Antibacterial potency for mimosa, quebracho and essential oils of origanum species against acinetobacter pittii, klebsiella pneumoniae and bacillus cereus from diabetic foot patient / Didem Berber in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 6 (06/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 6 (06/2022) . - p. 232-240 Titre : Antibacterial potency for mimosa, quebracho and essential oils of origanum species against acinetobacter pittii, klebsiella pneumoniae and bacillus cereus from diabetic foot patient Type de document : texte imprimé Auteurs : Didem Berber, Auteur ; L. Inanc, Auteur ; Ipek Türkmenoglu, Auteur ; O. Toksöz, Auteur ; Nüzhet Cenk Sesal, Auteur Année de publication : 2022 Article en page(s) : p. 232-240 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Diabète Extraits de plantes Extraits de plantes:Extraits (pharmacie) Huile essentielle d'origan Mimosa et constituants Quebracho Le quebracho est un arbre à écorce ligneuse, mesurant 30 mètres de haut, à feuilles tannées et à fleurs tubulées blanches. Quebracho est l'un des noms communs, en espagnol, d'au moins trois espèces similaires d'arbres originaires du Gran Chaco, en Amérique latine : Schinopsis lorentzii (quebracho colorado santiagueño), de la famille des Anacardiaceae ; Schinopsis balansae (quebracho colorado chaqueño), de la même famille ; Aspidosperma quebracho-blanco (quebracho blanc), de la famille des Apocynaceae. Ces trois espèces sont riches en tanin et fournissent un bois très dur, particulièrement résistant. Leur nom provient de l'espagnol quiebrahacha, qui signifie brise-hache. Statistique Index. décimale : 660.62 Microbiologie industrielle Résumé : The diabetic patients may sometime suffer from foot lesions, foot ulcers and amputation that adversely affect their quality of life. In this respect, good footwear has a critical significance for diabetic foot patients. The aim of this study to evaluate the potential efficacy of mimosa, quebracho, and essential oils of Origanum onites, Origanum onites oleum, and Origanum minutiflorum, against Acinetobacter pittii, Bacillus cereus, and Klebsiella pneumoniae, which was isolated from diabetic foot patient. According to our results, the mimosa extracts were slightly more efficient when compared to quebracho extracts to control the bacterial growth of A. pittii (8.77±0.58-35.12±8.41% inhibition for three doses), and K. pneumoniae (21.40±0.48-47.04±0.51% inhibition) except B. cereus (71.1±0.31-23.51±1.66% inhibition). But these inhibition percentages remained at lower levels. On the other hand, essential oil samples of O. onites, O. onites oleum, and O. minutiflorum at tested doses have considerably high antibacterial effects against A. pittii, B. cereus, and K. pneumoniae. The tested essential oils almost completely inhibited B. cereus with percentages of inhibition ranging from 96.18±2.98-100±0.00. Also, the bacterial growth of K. pneumoniae and A. pittii was inhibited by 88.01±2.36 to 100±0.00% and 71.42±12.57 to 100±0.00%, respectively. Moreover, the essential oils of O. onites, O. onites oleum, and O. minutiflorum, had bactericidal activity against A. pittii, and K. pneumoniae but bacteriostatic activity against B. cereus. This potency for essential oil of Origanum species may be evaluated for diabetic footwear. More detailed technical studies are required for the application of Origanum species to leather footwear. Note de contenu : - MATERIALS AND METHODS : Bacterial strain and test materials - Antibacterial tests - Statistical analyses - RESULTS AND DISCUSSION : Antibacterial efficacy of mimosa extracts against tested bacteria - Antibacterial efficacy of quebracho extracts against tested bacteria - Antibacterial efficacy of essential oils of O. onites, O. onites oleum, and O. minutiflorum - Statistical analyses DOI : https://doi.org/10.34314/jalca.v117i6.4964 En ligne : https://drive.google.com/file/d/1tkUAsnRyp1nzpjK77BOJP0MsQbPbfBEg/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37798 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23490	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Monitoring the mode of action of synthetic and natural biocides against Aeromonas hydrophila by Raman spectroscopy and chemometrics / Megha Mehta in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 15 p. Titre : Monitoring the mode of action of synthetic and natural biocides against Aeromonas hydrophila by Raman spectroscopy and chemometrics Type de document : texte imprimé Auteurs : Megha Mehta, Auteur ; Yang Liu, Auteur ; Mark Waterland, Auteur ; Geoff Holmes, Auteur Année de publication : 2021 Article en page(s) : 15 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aeromonas hydrophila Analyse multivariée Antimicrobiens Chimiométrie Cuirs et peaux -- Conservation Huile essentielle d'origan Inhibiteurs (chimie) Spectroscopie Raman Thiocyano-méthylthiobenzotiazole Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : We have investigated the mode of action of synthetic biocides, (2-(thiocyanomethylthio) benzothiazole(TCMTB), dichlorophen, (commonly used in leather industry for preservation) and natural biocides, oregano and eucalyptus oils, on Aeromonas hydrophila using Raman spectroscopy in collaboration with multivariate analysis and 2D correlation spectroscopy to evaluate whether Raman spectra acquired contained valuable information to study the action of biocides on bacterial cells. The growth of A. hydrophila in clear and outer edge zone of inhibition differ in their reaction with different biocides, which allows us to highlight the differences as a characteristic of two kinds of bacteria. Such classification helps identify oregano oil as the most effective biocide by altering clear and outer edge zone of bacteria. Standard disk diffusion assay method was used for screening biocide bacteria interactions and later analysed by Raman spectroscopy. The paper also presents the introduction of TCMTB and oregano oil into leather processing stages to examine and determine the antimicrobial effect as an application to real-world setting. Therefore, we conclude that Raman spectroscopy with appropriate computational tools constitutes a powerful approach for screening biocides, which provide solutions to all the industries using biocides including leather industry, considering the potentially harmful effect of biocides to humans and the environment. Note de contenu : - MATERIALS AND METHODS : Biocides and bacteria - Biocides, bacteria and leather treatment - Data acquisition and Raman spectral processing - RESULTS AND DISCUSSION : Disk diffusion agar plate test - Raman spectroscopy identifies biomolecular changes due to biocide treatment - Multivariate analysis - Two-dimensional correlation spectroscopy (2D-COS) - Antimicrobial effect of leather treated with biocides - Table 1 : Disk diffusion determined zones of inhibition (mm) for A. hydrophila strain after treatment with TCMTB, DCP, oregano oil and eucalyptus oil DOI : https://doi.org/10.1186/s42825-021-00062-3 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-021-00062-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37546 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

Preparation and characterization of epoxy/oregano oil as an epoxy-based coating material with both antimicrobial effect and increased toughness / S. Zavareh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 2 (03/2015) . - p. 404-414 Titre : Preparation and characterization of epoxy/oregano oil as an epoxy-based coating material with both antimicrobial effect and increased toughness Type de document : texte imprimé Auteurs : S. Zavareh, Auteur ; F. Darvishi, Auteur ; G. Samandari, Auteur Année de publication : 2015 Article en page(s) : p. 404-414 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Epoxydes Huile essentielle d'origan Morphologie (matériaux) Polymères -- Additifs Revêtements:Peinture Thermodurcissables Index. décimale : 667.9 Revêtements et enduits Résumé : The main objective of this work is to prepare an epoxy-based hybrid material with antimicrobial activity and increased toughness using a natural modifier. Therefore, oregano essential oil (OEO) was employed as a new additive for an epoxy thermosetting polymer. Mechanical properties of epoxy/OEO hybrids with different OEO contents were studied. Impact strength and fracture resistance of the hybrids were increased with increasing OEO content up to 15%. With the addition of 15% OEO to epoxy, maximum improvements of 69% and 83% were obtained for impact and fracture properties, respectively. Tensile properties of the hybrid decreased somewhat with increasing OEO content. Morphological properties of the epoxy/OEO hybrids were studied using scanning electron microscopy and Fourier transform infrared spectrometry. A dispersion of micron-sized OEO particles in epoxy matrix with relatively strong interactions between two phases in the interfacial area was observed as the main morphology. Antimicrobial activity of epoxy/OEO hybrids was examined using the disk diffusion method. The hybrid samples clearly showed antimicrobial activity against gram-positive and gram-negative bacteria. The hybrid had higher antimicrobial activity for fungus strain in comparison with bacterial strains. Note de contenu : - EXPERIMENTAL : Materials - Preparation of specimens - Characterization - Antimicrobial activity assay - RESULTS AND DISCUSSION : Mechanical properties - FTIR studies - Morphological properties - Antimicrobial activity DOI : 10.1007/s11998-014-9641-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9641-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23664 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17119	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The durability of antimicrobial effect of leathers finished with oregano oil / Elzbieta Bielak in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 11 (11/2017)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 11 (11/2017) . - p. 377-386 Titre : The durability of antimicrobial effect of leathers finished with oregano oil Type de document : texte imprimé Auteurs : Elzbieta Bielak, Auteur ; Ewa Marcinkowska, Auteur ; Justyna Sygula-Cholewinska, Auteur Année de publication : 2017 Article en page(s) : p. 377-386 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Cuirs et peaux -- Conservation Huile essentielle d'origan Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Essential oils introduced into raw materials in the technological process enable leather to gain antimicrobial properties. These properties were examined toward microorganisms potentially pathogenic to humans and causing biodegradation of leather. The article presents an assessment of antimicrobial activity of cowhide lining leathers fatliquored with the addition of oregano oil at concentrations of 1% and 3% per leather weight after one month storage. Additionally, the durability of this activity for leathers with oregano oil at concentration of 3% was confirmed after 12 months. Antimicrobial effect was tested according to PN-EN ISO 20645:2006 Textile fabrics – Determination of Antibacterial Activity – Agar Diffusion Plate Test. Furthermore, to verify the results of antimicrobial durability of leathers within one year after fatliquoring, the method according to ISO 22196:2011 Measurement of antibacterial activity on plastics and other non-porous surfaces was used. Antimicrobial effect of finished leathers against bacteria Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, yeast Candida albicans and filamentous fungus Scopulariopsis brevicaulis was tested. The obtained results indicated that lining leathers enriched with oregano oil at concentration of 3% per leather weight is characterized by its good and durable antimicrobial effect persisting even one year after adding oil into leather. The results presented in this paper is a continuation of previous studies on animal leather enriching with essential oils. Note de contenu : - Table 1. Antibacterial effect of the antibacterial treatment - Table 2. Assessment schematic for the growth of filamentous fungi on the agar - Table 3. As assessment of antimicrobial effect of leathres fatliquored with the addition of oregano oil at concentrations of 1% and 3% per leather weight after 1 and 12 months of storage - Table 4. Antibacterial activity of the lining leather fatliquored with oregano oil at amount of 3% (per leather weight) to escherichia coli - Table 5. Antibacterial activity of the lining leather fatliquored with oregano oil at amount of 3% (per leather weight) to staphylococcus aureus En ligne : https://drive.google.com/file/d/1eKCDCNYAaGeqXsFlouaNU1H2fAQ01Cri/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29396 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
19363	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 4 / 4)