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Composition and antimicrobial activity of the leaf essential oil of machilus obovatifolia from Taiwan / Chen-Lung Ho 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. 471-475 Titre : Composition and antimicrobial activity of the leaf essential oil of machilus obovatifolia from Taiwan Type de document : texte imprimé Auteurs : Chen-Lung Ho, Auteur ; Kuang-Ping Hsu, Auteur ; Eugene I-Chen Wang, Auteur Article en page(s) : pp. 471-475 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Machilus  obovatifolia  Lauraceae  Essential  oil  composition  β-caryophyllene  Headspace  volatiles  Antimicrobial  activity Index. décimale : 646 Résumé : The leaf essential oils of Machilus obovatifolia were isolated and analyzed using either the hydrodistillation or headspace-GC methods to determine their compositions and yields. Antimicrobial activities of the leaf oils obtained were also evaluated. Ninety-three compounds were identified in the hydrodistilled leaf oil, and 74 compounds were identified by the headspace-GC and GC/MS method, respectively. The main components of the oils were β-caryophyllene (10.5%), β-phellandrene (7.8%), τ-muurolol (5.3%), α-phellandrene (5.1%) and δ-cadinene (5.0%). The leaf oils exhibited excellent antimicrobial activities. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Composition and antimicrobial activity of the leaf essential oil of machilus obovatifolia from Taiwan [texte imprimé] / Chen-Lung Ho, Auteur ; Kuang-Ping Hsu, Auteur ; Eugene I-Chen Wang, Auteur . - pp. 471-475. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 5 (Septembre/Octobre 2009) . - pp. 471-475 Mots-clés : Machilus  obovatifolia  Lauraceae  Essential  oil  composition  β-caryophyllene  Headspace  volatiles  Antimicrobial  activity Index. décimale : 646 Résumé : The leaf essential oils of Machilus obovatifolia were isolated and analyzed using either the hydrodistillation or headspace-GC methods to determine their compositions and yields. Antimicrobial activities of the leaf oils obtained were also evaluated. Ninety-three compounds were identified in the hydrodistilled leaf oil, and 74 compounds were identified by the headspace-GC and GC/MS method, respectively. The main components of the oils were β-caryophyllene (10.5%), β-phellandrene (7.8%), τ-muurolol (5.3%), α-phellandrene (5.1%) and δ-cadinene (5.0%). The leaf oils exhibited excellent antimicrobial activities. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Composition and bioactivities of the leaf essential oils of cinnamomum subavenium miq. from Taiwan / Chen-Lung Ho 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. 328-334 Titre : Composition and bioactivities of the leaf essential oils of cinnamomum subavenium miq. from Taiwan Type de document : texte imprimé Auteurs : Chen-Lung Ho, Auteur ; Eugene I-Chen Wang, Auteur ; Xiao-Ting Wei, Auteur Année de publication : 2008 Article en page(s) : pp. 328-334 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cinnamomum  subavenium  Lauraceae  Essential  oil  composition  Methyl  eugenol  p-cymene  1,8-cineole  Linalool  Headspace  volatiles  Antioxidant  activity  Antimicrobial  activity Résumé : Leaves of Cinnamomum subavenium Miq. were collected from two sites in Taiwan. Leaf essential oils of C. sub-avenium were isolated using hydrodistillation and headspace-GC methods to determine their composition and yield. Antioxidant and antimicrobial activities of various oils obtained were also evaluated. Forty-four and 88 compounds were identified in the leaf oils obtained. Whereas 26 and 65 compounds were identified by headspace-GC method, respectively. The main headspace components were comparable to those of the oil. The main components of one of the oils were methyl eugenol (75.9%), linalool (7.3%), and eugenol (6.6%); while those from the other oil were p-cymene (21.6%), 1,8-cineole (16.5%), and linalool (11.9%). Both leaf oils had excellent antioxidant and antimicrobial activities. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700024 [article] Composition and bioactivities of the leaf essential oils of cinnamomum subavenium miq. from Taiwan [texte imprimé] / Chen-Lung Ho, Auteur ; Eugene I-Chen Wang, Auteur ; Xiao-Ting Wei, Auteur . - 2008 . - pp. 328-334. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 328-334 Mots-clés : Cinnamomum  subavenium  Lauraceae  Essential  oil  composition  Methyl  eugenol  p-cymene  1,8-cineole  Linalool  Headspace  volatiles  Antioxidant  activity  Antimicrobial  activity Résumé : Leaves of Cinnamomum subavenium Miq. were collected from two sites in Taiwan. Leaf essential oils of C. sub-avenium were isolated using hydrodistillation and headspace-GC methods to determine their composition and yield. Antioxidant and antimicrobial activities of various oils obtained were also evaluated. Forty-four and 88 compounds were identified in the leaf oils obtained. Whereas 26 and 65 compounds were identified by headspace-GC method, respectively. The main headspace components were comparable to those of the oil. The main components of one of the oils were methyl eugenol (75.9%), linalool (7.3%), and eugenol (6.6%); while those from the other oil were p-cymene (21.6%), 1,8-cineole (16.5%), and linalool (11.9%). Both leaf oils had excellent antioxidant and antimicrobial activities. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700024

Composition of the leaf oils of prunus phaeosticta var. phaeosticta from Taiwan / Chen-Lung Ho 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. 345-347 Titre : Composition of the leaf oils of prunus phaeosticta var. phaeosticta from Taiwan Type de document : texte imprimé Auteurs : Chen-Lung Ho, Auteur ; Eugene I-Chen Wang, Auteur ; Yu-Chang Su, Auteur Article en page(s) : pp. 345-347 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Prunus  phaeosticta  var.  phaeosticta  Rosaceae  Essential  oil  composition  Benzaldehyde  Headspace  volatiles Index. décimale : 646 Résumé : The leaf essential oils of Prunus phaeosticta var. phaeosticta were isolated and analyzed using hydrodistillation and headspace-GC methods to determine their composition and yield. Seventy-six compounds were identified in the hydrodistilled leaf oil, and 58 compounds were identified by the headspace, respectively, using GC and GC/MS. The main components of the oils were benzaldehyde (73.3%), 1,8-cineole (5.4%), and α-terpinyl acetate (4.4%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Composition of the leaf oils of prunus phaeosticta var. phaeosticta from Taiwan [texte imprimé] / Chen-Lung Ho, Auteur ; Eugene I-Chen Wang, Auteur ; Yu-Chang Su, Auteur . - pp. 345-347. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 4 (Juillet/Août 2009) . - pp. 345-347 Mots-clés : Prunus  phaeosticta  var.  phaeosticta  Rosaceae  Essential  oil  composition  Benzaldehyde  Headspace  volatiles Index. décimale : 646 Résumé : The leaf essential oils of Prunus phaeosticta var. phaeosticta were isolated and analyzed using hydrodistillation and headspace-GC methods to determine their composition and yield. Seventy-six compounds were identified in the hydrodistilled leaf oil, and 58 compounds were identified by the headspace, respectively, using GC and GC/MS. The main components of the oils were benzaldehyde (73.3%), 1,8-cineole (5.4%), and α-terpinyl acetate (4.4%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Delignification kinetics study on the tetrahydrofurfuryl alcohol/HCl pulping of rice straw / Chen-Lung Ho in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3849–3857 Titre : Delignification kinetics study on the tetrahydrofurfuryl alcohol/HCl pulping of rice straw Type de document : texte imprimé Auteurs : Chen-Lung Ho, Auteur ; Keng-Tung Wu, Auteur ; Eugene I-Chen Wang, Auteur Année de publication : 2011 Article en page(s) : pp. 3849–3857 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Kinetics Résumé : In this study, the delignification kinetics of tetrahydrofurfuryl alcohol (THFA)/HCl pulping of rice straw was investigated. In the atmospheric pressure pulping, two phases of different delignification rates were observed which were closely related to the amount of HCl and temperature. Equations for the transition time of these two phases at various temperatures and catalyst dosages were derived. For optimal cooking control, the transition time of these two phases can be calculated. The cooking showed very low activation energies, which, in phase I and phase II, were only 26.5 kJ and. 32.2 kJ mol−1, respectively. At phase I pulping, delignification was the main reaction with minimal dissolution of carbohydrate fractions. Consequently, the yield loss was low. In phase II, however, when the residual lignin content was less than about 5%, the dissolution of the carbohydrate was greater than the lignin removal, causing a marked reduction in pulp yield. Comparisons of KL/KC (ratio of delignification rate and rate of carbohydrate dissolution) and ΔL/ΔC (ratio of lignin removed and carbohydrate dissolved during pulping) values in phases I and II were made. Results showed that both values were greater in phase I, and both values reached their maxima at 120 °C and catalyst dosage of 0.020 mol L−1. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102184c [article] Delignification kinetics study on the tetrahydrofurfuryl alcohol/HCl pulping of rice straw [texte imprimé] / Chen-Lung Ho, Auteur ; Keng-Tung Wu, Auteur ; Eugene I-Chen Wang, Auteur . - 2011 . - pp. 3849–3857. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3849–3857 Mots-clés : Kinetics Résumé : In this study, the delignification kinetics of tetrahydrofurfuryl alcohol (THFA)/HCl pulping of rice straw was investigated. In the atmospheric pressure pulping, two phases of different delignification rates were observed which were closely related to the amount of HCl and temperature. Equations for the transition time of these two phases at various temperatures and catalyst dosages were derived. For optimal cooking control, the transition time of these two phases can be calculated. The cooking showed very low activation energies, which, in phase I and phase II, were only 26.5 kJ and. 32.2 kJ mol−1, respectively. At phase I pulping, delignification was the main reaction with minimal dissolution of carbohydrate fractions. Consequently, the yield loss was low. In phase II, however, when the residual lignin content was less than about 5%, the dissolution of the carbohydrate was greater than the lignin removal, causing a marked reduction in pulp yield. Comparisons of KL/KC (ratio of delignification rate and rate of carbohydrate dissolution) and ΔL/ΔC (ratio of lignin removed and carbohydrate dissolved during pulping) values in phases I and II were made. Results showed that both values were greater in phase I, and both values reached their maxima at 120 °C and catalyst dosage of 0.020 mol L−1. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102184c