An examination of inactivation efficacy of NaCl and boric acid on bacteria isolated from salted hides / Meral Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 5 (05/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 5 (05/2013) . - p. 171-179 Titre : An examination of inactivation efficacy of NaCl and boric acid on bacteria isolated from salted hides Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; R. Cicek, Auteur ; Pinar Caglayan, Auteur Année de publication : 2013 Article en page(s) : p. 171-179 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Bactéries -- Inactivation Borique, Acide Chlorure de sodium Le chlorure de sodium est un composé chimique de formule NaCl. On l'appelle plus communément sel de table ou de cuisine, ou tout simplement sel dans le langage courant. C'est le principal produit dissous dans l'eau de mer ; on l'appelle alors sel marin. On l'obtient : dans des marais salants par évaporation de l'eau de mer, dans des mines, par extraction du sel gemme (halite) ou en le synthétisant lors de réactions à hautes températures entre du dichlore (Cl2) et du sodium métallique (Na). Le chlorure de sodium est utilisé dans l'industrie chimique pour produire du chlore, de la soude caustique et de l’hydrogène. Cuirs et peaux -- Conservation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Due to isolation of bacteria in high number on the salt-pack cured hides in our recent studies, the inactivation efficacy of different concentrations of NaCl and Boric acid, used as curing agents, on Gram-positive (Staphylococcus epidermidis and Enterococcus faecium), Gram-positive endospore forming bacteria (Bacillus pumilus and Bacillus licheniformis), Gram-negative bacteria (Pseudomonas aeruginosa and Pseudomonas fluorescens) and the mixed culture of these isolates was investigated. These proteolytic and lipolytic bacteria were isolated from the salted hides. Inactivation efficacy of NaCl and Boric acid on the bacteria was examined in Nutrient Broth and Nutrient Agar media containing 5%, 10%, 15%, 20%, 25%, 30% NaCl; 1%, 2%, 3%, 4%, 5%, 7% Boric acid; and both 5%, 10%, 15% NaCl and 1% Boric acid. In addition, the test bacteria were inoculated in Nutrient Broth containing 20%, 25%, 30% NaCl and 2%, 3%, 4%, 5%, 7% Boric acid and incubated for 24 hours at 35°C. Afterwards, viable bacterial cell counts were determined on NaCl-free Nutrient Agar and boric acid-free Nutrient Agar. The data obtained from this study showed that bacterial growth was prevented by high concentrations of NaCl and boric acid, but the bacteria were still alive and complete destruction of the test bacteria was not accomplished. When NaCl and Boric acid were removed from the hides with the first soaking process, bacteria on the hides may damage the hides during a long main soaking process. As a conclusion, more effective antibacterial treatments should be applied to fresh hides to completely destroy proteolytic and lipolytic bacteria on hides. Note de contenu : - EXPERIMENTAL : Test bacteria - Chemicals - O.5 Mc Farland standard - Determination of protease activity - Determination of lipase activity - Examination of growth of the test isolates and mixed culture of these isolates in test media containing different NaCl concentrations - Examination of growth of the test isolates and mixed culture in the test media containing different boric acid concentrations - Examination of growth of the test isolates and mixed culture in the test media containing 1% boric acid containing 5%, 10% and 15% NaCl En ligne : https://drive.google.com/file/d/1_aX6JT_MFF0G2Y_icVhRm0a02UWgyqQ4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18545 [article]

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Antibacterial activity of sophorolipids produced by Candida bombicola on Gram-positive and Gram-negative bacteria isolated from salted hides / Daniel K. Y. Solaiman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 10 (10/2016)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 10 (10/2016) . - p. 358-364 Titre : Antibacterial activity of sophorolipids produced by Candida bombicola on Gram-positive and Gram-negative bacteria isolated from salted hides Type de document : texte imprimé Auteurs : Daniel K. Y. Solaiman, Auteur ; Richard Ashby, Auteur ; Meral Birbir, Auteur ; Pinar Caglayan, Auteur Année de publication : 2016 Article en page(s) : p. 358-364 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Bactéries à gram négatif Bactéries à gram positif Candida Cuirs et peaux -- Conservation Glycolipides Sophorolipides Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Salted hides and soaked hides treated with certain antibacterial agents, may still contain different proteolytic and lipolytic Gram-positive and Gram-negative bacteria that affect the quality of leather adversely. The prevalence of bacteria resistant to antimicrobial agents in the leather industry has drawn attention of scientists to search new and effective antimicrobial agents. Examination of antimicrobial glycolipids such as sophorolipids for their effectiveness against proteolytic and lipolytic hide-degrading microorganisms, may offer important information. Hence, we describe a research that evaluates the susceptibility of various hide-degrading bacteria to sophorolipids. These extracellular glycolipids were produced by fermentation using Candida bombicola ATCC 22214. Palmitic acid, stearic acid, and oleic acid were used respectively to produce SL-p, SL-s, and SL-o. The minimal inhibitory concentrations (MICs) of SL-p, SL-s, and SL-o against Gram-positive endospore-forming bacteria (Bacillus licheniformis, B. pumilus and B. mycoides), Gram-positive bacteria (Enterococcus faecium, Aerococcus viridans, Staphylococcus xylosus, S. cohnii and S. equorum), Gram-negative bacteria (Pseudomonas luteola, Enterobacter cloacae, E. sakazakii and Vibrio fluvialis), and mixed culture of these isolates were examined using an agar dilution method. The MICs of both SL-p and SL-o against the test bacteria were determined as 19.5 µg/mL, with an exception that E. cloacae was inhibited by SL-o at a MIC of 9.76 µg/mL. Although MICs of SL-p did not change against the test bacteria, the MICs of SL-s (ranging from 4.88 µg/mL to 19.5 µg/mL) changed according to species of the test bacteria. The lowest MICs of SL-s were found to be 4.88 µg/mL against B. licheniformis, B. pumilus, P. luteola, S. xylosus and B. mycoides. The MICs of SL-p, SL-s, and SL-o against the mixed bacterial culture were detected as the same (19.5 µg/mL). In conclusion, SL-p, SL-s, and SL-o inhibited the growth of 12 different hide bacteria and their mixed culture, and have broad-spectrum activity. The results obtained in the present study may be valuable for the development of SL-p, SL-s, and SL-o as antimicrobial surfactants in the preservation and soaking processes of hides and skins. Note de contenu : - Test microorganisms - Production of sophorolipids - Agar dilution method En ligne : https://drive.google.com/file/d/1_1T2en2bjAvf3Fync8UPQ5O5QWMSRfdx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27021 [article]

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Antibacterial properties of several lichen extracts against two moderately halophilic bacteria from salted sheepskins / Ipek Türkmenoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 4 (04/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 4 (04/2022) . - p. 153-163 Titre : Antibacterial properties of several lichen extracts against two moderately halophilic bacteria from salted sheepskins Type de document : texte imprimé Auteurs : Ipek Türkmenoglu, Auteur ; O. Toksöz, Auteur ; Didem Berber, Auteur ; Pinar Caglayan, Auteur ; Meral Birbir, Auteur ; Nüzhet Cenk Sesal, Auteur Année de publication : 2022 Article en page(s) : p. 153-163 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Bactéries halophiles Cuirs et peaux de moutons Essais (technologie) Extraction (chimie) Extraits de plantes Lichens et constituants Statistique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : It is well known that possible undesirable defects in finished leathers can result from microbial activities on the salted raw hides/skins during storage. The traditionally used salt curing method can control bacterial activities on the raw stock, but it does not seem possible to completely eliminate microbial attacks. Moderately halophilic bacteria can cause serious damage to hides/skins. From this point of view, potential procedures such as applying new antibacterial agents in the leather industry should be considered. Since some lichen species have been indicated for their promising biological efficacies in the literature; most researchers have focused on their potencies in various fields including leather industry from ancient times. In this study, the bacterial growth of proteolytic and lipolytic Gram-negative moderately halophilic bacteria, Chromohalobacter canadensis (YN6) and Halomonas eurihalina (BL5), from salted sheepskin samples were tested with the extracts of Usnea sp., Plastismatia glauca, Ramalina farinacea, Evernia divaricata, Bryoria capillaris, Hypogymnia tubulosa, Pseudevernia furfuracea and Lobaria pulmonaria. Some of these lichen species were found to be successful to inhibit the bacterial growth of C. canadensis (YN6) and H. eurihalina (BL5). In conclusion, lichen extracts may be utilized in stacked raw hides/skins in tanneries or warehouses to control moderately halophilic bacteria which causes several defects on leather. Note de contenu : - Moderately halophilic test bacteria - Lichen samples - Extraction of lichen samples - Antibacterial tests - Statistical analysis DOI : https://doi.org/10.34314/jalca.v117i4.4898 En ligne : https://drive.google.com/file/d/1JpK270mPD-iuFdcBl9PUzESigAqLbYrc/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37562 [article]

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Antibiotic susceptibility patterns of gram-negative moderately halophilic bacteria isolated from salted skins / Pinar Caglayan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 2 (03-04/2020) . - p. 67-76 Titre : Antibiotic susceptibility patterns of gram-negative moderately halophilic bacteria isolated from salted skins Type de document : texte imprimé Auteurs : Pinar Caglayan, Auteur ; Meral Birbir, Auteur ; Antonio Ventosa, Auteur Année de publication : 2020 Article en page(s) : p. 67-76 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Bactéries à gram négatif Cuirs et peaux de chèvres Résistances aux antibiotiques Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Antimicrobial activities of 16 different antibiotics against 47 Gram-negative bacteria isolated from salted skin samples were examined by Kirby-Bauer disc diffusion method. In the present study 10 strains isolated from 6 salted goatskin samples belonging to Russia, South Africa, Bulgaria, Australia, and 37 strains isolated from 14 salted sheepskin samples belonging to Greece, Australia, Bulgaria, South Africa, Israel, USA, Turkey were used as test strains. Susceptibilities of Halomonas venusta, Halomonas zhanjiangensis, Chromohalobacter beijerinckii, Halomonas alkaliphila, Halomonas eurihalina, Chromohalobacter israelensis, Halomonas halodenitrificans, Halomonas halmophila, Chromohalobacter canadensis, Chromohalobacter japonicus, ldiomarina loihiensis against amikacin, gentamicin, tobramycin, cefadroxil were not detected. In addition, susceptibilities of Halomonas eurihalina, Chromohalobacter israelensis and Chromohalobacter beijerinckii against sulfamethoxazole-trimethoprim and ampicillin ; aztreonam and ampicillin ; ampicillin-sulbactann and ampicillin were not observed, respectively. Although inhibition zones of Halomonas halodenitrificans (15-20mm), Halomonas halmophila (10-15mm), Chromohalobacterjaponicus (22-23mm), Idiomarina loihiensis (15mm) against ampicillin were detected, the other strains did not show any inhibition zones. All test strains were susceptible to the other antibiotics such as chloramphenicol, meropenem, imipenem, cefoxitin, cefuroxime, ceftriaxone, amoxycillin/clavulanic acid and piperacillin/tazobactam. All strains except Halomonas eurihalina were found to be susceptible to sulfamethoxazole-trimethoprim. The experimental results of this study demonstrated that 38%, 36%, 26% of the Gram-negative bacterial species isolated from salted sheep and goat skins were resistant against 31%, 25%, 38% of the antibiotics tested. Therefore, effective antibacterial applications should be applied in curing salt to kill multidrug resistant moderately halophilic Gram-negative bacterial species in leather industry. Note de contenu : - Moderately halophilic bacterial isolates - Examination of susceptibilities of the isolates against antibiotics using Kirby-Bauer disc diffusion method - Table 1 : Inhibition zone diameters (mm) of gram-negative moderately halophilic bacteria against different antibiotics - Table 2 : Multidrug resistance profiles of gram negative moderately halophilic bacteria isolated from salted skin samples En ligne : https://drive.google.com/file/d/1klssRAKDJ8jaSSzSS5OqEWs0c14hNXSL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33911 [article]

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Antifungal activities against mould and yeast strains / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 4 (07-08/1996)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 80, N° 4 (07-08/1996) . - p. 114-117 Titre : Antifungal activities against mould and yeast strains Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; O. Özyaral, Auteur ; C. Johansson, Auteur ; A. Ilgaz, Auteur Année de publication : 1996 Article en page(s) : p. 114-117 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The efficacy of three commercially available fungicides was determined on 20 fungal species and nine yeast species isolated from Turkish vegetable tanned sole leathers, chrome tanned hides (blue stock), 1-2 years and older chrome tanned leather, new and used shoes, and human feet. Each of the isolated organisms, whether fungi or yeast were treated with a series of dilutions of the fungicides to determine their relative effectiveness. The active ingredients of the commercially available fungicides were : isotiazoline and a quaternary ammonium compound (Fungicide 1A), benzthiazole (Fungicide B), and p-chloro-m-cresol with o-phenylphenol (Fungicide C). Fungal attack was controlled with fungicide A at a 1:16 dilution, fungicide C were more effective than fungicide B in controlling fungal growth on leather. Fungicide A at 1:128 dilution, fungicide B at 1:64 dilution and fungicide C at 1:128 dilution exerted complete protection against yeast growth. En ligne : https://drive.google.com/file/d/1suUFroIcVc9jJ25z22d1vlsbATbsDtOp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8122 [article]

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Applying electric current to inactivate gram-negative bacteria isolated from salt-packed-cured hides / Yasar Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 1 (01-02/2013)  

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Characterization of halotolerant bacillus species isolated from salt samples collected from leather factories in Turkey / E. Yilmaz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 4 (04/2019)  

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Characterization of moderately halophilic bacteria from salt-pack-cured hides / Pinar Caglayan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 5 (09-10/2015)  

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Controlling the growth of extremely halophilic bacteria on brine cured cattle-hides / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 5 (09-10/2000)  

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Detection of yeast strains in chrome tanned leather and shoes / Meral Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVII, N° 12 (12/1992)  

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Determination of minimum inhibitory concentrations of sophorolipids against selected halotolerant and moderately halophilic bacteria, and extremely halophilic archaea isolated from salt samples and salted skins / R. D. Ashby in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 8 (08/2024)  

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Efficacy assessment of bactericide containing didecyldimethylammonium chloride on bacteria found in soak liquor at different exposure times / Didem Berber in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 11 (11/2010)  

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Efficacy of antimicrobial agent containing sodium dimethyldithiocarbamate against halobacterium salinarum, haloarcula salaria and haloarcula tradensis causing red heat on salted sheepskins / Pinar Caglayan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)  

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Efficacy of usnea sp. extracts in preventing biofilm formation by bacillus species isolated from soaking liquor samples / Didem Berber in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 6 (06/2020)  

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Elimination of antibiotic resistant enterobacteriaceae via combined application of direct electric current, alternating electric current and 2-thiocyanomethylthio benzothiazole / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 2 (03-04/2019)  

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Examination of bacterial and archael populations in salt, salted and soaked hide and soak liquors via fluorescent in situ hybridization / Didem Berber in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 6 (11-12/2010)  

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Examination of bacterial populations in salt, salted hides, soaked hides and soak liquors / Didem Berber in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 10 (10/2010)  

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Examination of catabolic activities of enterobacteriaceae isolated from soaked sheep skins and cattle hides / Eda Yazici in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 3 (05-06/2018)  

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Examination of efficiency and sufficiency of salt-pack curing method / Emel Aslan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 3 (05-06/2011)  

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Examination of gram-negative bacteria on salt-pack cured hides / Emel Aslan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 4 (04/2012)  

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