An examination of antimicrobial activity of lining leathers fatliquored with essential oils / Elzbieta Bielak in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 6 (06/2016)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 6 (06/2016) . - p. 213-220 Titre : An examination of antimicrobial activity of lining leathers fatliquored with essential oils Type de document : texte imprimé Auteurs : Elzbieta Bielak, Auteur ; Ewa Marcinkowska, Auteur ; Justyna Sygula-Cholewinska, Auteur ; Jan Golonka, Auteur Année de publication : 2016 Article en page(s) : p. 213-220 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Cuirs et peaux -- Conservation Huiles essentielles Produits de conservation du cuir Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : To prevent losses caused by microbiological decay of leathers during technological processing, biocidal and biostatic chemical agents are used. They are introduced into the material structure at various stages of the tanning process. It has been shown that some of these agents are not neutral to human health and to the environment. Thus, substitutes for chemical preparations of appropriate efficiency in control of bacteria and fungi, but being safe to humans and the environment are sought. Suitability has been adequately confirmed by research performed worldwide on essential oils. In this paper antimicrobial resistance of lining leathers protected with essential oils extracted from plants Cinnamomum verum, Eucalyptus globulus, Origanum vulgare, Leptospermum scoparium and Thymus vulgaris is investigated. They were introduced into the leather at the fatliquoring stage at 5% per weight of leather. Antimicrobial activity of samples oiled with essential oils and controls (without these oils) was evaluated against bacteria Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and yeasts Candida albicans after 1 and 6 months. The growth inhibition zone around leather samples and microorganism growth, or lack of growth, within the sample-medium contact zone was determined. Investigations have confirmed the efficiency of three of five proposed oils: oregano, cinnamon and thyme. The strongest and most longlasting antimicrobial activity was observed for leathers preserved with oregano oil. Insufficient effect was found for leathers oiled with manuka and eucalyptus oils. Note de contenu : - MATERIAL : Leather - Essential oils - METHODS : Preparing leather for testing - Microbiological examination En ligne : https://drive.google.com/file/d/1xNdsrdg9HNPYLjDvI0PNLgaYi_VZhvZ5/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26441 [article]

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Leather goods notified to the rapex system in the years 2004-2017 - Notification analysis for countries of manufacture and notifying countries / Elzbieta Bielak in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 5 (09-10/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 5 (09-10/2018) . - p. 241-246 Titre : Leather goods notified to the rapex system in the years 2004-2017 - Notification analysis for countries of manufacture and notifying countries Type de document : texte imprimé Auteurs : Elzbieta Bielak, Auteur ; Gabriela Zielinska, Auteur Année de publication : 2018 Article en page(s) : p. 241-246 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Consommateurs -- Protection Cuir Maroquinerie Produits chimiques -- Toxicologie Substances dangereuses Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper analyses information pertaining to notifications of unsafe leather goods submitted to the EU Rapid Exchange of Information System (RAPEX) in the years 2004-2017. The number of leather goods reported in the system has been compared to total number of notifications on dangerous products classified in the category 'Clothing, textiles and fashion items' that includes leather goods. The notifications were analysed for the country of origin of leather goods as well as for the notifying country. This allows identification of countries from which the largest number of dangerous leather goods come, i.e., China, India and Pakistan, as well as countries most active in detecting them in their own domestic markets, i.e., Germany, Spain and Estonia. The article presents also results of surveys related to opinions of Polish consumers towards the safety of leather goods they purchase as well as their awareness about the presence and functioning of the RAPEX system. The research showed the most of Polish consumers cannot clearly indicate whether the leather goods they buy are safe for health or not. Moreover, most of Polish customers have no knowledge of the presence and functioning of the RAPEX system. Note de contenu : - Countries of origin of dangerous leather goods notified in the RAPEX system - Countries notifying dangerous leather goods in the RAPEX system - The surveys on Polish consumer awareness about the safety of leather goods and the presence and operation of the RAPEX system - Fig. 1 : Countries oforigin of leather goods notified in the RAPEX system - Fig. 2 : Countries manufacturing leather goods most often notified in the RAPEX system in the years 2004-2017 - Fig. 3 : Countries notifying leather goods to the RAPEX system - Fig. 4 : Countries most frequently notifying leather goods in the RAPEX system in the years 2004-2017 - Fig. 5 : Leather goods bought most frequently by Polish consumers En ligne : https://drive.google.com/file/d/1hJ3ad5JZgmamd9WcVaBfxdfHsQ7w3uZ6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31095 [article]

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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]

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