Abstract
Abstract The aim of this study was to evaluate the properties of nanocomposite films of protein isolates from mechanically deboned chicken meat with organoclay (montmorillonite). For the film development, a 23 experimental design was performed with three levels, protein isolate (2, 3.5, 5 g.100 mL-1 of solution), montmorillonite (0.3, 0.5, 0.7 g.100mL-1 of solution) and glycerol (25, 30, 35 g.100 mL-1 CPI). The tensile strength varied between 6.7 and 9.1 MPa, elongation to break from 26-66%, opacity of 13.1 to 35.7 and solubility from 38.5% to 81.8%. Assessing the structural properties, interleaving of the isolate and montmorillonite can be noted. The results obtained in the experimental design indicate that 2.0 g of CPI.100 g-1 of solution, 0.8 g of MMT.100 g-1of solution and 0.2 g of glicerol.100 g-1CPI are the ideal parameters for preparing nanocomposite films.
Highlights
Concentrated and isolated proteins are produced in of approximately 1 nm in the planar structure, and a lateral large scale to serve as functional ingredients in a wide and dimension between 200 and 300 nm
The thickness was determined as the arithmetic average of five random measurements of the area of the film, it was found that with an increase in solids, thickness increased too, same behavior found by Brandelero et al.[12] who determined thicknesses of starch films in the same way and obtained a variation in thickness from 0.11 mm to 0.33 mm
Responses surfaces were obtained to evaluate the effect of independent variables, chicken protein isolate (CPI), montmorillonite (MMT) and glycerol (G) on the dependent variables
Summary
Concentrated and isolated proteins are produced in of approximately 1 nm in the planar structure, and a lateral large scale to serve as functional ingredients in a wide and dimension between 200 and 300 nm. The interest of maintaining or improving the quality of their mechanical, optical and barrier properties This advantage packaged goods and reducing the waste of packaging at the of adding low clay content, compared to the traditional same time has encouraged the exploration of new packaging composites, means the production of lighter components, materials such as biodegradable films formulated with raw a desirable factor in many applications. Another interesting materials derived from renewable resources[2]. The main reason for the differences in performance for developing films, because they are abundant, renewable, between composite and nanocomposite materials is related to cheap and capable of forming a continuous matrix[3].
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