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Abstract
Films based on chitosan from giant squid (Dosidicus gigas) residual endoskeleton, starch from different low-value agroindustrial byproducts and glycerol were successfully obtained. Four starch sources and three different weight ratios (1/1, 2/1 and 5/1 of starch/chitosan) were used. Applying a statistical design of completely randomized blocks, the effect of starch source and weight ratio on the film properties were evaluated. The starch source did not affect any of the tested properties. However, film properties such as thickness, water solubility, water vapor permeability, elongation, and tensile strength revealed significant differences (p<0.01) related to the starch weight ratio in the films. A higher starch weight ratio led to lower water solubility; nevertheless, the higher starch weight ratio led to films with higher thickness, water vapor permeability and tensile strength.
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Details
1 Laboratory of Environmental Analysis, Universidad Nacional de Tumbes, Av. Universitaria s/n, Campus Universitario – Pampa Grande, Tumbes, Peru
2 Institute of Chemical Process Fundamentals of the CAS, v. v. i. Czech Republic
3 Faculty of Sciences, Universidad Nacional de Ingeniería, Av. Tupac Amaru 210, Lima 25, Peru
4 Departament of Chemistry, Universidad Nacional de Piura, Urb. Miraflores s/n – Campus Universitario, Piura, Peru
5 Faculty of Agricultural Sciences, Universidad Nacional de Trujillo, Av. Juan Pablo II s/n, Ciudad Universitaria, Trujillo, Peru