Titre : |
Effect of ionic liquids pretreatment on the extraction of collagen from calf skin |
Type de document : |
texte imprimé |
Auteurs : |
Sicong Liu, Auteur ; Wentao Liu, Auteur ; Li Guoying, Auteur |
Année de publication : |
2019 |
Article en page(s) : |
p. 391-399 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Catégories : |
Chimie analytique Collagène Cuirs et peaux de veaux Extraction (chimie) Liquides ioniques
|
Index. décimale : |
675 Technologie du cuir et de la fourrure |
Résumé : |
The use of ionic liquids (ILs) for collagen extraction should be premised of not destroying the triple helix structure of collagen. Herein, the effects of pretreatments by two imidazolium based ILs with different anions, 1-ethyl-methylimidazolium dicyanamide ([EMIM][N(CN)2]) and 1-ethyl-methylimidazolium tetrafluoroborate ([EMIM][BF4]), on the extraction of collagen from calf skins were studied. The dependences of ILs pretreatments on ILs species and concentrations (30%, 50%, and 70% (w/w)) were examined, in terms of the fiber morphology of skins as well as the extraction rate, structural integrity, thermal stability, and aggregation behaviors of collagens. The results of histological analysis and scanning electron microscopy showed that the skin fibers were effectively loosened by the IL s pretreatments. The extraction rate of collagen was improved as the increase of ILs concentration and polarity with the highest value of 28.79%. Moreover, sodium dodecyl sulphatepolyacrylamide gel electrophoresis and Fourier transform infrared spectroscopy confirmed that the structural integrity of collagen was maintained after ILs pretreatments, although the thermal stability of collagen was determined to be slightly decreased by ultra-sensitive differential scanning calorimeter. Finally, pyrene fluorescence analysis and atomic force microscope indicated that the aggregation behavior of collagen was weakened when increasing the ILs concentration and polarity. The green ILs pretreatment of calf skins might be used as an effective approach for the extraction of bioactive collagen with improved yield and purity. |
Note de contenu : |
- EXPERIMENTAL : Materials - Ionic liquids pretreatment on NS - Histological analysis - SEM - Extraction of collagen - Extraction rate of collagen - SDS-PAGE - FTIR - Thermal analysis - Fluorescence measurements - AFM
- RESULTS AND DISCUSSION : Effect of ILs on calf skin - Extraction rate anaysis - Structural integrity of collagen - Thermal stability of collagen - Aggregation behavior of collagen |
En ligne : |
https://drive.google.com/file/d/1IYTryFmWwzS6xJRTho0fxBzDFkzmgrxa/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33035 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 10 (10/2019) . - p. 391-399