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Preparation of antibacterial sheepskin with silver nanoparticles : potential for use as a mattress for pressure ulcer prevention / Weite Yang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 3 (03/2012)
[article]
Titre : Preparation of antibacterial sheepskin with silver nanoparticles : potential for use as a mattress for pressure ulcer prevention Type de document : texte imprimé Auteurs : Weite Yang, Auteur ; Xuan Wang, Auteur ; Ying Gong, Auteur ; Li Hui, Auteur ; Wuyong Chen, Auteur ; Carmen Gaidau, Auteur Année de publication : 2012 Article en page(s) : p. 85-91 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Argent
Cuirs et peaux -- Emploi en thérapeutique
Cuirs et peaux de moutons
Nanoparticules
Peau -- Ulcères -- PréventionIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the study, sheepskin was treated with silver nanoparticles, which were prepared at the concentration of 2.4×10-2 g·L-1 with average particles size about 26 nm. And then, the adsorption of the silver nanoparticles by the sheepskin, as well as the morphology and the antibacterial effect of the treated sheepskin were investigated. The UV-vis absorption spectroscopy indicated nearly all of the silver nanoparticles were adsorbed by the sheepskin with this method. From scanning electron microscopy (SEM) observations, it was confirmed that the nanoparticles attached on the surface of the sheepskin. The antibacterial effect of the treated sheepskin was evaluated after repeated perspiration treatments. The results of antibacterial study showed that the treated sheepskin had an antibacterial inhibition of 99.9% against Escherichia coli and Staphylococcus aureus, even after 6 cycles of perspiration treatment, the sheepskin still exhibited a durable antibacterial effect with the inhibition rate above 79.4% and 67.1% respective to the leather and the wool. Thus, this study has provided an eco-friendly alternative for the preparation of antibacterial sheepskin without organic compounds, which would be potentially used as a mattress for pressure ulcer prevention. Note de contenu : - EXPERIMENTAL : Materials - Preparation of silver nanoparticles - Antimicrobial activity of the silver nanoparticles En ligne : https://drive.google.com/file/d/1IjeVq35JlVkkZUgWR5AKGpL321I1NCZx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14420
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 3 (03/2012) . - p. 85-91[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13825 - Périodique Bibliothèque principale Documentaires Disponible 13828 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and biological activities of 1H-indole-1-carboxylic acid aryl esters as a marine antifouling coating / Xuemi Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Synthesis and biological activities of 1H-indole-1-carboxylic acid aryl esters as a marine antifouling coating Type de document : texte imprimé Auteurs : Xuemi Wang, Auteur ; Xuan Wang, Auteur ; Miao Dong, Auteur ; Zhiming Li, Auteur ; Zhongxin Liu, Auteur ; Juyou Lu, Auteur ; Qiang Lin, Auteur ; Jianxin Yang, Auteur Année de publication : 2020 Article en page(s) : p. 553-561 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algues marines
Barnacles
Composés organiques -- Synthèse
Esters aryliques d'acide indole-1-carboxylique
Revêtements antisalissures:Peinture antisalissures
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A series of indole-1-carboxylic acid aryl esters was synthesized with indole and substituted phenols as raw materials. The structures of the target compounds were validated by IR and 1H-NMR spectroscopies. The inhibitory activities of the target compounds and their potencies against marine fouling organisms were investigated. The results showed that the target compounds had significant inhibitory effects on the growth of three seaweeds: Isochrysis galbana, Platymonas subcordiformis, and Navicula, and the target compounds also had excellent inhibition on the survival of barnacle larvae. The substituent structure–activity relationships revealed a significant effect on biological inhibition activity: Compounds substituted by electron-withdrawing groups had greater bioactivities than those containing electron-donating groups. Release rate of antifoulant and marine field tests indicated the final compounds had an outstanding antifouling potency against marine fouling organisms. Note de contenu : - EXPERIMENTAL : Chemistry : general procedures - General procedure for the preparation of indole derivatives - Experimental method of growth inhibition of marine algae - Experimental method of biological activity against barnacles - Release rate of antifoulant - Experimental of marine field tests
- RESULTS AND DISCUSSION : Inhibition on marine algae growth - Inhibition on barnacle larvae - Release rate of antifoulant - Application as antifouling coatingsDOI : https://doi.org/10.1007/s11998-019-00305-3 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34003
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 2 (03/2020) . - p. 553-561[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible