Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6405916 | LWT - Food Science and Technology | 2011 | 6 Pages |
Abstract
Edible films based on high molecular weight chitosan (CH) and methylcellulose (MC) were obtained by mixing different ratios (0:1, 0.5:1.5, 1.0:1.0, 1.5:0.5 and 1:0) of the biopolymers in two solvent conditions (0.95 and 6.85Â mmol of ions per g polymer). In order to characterize the dry films, water sorption isotherms, water vapour permeability and film microstructure were evaluated. Water vapour permeability of CH-MC composite films was significantly affected by both the CH-MC ratio and the ionic concentration in the matrix. This can be attributed to the influence of ions on polymer chain packaging during the film formation and their role in the water uptake capacity of the films which affects the water transport properties.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Food Science
Authors
MarÃa Vargas, Ana Albors, Amparo Chiralt, Chelo González-MartÃnez,