Optimizing soft leather production from back cut skins : Sustainable practices at ethiopian Nile crocodile farms / Gemechu Chala in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 8 (08/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 8 (08/2024) . - p. 331-338 Titre : Optimizing soft leather production from back cut skins : Sustainable practices at ethiopian Nile crocodile farms Type de document : texte imprimé Auteurs : Gemechu Chala, Auteur ; R. Karthikeyan, Auteur ; Tamrat Tesfaye, Auteur Année de publication : 2024 Article en page(s) : p. 331-338 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Crocodile du Nil Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux -- Propriétés physiques Essais (technologie) Souplesse (mécanique) Tannage au chrome Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This research addresses the significant challenges in converting back cut skins of Nile crocodiles (Crocodylus niloticus) into soft leather. The process is complicated by the skins’ inherent hardness and distinct texture. Sourced from the Arba Minch Crocodile Farm, these skins are aesthetically pleasing due to their unique scale patterns. However, they are often overlooked by leather manufacturers because of their rigidity and the complexities involved in processing. Our study proposes a critical modification in the pickling and chrome tanning process, specifically designed to improve fiber opening and separation. This method effectively transforms the durable back cut skins into flexible, soft leather, enhancing their applicability in various leather goods. Furthermore, the research encompasses an extensive evaluation of the raw materials, focusing on their fat and nitrogen composition. Advanced techniques, such as scanning electron microscopy analysis, along with visual examinations and physical tests, affirm the modified tanning process’s efficacy in producing soft leather from crocodile back cut skins. These findings underscore the potential of this refined approach not only to overcome processing challenges but also to expand the use of back cut skins in the leather industry. This research not only offers new opportunities for product diversification but also promotes sustainable practices at Ethiopian Nile Crocodile Farms, contributing to innovative and environmentally responsible leather production methods. Note de contenu : - EXPERIMENTAL : Materials - Determination of moisture content - Determination of fat content - Determination of protein content - Process details for conversion of back cut skins into soft crocodile leathers - Scanning electron microscopy of back cut crocodile leathers - Physical testing of leathers - Organoleptic properties - RESULTS AND DISCUSSION : Crocodile back cut skins : Moisture, nitrogen and fat content - Effect of tanning on the structural characteristics of back cut leather - Physical and organoleptic properties of tanned crocodile back cut leathers - Table 1 : Physical properties of back cut crocodile leathers DOI : https://doi.org/10.34314/bg0z6y08 En ligne : https://drive.google.com/file/d/1gFZkONhvqRRO_a1PzzyZ0he-Jjsv_7ym/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41286 [article]

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Study on the microstructure of crocodylus niloticus skins during leather making process / Qiang Tao-Tao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 3 (03/2019)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 3 (03/2019) . - p. 89-93 Titre : Study on the microstructure of crocodylus niloticus skins during leather making process Type de document : texte imprimé Auteurs : Qiang Tao-Tao, Auteur ; Han Mi-Mi, Auteur Année de publication : 2019 Article en page(s) : p. 89-93 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Crocodile du Nil Cuirs et peaux -- Analyse Microstructures -- Analyse Peau -- Histologie Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The variation on the microstructure of Crocodylus niloticus skins in the tanning process was observed and analyzed by using frozen section staining, which provide the reliable theoretical basis for Crocodylus niloticus leather production. The research on aldehyde fuchshin staining method showed that elastic fiber will receive a lot of damage in the bating and bleaching process. Through the observation of wet blue leather by scanning electron microscopy, the preparation work section and tanning process design are reasonable, also, inter-fibrillary substances had been well removed. The crosscut microstructure of Crocodylus niloticus hides before and after fatliquoring was observed by nile blue sulphate staining method, and the results showed that fatliquor could penetrate into the skin uniformly. Note de contenu : - EXPERIMENTAL : Materials - Instruments - Leather making process - Sampling - Observation on microstructure of preparation and tanning section - Optical light microscope observation - Scanning electron microscope observation - RESULTS AND DISCUSSION : The variation of histology at preparation stage - the variation of elastic fibers at preparation stage - The histology of blue wet skins of crocodylus niloticus - The variation of histology before and after fatliquoring En ligne : https://drive.google.com/file/d/1FihZhQIpgWbw6oZQ511GYr85HhhhegdC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31929 [article]

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Tanning technique of Crocodylus Niloticus bag leather / Qiang Taotao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 6 (11-12/2015)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 6 (11-12/2015) . - p. 273-279 Titre : Tanning technique of Crocodylus Niloticus bag leather Type de document : texte imprimé Auteurs : Qiang Taotao, Auteur ; Gao Xin, Auteur ; Chen Yuan, Auteur ; Wang Xianjun, Auteur ; Wang Xuechuan, Auteur Année de publication : 2015 Article en page(s) : p. 273-279 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Crocodile du Nil Cuirs et peaux -- Finition Cuirs et peaux de reptiles Maroquinerie Sacs à main Tannage au chrome Température de retrait Travail de rivière (cuir) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Based on the structural features of Crocodylus niloticus raw hides, the operation points and considerations of each process in beamhouse, tanning and finishing operations are discussed in detail. Methods like multi-step degreasing, strong liming, oxidation-reduction bleaching were used to solve the problems in Crocodyfus niloticus tanning, such as high fat content, cuticle cleaning, colour non-uniformity etc. The processing technology which can be applied to practical production of Crocodylus niloticus leather was devised. With the application of this technology, the finished leather was full, soft, and resilient, with high shrinkage temperature, uniform colour, meeting the regulrements for bag leather. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and apparatus - Observation of Crocodylus niloticus organizational structure - Determination of shrinkage temperature in the tanning process - Tanning procedure of Crocodylus niloticus belly leather - RESULTS AND DISCUSSION : Structural characteristics of Crocodylus niloticus belly raw hide - Tanning process of Crocodylus niloticus - Structure of chrome-tanned Crocodylus niloticus leather - The changes of Ts in tanning process En ligne : https://drive.google.com/file/d/1xcosjurZN3QUj1INZ8gWGT8lSFsF652j/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25098 [article]

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The microstructure of raw hides of crocodylus niloticus / Qiang Taotao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 4 (07-08/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 4 (07-08/2018) . - p. 169-173 Titre : The microstructure of raw hides of crocodylus niloticus Type de document : texte imprimé Auteurs : Qiang Taotao, Auteur ; Han Mimi, Auteur Année de publication : 2018 Article en page(s) : p. 169-173 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Crocodile du Nil Cuirs et peaux -- Analyse Matériaux -- Coloration Peau -- Anatomie et histologie Peaux brutes Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Crocodile leather with its unique pattern and scarcity is regarded as a leader in the high-grade leather products industry. In order to further improve the quality of crocodile leather products, based on the Crocodylus niloticus raw hides, the trichrome-udan IV staining method, aldehyde fuchshin staining method, scanning electron microscope and polarising microscope were used to study the histology characteristics and fibre weaving of the raw hides, which provides a theoretical basis for formulating tanning scientifically and reasonably. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and instruments - Sampling - Fixing - Sectioning - Trichrome-sudan IV staining method - Aldehyde-fuchsin staining method - Upright microscope observation - Scanning electron microscope observation - Polarising microscope observation - RESULTS AND DISCUSSION : Histology characteristics of the crocodylus niloticus raw hide - Fibre weave of crocodylus niloticus En ligne : https://drive.google.com/file/d/1wKh3pbbUsdy8-2cEGGBL6-rpQT8t-iAm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30898 [article]

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