TY - JOUR
T1 - Composites of chitosan with acid-soluble collagen from jumbo squid (Dosidicus gigas) by-products
AU - Arias-Moscoso, Joe L.
AU - Soto-Valdez, Herlinda
AU - Plascencia-Jatomea, Maribel
AU - Vidal-Quintanar, Reyna Luz
AU - Rouzaud-Sández, Ofelia
AU - Ezquerra-Brauer, Josafat M.
PY - 2011/6
Y1 - 2011/6
N2 - Biodegradable films of chitosan with acid-soluble collagen (ASC) isolated from jumbo squid by-products were prepared using solution-mixing and film-casting techniques. The main goal of the study reported was to evaluate the potential application of ASC as an additive in the preparation of biofilms in composites with commercial chitosan (85% deacetylated, viscosity > 400 MPa s and molecular weight of 570.3 kDa). Thermal properties, scanning electron microscopy (SEM) images, mechanical properties, water vapor barrier properties and water solubility of the films obtained were assessed. SEM images revealed that the surface morphology of chitosan films was influenced by the ASC. The ASC led to a structure with a less compact morphology than chitosan films. The incorporation of ASC to chitosan induced an increase in the percentage of elongation at break and a decrease of the elastic modulus of films. However, the addition of ASC to chitosan films had a negative effect on the water barrier properties and increased the solubility. The glass transition temperature of chitosan films was found to be ca 159 °C and shifted to ca 148 °C for ASC/chitosan films containing 50% ASC. ASC from jumbo squid by-products might be useful as a new source of additive in the preparation of biofilms in composites with chitosan.
AB - Biodegradable films of chitosan with acid-soluble collagen (ASC) isolated from jumbo squid by-products were prepared using solution-mixing and film-casting techniques. The main goal of the study reported was to evaluate the potential application of ASC as an additive in the preparation of biofilms in composites with commercial chitosan (85% deacetylated, viscosity > 400 MPa s and molecular weight of 570.3 kDa). Thermal properties, scanning electron microscopy (SEM) images, mechanical properties, water vapor barrier properties and water solubility of the films obtained were assessed. SEM images revealed that the surface morphology of chitosan films was influenced by the ASC. The ASC led to a structure with a less compact morphology than chitosan films. The incorporation of ASC to chitosan induced an increase in the percentage of elongation at break and a decrease of the elastic modulus of films. However, the addition of ASC to chitosan films had a negative effect on the water barrier properties and increased the solubility. The glass transition temperature of chitosan films was found to be ca 159 °C and shifted to ca 148 °C for ASC/chitosan films containing 50% ASC. ASC from jumbo squid by-products might be useful as a new source of additive in the preparation of biofilms in composites with chitosan.
KW - By-products
KW - Chitosan
KW - Collagen
KW - Films
KW - Jumbo squid
UR - http://www.scopus.com/inward/record.url?scp=79956087815&partnerID=8YFLogxK
U2 - 10.1002/pi.3048
DO - 10.1002/pi.3048
M3 - Artículo
SN - 0959-8103
VL - 60
SP - 924
EP - 931
JO - Polymer International
JF - Polymer International
IS - 6
ER -