Analysis of release of free formaldehyde originated from THP salt tannages in leather by high performance liquid chromatography : origanum onites essential oil as free formaldehyde scavenger / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 11 (11/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 11 (11/2013) . - p. 411-419 Titre : Analysis of release of free formaldehyde originated from THP salt tannages in leather by high performance liquid chromatography : origanum onites essential oil as free formaldehyde scavenger Type de document : texte imprimé Auteurs : Eser Eke Bayramoglu, Auteur ; Ali Yorgancioglu, Auteur ; Ersin Onem, Auteur Année de publication : 2013 Article en page(s) : p. 411-419 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chromatographie en phase liquide à hautes performances Cuirs et peaux -- Analyse Formaldéhyde Formaldéhyde -- Elimination Huiles essentielles Produits de nourriture du cuir Sulfate de tétrakis hydroxyméthyl phosphonium Le sulfate de tétrakis hydroxyméthyl phosphonium est un myxobactéricide qui offre une prévention efficace contre les biofilms microbiens dans les eaux de traitement, et ce, pour une vaste gamme de micro-organismes formant des biofilms. Le sulfate de tétrakis (hydroxyméthyl) phosphonium agit principalement en augmentant la perméabilité de la membrane externe de l'enveloppe de la cellule microbienne, ce qui entraîne la libération rapide de protéines et d'autres substances cellulaires par les cellules. En outre, le sulfate de tétrakis (hydroxyméthyl) phosphonium inhibe le processus de sulfatoréduction dans les bactéries réductrices de sulfate. Syntans Tannage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : This study was about the release of free formaldehyde from tetrakis (hydroxymethyl) phosphonium (THP) salts and various syntan leather products, and the antioxidative blocking defense mechanisms of various essential oils. For that purpose, Citrus reticulata L., Melaleuca alternifolia, Origanum onites and Thymus vulgaris essential oils of 2% were used during fatliquoring. Formaldehyde analyses in finished leathers were performed according to TS EN ISO 17226-1 international standard by high performance liquid chromatography (HPLC) test method. To make a comparison on the analyses, some leather samples as a control group were processed without any essential oil. The results were evaluated statistically by using One-Way ANOVA and Duncan tests with the SPSS 15 statistic program. The results showed that Origanum onites essential oil used in fatliquoring process was significantly determined to eliminate the release of free formaldehyde in leather. En ligne : https://drive.google.com/file/d/1WIFwMoU_uyrwPg9YQzBPnXbMFqz7jyEP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19686 [article]

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Antibacterial activity of myrtus communis essential oil used in soaking / Eser Eke Bayramoglu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 5 (09-10/2006) . - p. 217-219 Titre : Antibacterial activity of myrtus communis essential oil used in soaking Type de document : texte imprimé Auteurs : Eser Eke Bayramoglu, Auteur Année de publication : 2006 Article en page(s) : p. 217-219 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens Bactéries -- Comptage Bain de trempe Cuirs et peaux Formulation (Génie chimique) Huile essentielle de Myrtus communis Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, the essential oil of Myrtus communis was used as a bactericide in the soaking process. 1% myrtle oil was applied in comparison with a commercial bactericide which is commonly used in the leather industry (typically containing 7-25% phenol, 4-chloro-3-methyl). The trials showed that Myrtus communis oil has an antibacterial effect in soaking and would be suitable for use in industry. Note de contenu : - Materials - Soaking Process - Microbial count method - Table 1 : Chemical constituents of the essential oils of Myrtus communis - Table 2 : General formulation for soaking processes - Table 3 : Experiment results obtained at the end of 7 and 24 hours soaking period En ligne : https://drive.google.com/file/d/1FB66HutH9XzBpyIRzoHjq6NgdiqMPEQO/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39061 [article]

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Application of L-ascorbic acid as an antioxidative colorment in leather finishing / Sultan Civi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 5 (05/2022) . - p. 179-183 Titre : Application of L-ascorbic acid as an antioxidative colorment in leather finishing Type de document : texte imprimé Auteurs : Sultan Civi, Auteur ; Eser Eke Bayramoglu, Auteur Année de publication : 2022 Article en page(s) : p. 179-183 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antioxydants Blanc (couleur) Colorants Colorimétrie Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuirs et peaux -- Finition Cuirs et peaux -- Teinture Cuirs et peaux de bovins Essais de résilience Photostabilité Résistance à l'abrasion Statistiques Vitamine C Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, chrome tanned bovine crust leathers were dyed white during finishing process. Experiments with 1%, 2%, 3%, 4% and 5% L-ascorbic acid addition were performed on the finishing layer of the finishing application. L-ascorbic acid was not added to the control group and processed according to the standard method. After these processes, color measurement analyzes were performed on Konica Minolta CM 3600d spectrophotometer. In order to investigate the effects of L-ascorbic acid on other performance properties of leather, light fastness test according to TS 1008 EN ISO 105-B02 (2001 TS EN ISO 11640 2001) and dry rub fastness test according to standard method were performed. The results of the study were statistically evaluated according to the NCSS (Number Cruncher Statistical System) method. As a result of the research, it was observed that L-ascorbic acid gave a pearly pink color to the leathers. It was found that the dry rubbing fastness of the leathers treated with L-ascorbic acid improved. In the light fastness tests, the results of the experimental group leathers were recorded better by the blue scale. Note de contenu : - EXPERIMENTS : Finishing applications - Dry rubbing fastness analyses - Color measurement tests of leather samples - Light fastness analysis - Statistical evaluation of results - RESULTS AND DISCUSSION : Results of the appearance of leather - Dry rubbing fastness results - Color measurement analysis results - Light fastness test results - Table 1 : Finishing recipe used in application - Table 2 : Evaluation of dry rub fastness test results - Table 3 : Color measurement evaluation results - Table 4 : Evaluation result of color measurements according to L-ascorbic acid ratio - Table 5 : Light fastness assessment results DOI : https://doi.org/10.34314/jalca.v117i5.4909 En ligne : https://drive.google.com/file/d/15rckbazpKl6t8piNBODpfmqXSkqq6e1B/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37567 [article]

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Application of some plant extracts as biocolorants for leather during finishing process / Roza Mirzamuratova in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 1 (01/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 1 (01/2024) . - p. 3-12 Titre : Application of some plant extracts as biocolorants for leather during finishing process Type de document : texte imprimé Auteurs : Roza Mirzamuratova, Auteur ; Eser Eke Bayramoglu, Auteur ; Rashid Kaldybayev, Auteur Année de publication : 2024 Article en page(s) : p. 3-12 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colorants végétaux Colorimétrie Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuirs et peaux -- Finition Cuirs et peaux -- Teinture Cuirs et peaux de bovins Essais dynamiques Extraits de plantes Résistance à l'abrasion Solidité de la couleur Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this research, chrome-tanned bovine crust leathers were dyed during the finishing process using plant extracts: walnut shell (Juglans regia), oak bark (Quercus cortex), and onion peel (Allium cepa). In this study, the standard recipe applied by the factory was used in the leather finishing process. For this recipe, various plant extracts were used instead of pigments, and groups that did not contain pigment and any dyestuff were formed as the control groups. After these processes, color measurement analyzes were performed on Konica Minolta CM 3600d spectrophotometer. In order to investigate the effects of walnut shell (Juglans regia), oak bark (Quercus cortex), and onion peel (Allium cepa) on the other performance properties of leather, dry and wet rub fastness test according to standard method TS EN ISO 11640 (2001) was performed. The results of the study were statistically evaluated using the NCSS method (Number Cruncher Statistical System). As a result of the study, it was noticed that, depending on the extract, different colors were obtained. It was found that the dry and wet fastness of leathers treated with plant extracts improved. Note de contenu : - EXPERIMENTS : Materials and methods - Color measurement tests of leather samples - Dry and wet rubbing fastness analyses - Statistical evaluation of reseults - RESULTS AND DISCUSSION : Results of the appearance of leather - Dry and wet rubbing fasntess results - Color measurement analysis results - Table 1 : pH value of extracts and chemical pigment - Table 2 : Finsihing recipe used in application - Table 3 : Color measurement test results - Table 4 : Color measurement test results after aging process (24 hours) - Table 5 : Color measurement test results after ageing process (96 hours) - Table 6 : Dry rub fastness test results - Table 7 : Evaluation of dry rub fastness test results - Table 8 : Wet rub fastness test results - Table 9 : Evaluation of wet fastness test results - Table 10 : Evaluation results of color measurements - Table 11 : Evaluation results of color measurements after aging process (24 hours) DOI : https://doi.org/10.34314/jalca.v119i1.8289 En ligne : https://drive.google.com/file/d/1Yf9u2l4ShoE5wPc4K2j_s_8v8mMvVoh_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40344 [article]

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Biodegradation of wet-blue leather with different caldosporium species / Eser Eke Bayramoglu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 3 (05-06/2017) . - p. 123-128 Titre : Biodegradation of wet-blue leather with different caldosporium species Type de document : texte imprimé Auteurs : Eser Eke Bayramoglu, Auteur ; Claudia Florio, Auteur ; Gianluigi Calvanese, Auteur Année de publication : 2017 Article en page(s) : p. 123-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Champignons microscopiques Cuirs et peaux -- Analyse Cuirs et peaux -- Biodégradation Cuirs et peaux de moutons Microscopie Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study includes eight months observation of different Cladosporium species ; C. cladosporioides, C. herbarum and C. oxysporum inoculated on the wet-blue sheep leather. It was identified that the Cladosporium types grew easily and mineralized (oxidized) the leather with their enzymes, despite the chrome III in the wet-blue. Eight mores later, as a result of the optical microscopy-stereoscopy - superficiel analyses, SEM Microscopy/Secondary Electron Detector deeper morphological analysis and SEM Microscopy/X-Ray probe - microanalysis, wet-blue infected with Cladosporium - showed a high amount of calcium sulfate and sodium chloride based crystal clusters. Our resuits indicated that of all the fungi species we studied, a cladosporioides most affected the structure of the wet-blue sheep leather and Cr(III) had no toxic effect for this fungi's genus for eight months. Note de contenu : - Materials and methods - Leather processing - Microbiological analyses - FIGURES : 1. Optical microscope anaysis of the control samples - 2. SEM analysis of the control samples - 3. OM analysis of the wet-blue infected by C. oxysporum (6x) and (40x) - 4. SEM analyses of wet-blue infected by C. oxysporum with grain damage - 5. OM analysis of the wet-blue infected by C. herbarum (6x) and (40x) - 6. SEM analysis of the wet-blues infected by C. herbarum - 7. OM analysis of the wet-blue infected by C. cladosporioides (6x) and (40x) - 8. SEM analysis of the wet-blue infected by C. cladosporioides - 9. SEM X-ray probe microanalysis - A : Crystalline deposits ; B. Leather grain damage - 10. SEM X-ray probe microanalysis of C. cladosporioides - 1 : Crystalline deposits ; 2 : Possible microbiological matter En ligne : https://drive.google.com/file/d/1gh9_fA9Stv3hyxVviYi5Vxr1ZEkLVy8w/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28796 [article]

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Ecological and innovative fungicide for the leather industry : Essential oil of Origanum minutiflorum / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 3 (03/2006)  

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How raman spectroscopy can be used to examine the structural changes caused by certain penicillium species on chrome-tanned leather / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 2 (02/2011)  

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Investigation on reducing chromium quantity in chromium containing wastes from leather industry using oyster mushroom (pleurotus ostreatus) / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 1 (01/2020)  

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Keratin hydrolysis from tannery unhairing process wastes structural property determination and keratin size investigation reducing by electrospinning method / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 7 (07/2024)  

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Possibility of using sigla tree (liquidambar orientalis mill. var orientalis) storax as bactericide in the soaking float / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 2 (02/2010)  

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Preparation of antibacterial fatliquoring agents containing zinc oxide nanoparticles for leather industry / Ali Yorgancioglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 5 (05/2019)  

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Reduction of Cr (VI) formation in leather with herbal extracts / Roza Mirzamuratova in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 2 (02/2024)  

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Research on the production of parchment from turkey skin and its decorative use / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)  

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A research on the use of aluminum sulphate in parchment production and its effects on ageing and color / Nilgün Kayahan Kolan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 7 (07/2022)  

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Unique biocide for the leather industry ; essential oil of oregano / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 11 (11/2007)  

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UV protection against photoageing of garment leathers by ZnO nanoparticles : application of nano ZnO in finishing process as photocatalyst / Bekir Yilmaz in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 6 (11-12/2016)  

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