title: Chitosan-whey protein edible films produced in the absence or presence of transglutaminase: analysis of their mechanical and barrier properties.
abstract: Chitosan-whey protein edible films with different protein concentrations were prepared in the absence or presence of microbial transglutaminase as cross-linking agent. The films prepared in the presence of the enzyme showed low solubility at a wide range of pH, a lower degree of swelling, and good biodegradability following protease treatments. The presence of transglutaminase induced also an enhancement in film mechanical resistance and a reduction in their deformability. Finally, the barrier efficiency toward oxygen and carbon dioxide was found to be markedly improved in the cross-linked films which showed also a lower permeability to water vapor. Some potential practical applications of transglutaminase-treated chitosan-whey protein films are suggested.
authors.affiliation: Dipartimento di Scienza degli Alimenti, Universita' di Napoli Federico II, Parco Gussone 80055, Portici, Naples, Italy.
authors.forename: Prospero
authors.initials: P
authors.lastname: Di Pierro
authors.forename: Belkis
authors.initials: B
authors.lastname: Chico
authors.forename: Reynaldo
authors.initials: R
authors.lastname: Villalonga
authors.forename: Loredana
authors.initials: L
authors.lastname: Mariniello
authors.forename: Angelo E
authors.initials: AE
authors.lastname: Damiao
authors.forename: Paolo
authors.initials: P
authors.lastname: Masi
authors.forename: Raffaele
authors.initials: R
authors.lastname: Porta
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry; D001673:Biodegradation, Environmental; D002245:Carbon Dioxide; D048271:Chitosan / Q000737:chemistry*; D004591:Electrophoresis, Polyacrylamide Gel; D005502:Food; D006863:Hydrogen-Ion Concentration; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008894:Milk Proteins / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D013314:Stress, Mechanical; D011503:Transglutaminases / Q000737:chemistry*; D000067816:Whey Proteins
chemical_list: D001672:Biocompatible Materials; D046911:Macromolecular Substances; D008894:Milk Proteins; D000067816:Whey Proteins; D002245:Carbon Dioxide; D048271:Chitosan; D011503:Transglutaminases; D010100:Oxygen