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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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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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Titre : Examination of bacterial populations in salt, salted hides, soaked hides and soak liquors Type de document : texte imprimé Auteurs : Didem Berber, Auteur ; Meral Birbir, Auteur Année de publication : 2010 Article en page(s) : p. 320-326 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study was performed to evaluate the efficiency of salt curing and soaking methods containing antibacterial agents. The bacteria adversely affecting hide quality because of hide preservation method and soaking process were examined in salt (n=40), salted hide (n=36), soaked hide (n=34) and soak liquor (n=19) samples obtained from different tanneries in Leather Organized Tannery Region, Tuzla-?stanbul, Turkiye. Most of the hides examined in this study (83%) were imported from abroad. The pH, moisture content %, ash content % and salt saturation % of the salted hides were determined. In the salted hides, the pH values of all samples (pH 6–9) and moisture content (49–66%) in 28% of the samples were found to be appropriate for bacterial growth. It was determined that ash content in 25% (10–14%) of the salted hides and salt saturation in 22% (65–84%) of the salted hides were suitable for the growth of mesophilic bacteria. Despite the salt-curing of hides, proteolytic and lipolytic mesophilic bacteria were isolated from the hides in high numbers. Proteolytic and lipolytic extremely halophilic bacteria were observed in the most samples of salt and salted hides. These bacterial counts were 102–104 c.f.u./g in the salt samples whereas they were 102–106 c.f.u./g in the salted hides. Although proteolytic and lipolytic mesophilic bacteria were 105–108 c.f.u./g in 97% of the soaked hide samples, they were 105–106 c.f.u./ml only in 42% of the soak liquors. In conclusion, it was determined that this hide preservation method was not adequate to inactivate bacterial activity. Hence, bacterial activity was high in the salted and soaked hides and also the concentration of antibacterial agents used in the soaking process was not sufficient. It is believed that eliminating of these problems will provide to increase hide quality. En ligne : https://drive.google.com/file/d/1650X8nvuhnZu1ubObPCd-z9-IlqEiojQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10515
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 10 (10/2010) . - p. 320-326[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012504 - Périodique Bibliothèque principale Documentaires Disponible 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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Titre : Examination of catabolic activities of enterobacteriaceae isolated from soaked sheep skins and cattle hides Type de document : texte imprimé Auteurs : Eda Yazici, Auteur ; Meral Birbir, Auteur Année de publication : 2018 Article en page(s) : p. 130-140 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bactéries -- Identification
CatabolismeLe catabolisme est l'ensemble des réactions de dégradations moléculaires de l'organisme considéré. Il est le contraire de l'anabolisme, ensemble des réactions de synthèse. Le catabolisme et l'anabolisme sont les deux composantes du métabolisme.
Les réactions de catabolisme sont des oxydations (ou des déshydrogénations) et elles sont thermodynamiquement favorables, c'est-à -dire qu'elles sont exergoniques (cédant de l'énergie chimique, produisant de l'énergie).
Les réactions du catabolisme des protides, glucides, lipides, acides nucléiques, etc., sont toutes intimement liées. Il s'agit d'un enchaînement de réactions chimiques.
Cuirs et peaux -- Conservation
Cuirs et peaux de bovins
Cuirs et peaux de moutons
EntérobactériacéesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Detailed examination of the members of family Enterobacteriaceae found on soaked sheepskins and cattle hides offers important information about enteric species on the samples, the efficiency of antibacterial agents used in soaking process against these enteric species and their roles in deterioration of skins or hides during soaking process. Hence, the goal of this study was to examine members of the family Enterobacteriaceae on soaked sheepskins and cattle hides treated with antibacterial agent. In this study, bacterial species belonging to the family Enterobacteriaceae on five soaked sheepskins and ten cattle hides were identified using API® 20E test kits and the other biochemical tests. While Citrobacter freundii, Citrobacter koseri, Cronobacter sakazakii, Enterobacter amnigenus, Enterobacter cloacae, Kluyvera intermedia, Morganella morganii, Proteus mirabilis and Providencia rettgeri were isolated from the soaked sheepskins, Citrobacter koseri, Cronobacter sakazakii, Ewingella americana, Kluyvera intermedia, Morganella morganii, Providencia rettgeri, Serratia marcescens, Serratia plymuthica and Serratia rubidae were obtained from the soaked cattle hides. A fairly high percentage of soaked skin and hide samples contained Enterobacteriaceae members which have catabolic activities for deterioration of skins and hides. The presence of the members of Enterobacteriaceae on the soaked skin and hide samples was thought to be related to faecal contamination, the animal itself, environmental sources and inadequate preservation. As a conclusion, efficient antibacterial treatments should be applied in soaking process to kilt Enterobacteriaceae members which may adversely affect leather quality. Note de contenu : - EXPERIMENTAL PROCEDURES : Soaked sheepskin and cattle hide samples - Examination of pH values of the soaked sheepskin and cattle hide samples - Isolation of members of the family enterobacteriaceae from the soaked hide and skin samples and their identification - Oxidase activities of the enteric bacteria - Catalase activities of the enteric bacteria Protease activities of the enteric bacteria - Lipase activities of the enteric bacteria En ligne : https://drive.google.com/file/d/1wcGfsLt1Q4tlCVMjs4ATOYomxtrNZd8F/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30793
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 3 (05-06/2018) . - p. 130-140[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20058 - Périodique Bibliothèque principale Documentaires Disponible Examination of crust leather for residuals from a potential hide preservative / David G. Bailey in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 5 (05/1991)
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Titre : Examination of crust leather for residuals from a potential hide preservative Type de document : texte imprimé Auteurs : David G. Bailey, Auteur Année de publication : 1991 Article en page(s) : p. 185-188 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Potassium dimethyldithiocarbamate ( KDMDC) is a commercially available antimicrobial preservative registered by EPA for a variety of uses. This chemical has potential as an adjunct to brine curing for the preservation of cattlehides. KDMDC added to a brine raceway would permeate the hide during hide curing. This research was performed to determine whether or not this chemical could persist in the leather produced from brine-cured hides. It is theoritically possible that residual KDMDC in leather products could be extracted by perspiration creating a potential health hazard for the user. KDMDC was applied at normal and four-times-recommended application levels during brine curing of cattlehides. The cured hides were processed into crust leather that were then extracted with synthetic perspiration solution and the leachate analyzed for KDMDC by HPLC. Residual KDMDC was not found in any of the samples examined. En ligne : https://drive.google.com/file/d/1Lc34gqHx9oDmXziEYZOqEbQwfQwhwyct/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8505
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 5 (05/1991) . - p. 185-188[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006880 - Périodique Bibliothèque principale Documentaires Disponible 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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Titre : Examination of efficiency and sufficiency of salt-pack curing method Type de document : texte imprimé Auteurs : Emel Aslan, Auteur ; Meral Birbir, Auteur Année de publication : 2011 Article en page(s) : p. 98-103 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Conservation Tags : Peau 'Méthodes conservation' 'Cristaux sel' 'Teneur humidité' cendres' 'Mesure pH' 'Prolifération bactérienne' 'Bactéries lipolytique' mésophiles' protéolytiques' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Conservation defects affect leather quality adversely and cause important economic losses. Therefore, the goal of this study was to evaluate hide quality by comparing important parameters of salt-pack cured hides and determine efficiency and sufficiency of the curing method in the areas both with and without salt crystals present on the hides. The areas with and without salt crystals on the salt-pack cured hide samples, (collected from different tanneries in the leather Organized Tannery Region, Tuzla-Istanbul-Turkey), were examined in terms of pH values, moisture and ash contents, brine saturations, total mesophile, proteolytic and lipolytic mesophile bacterial numbers. The pH values of the both areas of all the hide samples (6.3-7.4) were found to be optimum for bacterial growth. Moisture contents of the areas without salt crystals present on the hide samples (42-57 %). Ash contents and salt saturations of both types of area of all the hide samples (21-36 %) and 100 % respectively) were found to be the same as standard values. Although the hides were salt-pack cured, high numbers of mesophile, proteolytic and lipolytic mesophile bacteria were isolated from both areas of the hides. Mean values of the mesophile (2X10 7 c.f.u/g, 1.5 X 10 7 c.f.u./g). As a conclusion, due to an inadequately applied salt-pack curing process, this method was not a satisfactory method to prevent bacterial proliferation on hides. Hence, the traditional salt-pack curing method should be modified to improve the counter bacterial effect. Note de contenu : - Collection of the salt-pack cured hide samples from different tanneries
- Measurement of pH values of the areas with and without salt crystals of the salt-pack cured hides
- Moisture, ash and salt saturation of the areas with and without salt crystals of the salt-pack cured hides
- Examination of mesophilic, proteolytic and lipolytic mesophilic bacteria at the areas with and without salt crystals of the salt-pack cured hides.En ligne : https://drive.google.com/file/d/1g_fTb0FIPiCrFlfl4DmiG47O4D8ivFD2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11877
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 3 (05-06/2011) . - p. 98-103[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013132 - Périodique Bibliothèque principale Documentaires Disponible 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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Titre : Examination of gram-negative bacteria on salt-pack cured hides Type de document : texte imprimé Auteurs : Emel Aslan, Auteur ; Meral Birbir, Auteur Année de publication : 2012 Article en page(s) : p. 106-115 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bactéries -- Identification
Bactéries à gram négatif
Cuirs et peaux -- Conservation
Cuirs et peaux -- SéchageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Salt-pack curing is the most widely used method to preserve hides. However, inadequately applied salt-pack curing method supports the growth of proteolytic and lipolytic bacterial and archaeal flora which may reduce the quality of leather. Therefore, to examine the efficacy of salt-pack curing method applied to hides and to determine harmful microorganisms of the hides, Gram-negative bacteria on the salt-pack cured hides were isolated and identified and their proteolytic and lipolytic activities were investigated in the present study. Salt-pack cured hides examined were collected from different tanneries in Leather Organized Tannery Region, Tuzla-Istanbul, Turkey and 40% of the hides were imported from abroad. A total of 256 Gram-negative bacterial isolates containing 21 different genera (Acinetobacter, Aeromonas, Alcaligenes, Burkholderia, Citrobacter, Comamonas, Edwardsiella, Enterobacter, Escherichia, Hafnia, Klebsiella, Mannheimia, Pasteurella, Proteus, Pseudomonas, Salmonella, Serratia, Sphingomonas, Stenotrophomonas, Vibrio and Yersinia) and 46 different bacterial species were isolated and identified from the hide samples. The percentage of proteolytic, lipolytic and both proteolytic and lipolytic Gram-negative isolates on the hides were found as 68%, 52% and 43%, respectively. The most common Gram-negative genera on the salt-pack cured hides were Enterobacter (66), Pseudomonas (59) and Vibrio (32). These isolates showed both proteolytic and lipolytic activities in the highest number on the hides. As a conclusion, the hides contained a wide variety of destructive Gram-negative bacterial species originating from different environmental sources and traditional salt-pack curing method was not sufficient to inactivate these Gram-negative bacteria. Note de contenu : - EXPERIMENTAL : Isolation and identification of species in the family of enterobacteriacecae - Isolation and identification of pseudomonas species - Determination of protease activity - Determination of lipase activity
- RESULTS AND DISCUSSION : TABLE I : Frequencies of various species of gram-negative bacteria isolated from the salt-pack cured hides - TABLE II : Total numbers of proteolytic, lipolytic, both proteolytic and lipolytic genera of gram-negative bacteria isolated from the salt-pack cured hides - TABLE III : The percentages of proteolytic, lipolytic, both proteolytic and lipolytic genera of gram-negative bacteria isolated from the salt-pack cured hidesEn ligne : https://drive.google.com/file/d/1LBT9am2MJIGMepWw-yHE11h7jK-NhCNK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14684
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 4 (04/2012) . - p. 106-115[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13874 - Périodique Bibliothèque principale Documentaires Disponible Examination of gram positive bacteria on salt-pack cured hides / Emel Aslan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 12 (12/2011)
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PermalinkExamination of haloversatile bacteria on salted goatskin and inactivation of haloversatile bacteria via direct electric current / S. Kose in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 4 (04/2024)
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PermalinkExamination of moderately halophilic bacteria / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 5 (09-10/2021)
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PermalinkExamination of multidrug-resistant enterobacteriaceae isolated from salted cattle hides and sheep skins / Meral Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 9 (09/2016)
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PermalinkExamination of salt quality of Sereflikochisar lake used in the turkish leather industry / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 3 (05-06/2002)
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PermalinkExamination of the collagen from normal and vertical fibre hides / John A. M. Ramshaw in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXX (Année 1985)
PermalinkExamination of the fungal community on salt used in Turkish leather industry / Oguz Ozyaral in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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PermalinkUn exemple d'automatisation des opérations de tannage / R. Guillard in TECHNICUIR, (Années 1969-1970)
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PermalinkLes exosquelettes sont-ils adaptés aux métiers du cuir ? / Jérôme Darragon in CTC ENTREPRISES, (02-03/2022)
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PermalinkExpanding the performance range of lubricating syntan technology / J. J. Hodder in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 9 (09/1991)
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PermalinkPermalinkExpériences avec le développement de la technologie sur la fabrication du box de qualité à partir des peaux des veaux nourris artificiellement / V. Pektor in REVUE TECHNIQUE DES INDUSTRIES DU CUIR, Vol. LXIV (Année 1972)
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PermalinkExperimental evaluation of the microwave drying of leather / D. Skansi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 79, N° 6 (11-12/1995)
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PermalinkExperimental studies in restoration and conservation of historical leather / Z. Bajza in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 1 (01-02/2004)
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PermalinkExperimental study of emulsion liquid membrane separation of Cr (VI) using trioctylamine as the carrier / Ding Shaolan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 4 (07-08/2004)
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