title: Characterization of films made with chayote tuber and potato starches blending with cellulose nanoparticles.
abstract: The aim of this study was to characterize chayotextle starch films reinforced with cellulose (C) and cellulose nanoparticle (CN) (at concentrations of 0.3%, 0.5%, 0.8% and 1.2%), using thermal, mechanical, physicochemical, permeability, and water solubility tests. C was acid-treated to obtain CN. The films were prepared by casting; potato starch and C were used as the control. The solubility of the starch films decreased with the addition of C and CN compared with its respective film without C and CN. No statistical difference (α=0.05) was found in the films added with different concentrations of C and CN. In general, the mechanical properties were improved with the addition of C and CN, and higher values of tensile strength and elastic modulus were determined in the films reinforced with CN. The melting temperature and enthalpy increased with the addition of C and CN, and the values of both thermal parameters were higher in the films with CN than with C; the enthalpy value of the film decreased when the concentration of C or CN increased in the composite. Low concentration of C and CN is better distributed in the matrix film. The addition of C and CN in the starch films improved some mechanical, barrier, and functional properties.
authors.affiliation: Centro de Investigación en Ciencia y Tecnología de Alimentos, Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Av. Universidad Km 1, Rancho Universitario, C.P., 43600 Tulancingo, Hidalgo, Mexico.
authors.forename: Selene
authors.initials: S
authors.lastname: Aila-Suárez
authors.forename: Heidi M
authors.initials: HM
authors.lastname: Palma-Rodríguez
authors.forename: Adriana I
authors.initials: AI
authors.lastname: Rodríguez-Hernández
authors.forename: Juan P
authors.initials: JP
authors.lastname: Hernández-Uribe
authors.forename: Luis A
authors.initials: LA
authors.lastname: Bello-Pérez
authors.forename: Apolonio
authors.initials: A
authors.lastname: Vargas-Torres
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D019662:Cucurbitaceae / Q000737:chemistry*; D055595:Mechanical Phenomena; D053758:Nanoparticles / Q000737:chemistry*; D010539:Permeability; D035281:Plant Tubers / Q000737:chemistry*; D011198:Solanum tuberosum / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D014835:Volatilization; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D002482:Cellulose; D013213:Starch
keywords: Casting films; Cellulose nanoparticle (CN); Chayotextle starch (CS); Mechanical test; Thermal properties