cymene (5.2%), γ-terpinene (5.1%), cis-sabinene hydrate (1.3%) and linalool (3.3%) as the major components identified, and with β-caryophyllene (3.9%) and caryophyllene oxide (1.3%) as sesquiterpenoids. Terpinen-4-ol (25.1%), γ-terpinene (19.4%), sabinene (14.2%), 1,8-cineole (10.8%), linalool (1.6%) and caryophyllene oxide (1.0%) were the major components characterized in the flower oil. The oils were evaluated for DPPH radical scavenging ability, chelation of Fe+2, and reducing power activities. Further, these oils were also examined for their antimicrobial activities against Pasteurella multocida, Escherichia coli, Salmonella enterica, Shigella flexneri and Staphylococcus aureus. The aerial parts oil was found to be more active than the flower oil in all the cases. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47

Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw / Manjul Gondwal in The journal of essential oil research, Vol. 24 N° 1 (Fevrier 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90 Titre : Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw Type de document : texte imprimé Auteurs : Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur Année de publication : 2012 Article en page(s) : pp. 83-90 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Skimmia  anquetilia  Rutaceae  Essential  oils  Antioxidant  activity  Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034 [article] Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw [texte imprimé] / Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur . - 2012 . - pp. 83-90. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90 Mots-clés : Skimmia  anquetilia  Rutaceae  Essential  oils  Antioxidant  activity  Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034