Citas bibligráficas
Montenegro, M., (2020). Efecto del alcohol de polivinilo (PVOH) en las propiedades físico-mecánicas de biopelículas elaboradas con aislado proteico de Sacha Inchic [Universidad Nacional de San Martín. Fondo Editorial]. http://hdl.handle.net/11458/3854
Montenegro, M., Efecto del alcohol de polivinilo (PVOH) en las propiedades físico-mecánicas de biopelículas elaboradas con aislado proteico de Sacha Inchic []. PE: Universidad Nacional de San Martín. Fondo Editorial; 2020. http://hdl.handle.net/11458/3854
@misc{renati/1055389,
title = "Efecto del alcohol de polivinilo (PVOH) en las propiedades físico-mecánicas de biopelículas elaboradas con aislado proteico de Sacha Inchic",
author = "Montenegro Rojas, Mauricio Jefferson",
publisher = "Universidad Nacional de San Martín. Fondo Editorial",
year = "2020"
}
One of the problems of great environmental impact is the accumulation of solid waste resulting from food packaging, which has led to the search for natural and renewable biopolymers. The Sacha Inchic cake (Plukenetia volubilis), an agro-industrial by-product generated in the extraction of oil, is an alternative for the production of films because of its high protein content. Likewise, polyvinyl alcohol (PVOH) is able to form transparent films with adequate properties. The objective of this research was to study the effect of the addition of polyvinyl alcohol on the physical-mechanical properties of biofilms composed by Sacha Inchic's protein isolate. The biofilms were obtained by the casting method, to obtain constant thickness, 7% of macromolecules in the filmogenic solution were used. The determination of the mechanical properties was done with a Brookfield Model CT3 50k Texturometer. To evaluate the influence of PVOH addition, a complete randomized design with five treatments was proposed, being the independent variable the percentage of PVOH addition, in the levels, 0, 3, 6, 9, 12% w/w, performing the tests in triplicate. The result indicated that the thickness, as it was intended, was not influenced (P >0.05) by the addition of PVOH, besides the humidity, solubility and color. The higher the PVOH concentration, there was an increase in the elongation percentage (from 9,497 ± 0,777% to 27,063 ± 2,975%), drilling force (from 6,017 ± 0.764 N to 13,617 ± 1,199 N) and consequently lower Young's modulus (from 51,304 ± 12,693 N/mm2 to 15,799 ± 1,177 N/mm2). Films with higher PVOH content (12%) had better barrier properties (2,918 ± 9,281*10-12 g m-1 s-1 Pa-1).
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