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675.2 : Préparation du cuir naturel. Tannage |
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Bio-oxidation of oil tanned leathers / K. Balajyothi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 5 (09-10/2008)
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Titre : Bio-oxidation of oil tanned leathers Type de document : texte imprimé Auteurs : K. Balajyothi, Auteur ; Victor John Sundar, Auteur ; A. Gnanamani, Auteur ; Chellappa Muralidharan, Auteur Année de publication : 2008 Article en page(s) : p. 210-213 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chamoisage Le chamoisage est une technique artisanale qui consiste à fabriquer un type de cuir très souple et de grande qualité, utilisé notamment dans la ganterie. L'atelier où se pratique cette activité est appelé une "chamoiserie", tandis que l'artisan dont c'est la spécialité est un "chamoiseur".
Ce cuir était autrefois fabriqué à partir de peaux de chamois (d'où l'origine du mois "chamoisage") traitées avec de l'huile de poisson, ce qui en faisait un produit rare et cher. Les artisans essayaient donc de fabriquer des cuirs aux qualités approchantes en utilisant la peau d'animaux d'élevage, un tel cuir est alors appelé "peau chamoisée".
Le chamoisage est désormais pratiqué sur les mêmes types de peaux que celles utilisées en mégisserie (agneau, chèvre, vachette, mouton…). Il met en œuvre les mêmes opérations que la mégisserie jusqu'à l'étape de "gonflement". Les peaux sont alors étendues et enduites avec de l'huile de poisson, puis frappées avec un fouloir pour faire pénétrer l'huile. Durant cette étape on expose régulièrement les peaux à l'air (on les "évente"), tout en ajoutant de l'huile.
La dernière opération du chamoisage est le "remaillage" qui consiste à faire "cotonner" la peau en arrachant sa "fleur" avec un couteau qui ne tranche pas.
Un sous-produit du chamoisage, le "dégras", est très recherché par les corroyeurs pour apprêter leurs cuirs.
Il existe une norme française AFNOR qui s'applique aux peaux chamoisées : NF G59-001 de janvier 1981, Cuirs et peaux - Peaux chamoisées - Présentation, dimensions et marquage.
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés organoleptiques
Enzymes microbiennes
Humidité -- Absorption:Eau -- Absorption
Oxydation biologique
Oxydation enzymatiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Conventional methods of chamois production suffer from the long process time and the possibility of inconsistent result. A novel approach has been made to reduce the oxidation time for oil tanned leathers from 10 days to about an hour using enzyme as the oxidizing agent. Organoleptic assessment and analysis in comparison with conventional leathers, supports the viability of the system. Note de contenu : - Experimental methods : Materials and methods - Assay for polyphenol oxidase
- Processing of chamois leather - conventional method
- Trials with enzymatic oxidation of oil treated leathers
- Results and discussion
- Conclusion
- Appendix : Identification of bacterial strain - Extraction of polyphenol oxidase from streptomyces sp. SS07
- Table 1 : Duration of oxidation and drying
- Table 2 : Organoleptic properties of leathers
- Table 3 : Water absorption characteristics of leathers
- Table 4 : Strength characteristics of leathers
- Fig. 1 : Scanning Electron Micrographs (x500) of cross section of chamois leathers. Top : Control leather ; bottom experimental leatherPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35253
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 5 (09-10/2008) . - p. 210-213[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21781 - Périodique Bibliothèque principale Documentaires Disponible Bio-technology for improved product quality / Claire Shrewsbury in WORLD LEATHER, Vol. 15, N° 1 (02-03/2002)
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Titre : Bio-technology for improved product quality Type de document : texte imprimé Auteurs : Claire Shrewsbury, Auteur Année de publication : 2002 Article en page(s) : p. 40-42 Langues : Anglais (eng) Catégories : Analyse de la valeur
Biotechnologie
Coût-Efficacité
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eaux usées -- Analyse
Epilage enzymatiqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : WJ & W Lang Ltd produces wet blue hides for the manufacture of leathers for the automotive, aeronotic and furniture upholstery markets world wide. The compagny employs some 65 people and as annual turnover of approximately £18 million. The tannery is certified to both ISO 9000 and ISO 14001. Since 1965, WJ & W Lang has been part of Scottish Tanning Industries - a group that includes three tanneries and two finishing units. Note de contenu : - Enzyme use within the hair saving process
- Quality and process benefits
- Environmental benefits
- Cost analysis
- Fig. 1 : Typical eeffluent composition arising from traditional and enzyme unhairing processes.
- Fig. 2 : Annual running cost comparaison for traditionnal and anzyme-based processes
- Fig. 3 : Cost analysisEn ligne : https://drive.google.com/file/d/1llAb8X4wR38W32MUl0RUPHTrV_OjPiAQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32194
in WORLD LEATHER > Vol. 15, N° 1 (02-03/2002) . - p. 40-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006176 - Périodique Bibliothèque principale Documentaires Disponible Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast / Patrizia Jankovic in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)
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Titre : Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast Type de document : texte imprimé Auteurs : Patrizia Jankovic, Auteur ; Reno Spinosi, Auteur ; Anna Bacardit, Auteur Année de publication : 2020 Article en page(s) : p. 413-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bioaccumulation
Biosorbant
Chrome trivalent
Eaux usées -- Décontamination
Eaux usées -- Epuration
Levure (Agent de fermentation)
Métaux lourds
MicroorganismesIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : With many industries discharging heavy metals into natural water resources, heavy metals have been found to accumulate in various living organisms which can ultimately threaten human life and pose a big threat to the environment. Thus, in the pursuit of a solution to the above mentioned problem, bioaccumulation has emerged as an interesting option for the removal of heavy metals from wastewater. In this paper, the effectiveness of the yeast Saccharomyces cerevisiae in the bioaccumulation of Cr3+ has been tested. Also, different factors influencing Cr3+ uptake have been discussed. This work has demonstrated that Saccharomyces cerevisiae is an effective Cr3+ biosorbent for tannery wastewater. The conditions of use of this yeast to achieve optimal chromium (III) absorption are: i) when a growth of the biosorbent equivalent to a similar concentration of Cr3+ is obtained, which contains the residual water that needs to be treated; ii) the smaller the biosorbent is the better the biosorption; iii) the uptake of Cr3+ is more efficient when no extra growth medium is added to the wastewater; iv) the longer the exposure period of the yeast to Cr3+ , the bigger the Cr3+ reduction. Since Saccharomyces cerevisiae is an inexpensive, readily available source of biomass, this discovery could be of great use for a low-budget and efficient wastewater treatment system Note de contenu : - EXPERIMENTAL : Microorganisms and growth conditions - Preparation of the chromium standard solution - Cr3+ uptake experiments with nonadapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent doses - Cr3+ uptake experiments with different compsitions of growth medium - Cr3+ uptake experiments with different contact times
- RESULTS AND DISCUSSION : Cr3+ uptake experiments with non-adapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent dose - Cr3+ uptake experiments with different composition of growth medium - Cr3+ uptake experiments with different contact timeDOI : https://doi.org/10.34314/jalca.v115i11.4182 En ligne : https://drive.google.com/file/d/1ZllTv5MXrGBIp_6pO0wDqha4Dm8D18LF/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34848
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 11 (11/2020) . - p. 413-417[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22419 - Périodique Bibliothèque principale Documentaires Disponible Biodegradation by filamentous fungi of vegetable tannins used in the tanning industry / Franciela Spier in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)
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Titre : Biodegradation by filamentous fungi of vegetable tannins used in the tanning industry Type de document : texte imprimé Auteurs : Franciela Spier, Auteur ; Mariliz Gutterres, Auteur Année de publication : 2018 Article en page(s) : p. 59-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants
Aspergillus
Biodégradation
Champignons microscopiques
Pénicilliums
Tanins végétaux
Tannage -- DéchetsIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Tannery waste is complex and may, in some cases, be toxic to plants, animals and micro-organisms. This study aimed to evaluate the biodegradability of vegetable tannins used in the tanning industry by filamentous fungi. We evaluated the influence of the concentration of tannin, the forms of culture and the type of tannin used in the cultivation of Aspergillus niger. No differences were observed between the concentrations and the forms of cultivation. However, the type of tannin used influenced the consumption reaching 15% for a condensed tannin and only 7% for the hydrolysable. The results of the tests carried out proved the fungistatic action of the phenolic compounds present in the tannins on Aspergillus niger. With the new fungal strains, the fungi named Pe G8 showed to be more efficient in the biodegradation of tannins reaching 97.3% of the consumption of acacia tannin. The expressive results obtained from the consumption of acacia condensed tannin by the fungi of the genus Penicillium have demonstrated that the biodegradation of condensed tannins by filamentous fungi may be the promising alternative treatment with the potential to minimise tannery waste. Note de contenu : - Micro-organism
- Submerged culture fermentation
- Solid state fermentation
- Analytical methodsEn ligne : https://drive.google.com/file/d/1QyZZtsfJf-3bYaJfRcGi1z2TqH2YxIjK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30557
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 2 (03-04/2018) . - p. 59-63[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19867 - Périodique Bibliothèque principale Documentaires Disponible Biodegradation of valonia tannin by endomyces shq 14 / Weng Huan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 1 (01-02/2005)
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Titre : Biodegradation of valonia tannin by endomyces shq 14 Type de document : texte imprimé Auteurs : Weng Huan, Auteur ; Bi Shi, Auteur ; Jinren Ni, Auteur ; A.G.L. Borthwick, Auteur Année de publication : 2005 Article en page(s) : p. 28-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biodégradation
Biodégradation -- Analyse
Champignons microscopiques
Tanins végétaux
Valonia et constituantsValonia est un genre d'algues vertes de la famille des Valoniaceae. La taille d'une seule cellule pluri-nucléée peut atteindre 2 cm chez certaines espèces. (Wikipedia)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Certain factors influencing the biodegradation of valonia tannin, ellagitannin, by Endomyces SHQ14 are investigated. The degradation rate of valonia tannin and removal of chemical oxygen demand (COD) are both maximized in a medium containing 25g.l-1 valonia tannin by shaking the culture at 120 rpm and incubating it at 28°C and pH 4.5-5 for 8 days. Additional carbon sources, particularly sucrose, support the degradation of valonia tannin. Peptone is found to be the most suitable nitrogen source. It is verified that the proper ratio of carbon (sucrose) to nitrogen (sodium nitrate) for the degradation of valonia tannin is about 10:1. Four kinds of compounds that may affect the degradation process were selected for this study; namely, an inducer 2,2’-azinobis (3-ethylbenzothiazolin-6-sulfonic acid) (ABTS), an inhibitor, EDTA and two surfactants SDS (sodium dodecylbenzene sulphonate) and Tween-80 (Tw-80). Note: Tween-80 is polyoxyethylene sorbitan monooleate ester with an HLB value of 14 which is used as an emulsifier/surfactant. The biodegradation process is found to be stimulated by 0.3 x 10-3 M inducer ABTS and 0.2 g.l-1 surfactant Tween-80 and SDS, but is inhibited by EDTA. Note de contenu : - Medium
- Chemicals
- Extraction
- Microorganism
- Culture conditions
- Proximate analysis of extract
- Analysis of degradation of valonia tannin
- Table 1 : Proximate analysis of extractive
- Table 2 : Effect of inducer ABTS on COD removal and degradation of valonia tannin by Endomyces SHQ 14
- Table 3 : Effect of surfactants and inhibitor on COD removal and degradation of valonia by Endomyces SHQ 14En ligne : https://drive.google.com/file/d/1VCOpFrG90TSs0prfuOAvOv4qphz35CT0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39611
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 1 (01-02/2005) . - p. 28-33[article]Biodegradation of wet-white leather / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 3 (05-06/2011)
PermalinkBiomass-based tanning agent for sustainable leather manufacture via cyanuric chloride modified chitooligosaccharide / Min Jiang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 10 (10/2023)
PermalinkBiomass derived oligosaccharides for potential leather tanning / Zhicheng Jiang in COLLAGEN AND LEATHER, Vol. 5 (2023)
PermalinkPermalinkBiopolymers produced from gelatin and whey protein concentrate using polyphenols / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 3 (03/2014)
PermalinkBioremediation of tannery effluents and chromium containing wastes using cyanobacterial species / V. Shashirekha in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 11 (11/2005)
PermalinkBiosensor based toxicity dissection of tannery and associated environmental samples / Mwinyikione Mwinyihija in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 12 (12/2005)
PermalinkBiosorption of chromium from spent semi-chrome liquor : Part 1 - Effective pollution abatement using bacillus cerus / Saranya Kailasam in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 11 (11/2021)
PermalinkBiotechnology in the tanning industry / A. Simoncini in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
PermalinkCalorimetric and kinetic analysis of thermal behaviors of chrome-tanned collagen fibers using isoconversional and multivariate non-linear regression methods / Wentao Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 12 (12/2017)
PermalinkCanaigre, rumex hymenosepalus torr. a new viable process for the extraction of canaigre tannis / J. E. Flores Ruiz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXX (Année 1985)
PermalinkCarbon dioxide deliming - an environmentally friendly option for indian tanneries / H. Purushotham in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 77, N° 6 (11-12/1993)
PermalinkCarbon footprint and toxicity indicators of alternative chromium-free tanning in China / Xiaoying Xu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 5 (05/2015)
PermalinkCarbonization region measurement in vegetable tanned goat leather using machine vision system for evaluating performance measures of leather cut contour edges / S. Vasanth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)
PermalinkCarlos Riba Anto, dirigeant de la mégisserie Riba Guixà , ancré dans le futur / Juliette Sebille in LEATHER FASHION DESIGN (LFD), N° 1 (02/2019)
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