Soy protein isolate reinforced yak skin collagen edible films for ultraviolet barring function / Ruirui Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 4 (07-08/2019) . - p. 173-179 Titre : Soy protein isolate reinforced yak skin collagen edible films for ultraviolet barring function Type de document : texte imprimé Auteurs : Ruirui Wang, Auteur ; Hongru Wang, Auteur ; Yijun Yao, Auteur ; Wanli Ji, Auteur Année de publication : 2019 Article en page(s) : p. 173-179 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Allongement à la rupture Caractérisation Collagène Couches minces -- Propriétés mécaniques Couches minces -- Propriétés optiques Couches minces -- Propriétés thermiques Cuir et peau de Yak Extraction (chimie) Hydrolyse Matériaux filmogènes Perméabilité Protection contre le rayonnement ultraviolet Protéines végétales Soja et constituants Vapeur d'eau Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, collagen extraction from yakskin was conducted through an acid-pepsin hydrolysis process. The molecular weight (MW) of yakskin collagen was 51825 Da. An amino acid analysis showed that yakskin collagen is rich in nutrients and contains essential amino acids. The effects of SPI on the mechanical properties (tensile strength (TS) and elongation at break (EAB)), light transmittance, water vapour permeability (WVP) levels, FTIR, X-ray diffraction (XRD) patterns, thermal properties, water contact angles and yakskin collagen-based films' cross section morphologies were studied. The results showed that excellent ultraviolet barring functions were achieved from edible films with the incorporation of SPI. The edible films produced by SPI present better properties than films composed of only yakskin collagen. Yakskin collagen/SPI composite film could be more widely used in edible food packaging film. As plasticiser, sorbitol can effectively replace glycerol. It opens up a new direction for the effective utilisation of yakskin resources in Qinghai province. The paper provides information specific to yakskin in contrast to other sources of collagen. Note de contenu : - INTRODUCTION : Skin structure - EXPERIMENTAL SECTION : Materials and chemicals - Extraction of yakskin collagen - Formation of edible film - Characterisation - RESULTS AND DISCUSSION : Amino acid composition of the yakskin collagen - FTIR ANALYSIS : Optical properties analysis - Mechanical proerties analysis - elongation at break/water vapour permeability - Contact angle (CA) analysis - Thermal performance analysis - X-ray diffraction (XRD) analysis - Scanning electron microscope (SEM) analysis En ligne : https://drive.google.com/file/d/1H-tbpEkxzn1zigcmxZojhP52PpzvHhu8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32797 [article]

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Structure and properties of a novel collagen-soy protein isolate film via self-assembly : a comparative study / Ruirui Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 1 (01-02/2020)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 1 (01-02/2020) . - p. 25-32 Titre : Structure and properties of a novel collagen-soy protein isolate film via self-assembly : a comparative study Type de document : texte imprimé Auteurs : Ruirui Wang, Auteur ; Hongru Wang, Auteur ; Liu Pengjie, Auteur ; Yijun Yao, Auteur ; Wanli Ji, Auteur Année de publication : 2020 Article en page(s) : p. 25-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène Couches minces Couches minces -- Propriétés mécaniques Couches minces -- Propriétés optiques Couches minces -- Propriétés thermiques Pansements Perméabilité Résistance à l'humidité:Résistance à l'eau Soja et constituants Systèmes auto-assemblés Vapeur d'eau Index. décimale : 610.72 Recherche médicale : classer la médecine expérimentale à 619 Résumé : A novel collagen-soy protein isolate (SPI) film formed via self-assembly was developed. This research investigated the structure and application properties of the collagen-SPI self-assembled film and the blend film. FTIR and XRD evaluation of structural properties indicated that the self-assembly method could effectively enhance the compatibility between collagen and SPI. The collagen-SPI self-assembled film presented a compact, smooth and continuous microstructure. The tensile strength (Ts) and elongation at break (EAB) values of the collagen-SPI self-assembled films (Ts : 13.991 ±0.53 MPa, EAB : 84.57 ± 6.21%) were nearly twice those of the blend films. The water vapour permeability (WVP) values of the collagen-SPI self-assembled film were more than 2000 g•m-2.24h. The maximum decomposition peak of collagen-SPI self-assembled films was located at 313.2°C. The collagen-SPI self-assembled films could achieve swelling equilibrium quickly within 2 hours, and the structural integrity of the film was maintained for 24 hours. The collagen-SPI self-assembled film had excellent ultraviolet shielding and visible light transmission qualities. The collagen-SPI self-assembled film had better mechanical properties, optical properties, thermal stability and water resistance properties as opposed to blend film. As a clean and feasible method, the self-assembly method could improve the functional properties of the collagen-SPI film. The collagen-SPI self-assembled films could be used as novel wound dressings in the future./ Note de contenu : - EXPERIMENTAL SECTIONS : Materials - Preparation of the collagen-SPI self-assembled film - Preparation of the collagen-SPI blend fim - Characterisation of the collagen-SPI films - RESULTS AND DISCUSSION : Microstructure of the collagen-SPI micelles formed via self-assembly - FTIR spectra of the collagen-SPI film - X-ray diffraction (XRD) of the collagen-SPI self-assembled film - Scanning electron microscopy (SEM) of the collagen-SPI film - Mechanical properties of the collagen-SPI film - Water vapour permeability (WVP) of the collagen-SPI film - Thermal stability of the collagen-SPI film - Optical properties of the collagen-SPI self-assembled film - Water resistance of the collagen-SPI film En ligne : https://drive.google.com/file/d/1Lcp-coMg2d9TLJASa1DefKNz4mUx3O8T/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33540 [article]

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