Physicochemical properties of collagen isolated from calf limed splits / Guoxing Li in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 6 (06/2003)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 6 (06/2003) . - p. 224-229 Titre : Physicochemical properties of collagen isolated from calf limed splits Type de document : texte imprimé Auteurs : Guoxing Li, Auteur ; Fumio Nakamura, Auteur ; Kazuaki Takenouchi, Auteur ; Shigeharu Fukunaga, Auteur Année de publication : 2003 Article en page(s) : p. 224-229 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Samples of collagen extracted from calf limed splits by three different methods (acetic acid, pepsin, and alkali treatments) were characterized with respect to their thermal stability, subunit composition, and morphology of fibril network. Differential scanning calorimetry showed that the denaturation temperature of pepsin-treated collagen was very similar to that of commercial type I collagen but much higher than those of acetic acid-treated collagen and alkali-treated collagen. Analysis by sodium dodecyl sulphate-polyacrylamide gel electrophoresis and Western blotting revealed that the subunit composition in collagen solution samples appeared to be major type I collagen and minor type III collagen. Scanning electron microscopy showed that acetic acid-treated collagen had a porous fibrillar network structure, while pepsin-treated collagen and alkali-treated collagen had membranous networks resembling that of commercial type I collagen. En ligne : https://drive.google.com/file/d/1YPgwRFcvcyJxXyujPauXtD8w83jXMoyz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4140 [article]

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Ultrasonic removal of organic pollutants in tannery wastewater / Bi Shi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVII, N° 3 (03/2002)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVII, N° 3 (03/2002) . - p. 98-101 Titre : Ultrasonic removal of organic pollutants in tannery wastewater Type de document : texte imprimé Auteurs : Bi Shi, Auteur ; Xinghai Gao, Auteur ; Zhongbing Lu, Auteur ; Youjie He, Auteur ; Guoxing Li, Auteur Année de publication : 2002 Article en page(s) : p. 98-101 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The effect of ultrasonic treatment on flocculating settling of tannery effluent, the reduction of COD in particular, was studied. The influence of the irradiation method, the duration of ultrasound and offer, and the prescription of coagulants on the efficiency of minimizing organic chemicals in wastewater were investigated. The results show that: (1) when waste water is treated only by ultrasound for 60 seconds, the removal rate of COD is 40.6%; (2) when total concentration of coagulants is increased to 100 mg/l, the greatest reduction of COD is achieved; (3) when wastewater is first treated with ultrasound for 60 seconds and then flocculated by coagulants, the reduction of COD is 10 - 37% higher than the controls without ultrasound. Thus, treatment of tannery wastewater with flocculating-settling technology can be effectively improved by ultrasound. En ligne : https://drive.google.com/file/d/13Tuy7K7WcmYAJ0GOWsnRSYeML-Vzev5G/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4314 [article]

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