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Characterization of the portuguese-grown cistus ladanifer essential oil / Paula B. Gomes in The journal of essential oil research, Vol. 17 N° 2 (Mars-Avril 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 160-165 Titre : Characterization of the portuguese-grown cistus ladanifer essential oil Type de document : texte imprimé Auteurs : Paula B. Gomes, Auteur ; Vera G. Mata, Auteur ; A. E. Rodrigues, Auteur Année de publication : 2006 Article en page(s) : pp. 160-165 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cistus  ladanifer  Cistaceae  Rockrose  Essential  oil  composition  Viridiflorol Résumé : The chemical composition of the cistus oil from Portuguese-grown rockrose (Cistus ladanifer) was determined using GC and GC/MS. A comparison was also made in terms of the geographical source and use of either dry or fresh plant material. The cistus oil herein obtained was richer in amber-like compounds and had a low content of monoterpenes when compared to the usual values found in the literature. Moreover, it presented a relatively high content of ambrox (amber odor), which usually is only reported in labdanum oil. The major constituents were three sesquiterpene alcohols: viridiflorol (13.6–17.4%), globulol (3.1–5.0%) and an unknown sesquiterpene alcohol (2.7–6.0%), as well as the diterpene alcohol 15-nor-labdan-8-ol (1.7–5.2%). Three samples of commercially available cistus oil were also analyzed and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698864?tab=permissions [...] [article] Characterization of the portuguese-grown cistus ladanifer essential oil [texte imprimé] / Paula B. Gomes, Auteur ; Vera G. Mata, Auteur ; A. E. Rodrigues, Auteur . - 2006 . - pp. 160-165. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 2 (Mars-Avril 2005) . - pp. 160-165 Mots-clés : Cistus  ladanifer  Cistaceae  Rockrose  Essential  oil  composition  Viridiflorol Résumé : The chemical composition of the cistus oil from Portuguese-grown rockrose (Cistus ladanifer) was determined using GC and GC/MS. A comparison was also made in terms of the geographical source and use of either dry or fresh plant material. The cistus oil herein obtained was richer in amber-like compounds and had a low content of monoterpenes when compared to the usual values found in the literature. Moreover, it presented a relatively high content of ambrox (amber odor), which usually is only reported in labdanum oil. The major constituents were three sesquiterpene alcohols: viridiflorol (13.6–17.4%), globulol (3.1–5.0%) and an unknown sesquiterpene alcohol (2.7–6.0%), as well as the diterpene alcohol 15-nor-labdan-8-ol (1.7–5.2%). Three samples of commercially available cistus oil were also analyzed and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698864?tab=permissions [...]

Microencapsulation of limonene for textile application / Sofia N. Rodrigues in Industrial & engineering chemistry research, Vol. 47 n°12 (Juin 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°12 (Juin 2008) . - p. 4142–4147 Titre : Microencapsulation of limonene for textile application Type de document : texte imprimé Auteurs : Sofia N. Rodrigues, Auteur ; Isabel Fernandes, Auteur ; Isabel M. Martins, Auteur ; Vera G. Mata, Auteur Année de publication : 2008 Article en page(s) : p. 4142–4147 Note générale : Bibliogr. p. 4246-4247 Langues : Anglais (eng) Mots-clés : Polyurethane−urea  microcapsules  --  textile  applications;  Limonene;  Polymerization; Résumé : Polyurethane−urea microcapsules with limonene oil as the active agent were produced by interfacial polymerization, and their suitability for textile applications was studied. Experimental conditions for the textile substrates impregnation were based on industrial requirements and set up at laboratory scale using a mini-foulard. The success of the polymerization reaction leading to the formation of the polyurethane−urea shell was checked by Fourier transform infrared spectroscopy. Particle size distributions and morphology of the microcapsules were studied using a particle size analyzer (Coulter LS230), optical microscopy, and scanning electron microscopy. The effectiveness of the textiles impregnation and the durability of the impregnation effect were evaluated by scanning electron microscopy and by headspace/GC/FID. Under the present research, a product was developed and its performance, in regard to industrial requirements, was successfully tested. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800090c [article] Microencapsulation of limonene for textile application [texte imprimé] / Sofia N. Rodrigues, Auteur ; Isabel Fernandes, Auteur ; Isabel M. Martins, Auteur ; Vera G. Mata, Auteur . - 2008 . - p. 4142–4147. Bibliogr. p. 4246-4247 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°12 (Juin 2008) . - p. 4142–4147 Mots-clés : Polyurethane−urea  microcapsules  --  textile  applications;  Limonene;  Polymerization; Résumé : Polyurethane−urea microcapsules with limonene oil as the active agent were produced by interfacial polymerization, and their suitability for textile applications was studied. Experimental conditions for the textile substrates impregnation were based on industrial requirements and set up at laboratory scale using a mini-foulard. The success of the polymerization reaction leading to the formation of the polyurethane−urea shell was checked by Fourier transform infrared spectroscopy. Particle size distributions and morphology of the microcapsules were studied using a particle size analyzer (Coulter LS230), optical microscopy, and scanning electron microscopy. The effectiveness of the textiles impregnation and the durability of the impregnation effect were evaluated by scanning electron microscopy and by headspace/GC/FID. Under the present research, a product was developed and its performance, in regard to industrial requirements, was successfully tested. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800090c