Nanocomposites films obtained from protein isolates of mechanically deboned chicken meat added with montmorillonite

Menezes, Bruna da Silva; Cortez-Vega, William Renzo; Prentice, Carlos

doi:10.1590/0104-1428.2253

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Original Article • Polímeros 27 (1) • Jan-Mar 2017 • https://doi.org/10.1590/0104-1428.2253 copy

Nanocomposites films obtained from protein isolates of mechanically deboned chicken meat added with montmorillonite

Authorship SCIMAGO INSTITUTIONS RANKINGS

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.

Keywords:
by-product; chicken; protein isolate; film

Real variables	Coded variables
	-1.68	-1	0	1	1.68
CPI (g)^* * CPI: Chicken protein isolate of MDCM; MMT: Montmorillonite.	1.0	2.0	3.5	5.0	6.0
Glycerol (g)^* * CPI: Chicken protein isolate of MDCM; MMT: Montmorillonite.	0.2	0.5	1.0	1.5	1.8
MMT (g)^* * CPI: Chicken protein isolate of MDCM; MMT: Montmorillonite.	0.2	0.3	0.5	0.7	0.8

	Amount of filmogenic solution (g)	Thickness (mm)
	14.5	0.18 ± 0.11
	15.0	0.19 ± 0.07
	15.5	0.20 ± 0.10
	16.0	0.21 ± 0.08
	17.0	0.22 ± 0.12
Mean	15.6	0.20 ± 0.09

Assay	CPI (g/100mL)	MMT (g/100mL)	Glycerol (g/100mL)	Tensile Strength ^* * Mean values of 3 repetitions expressed as mean ± standard deviation; (MPa)	Elongation to break ^* * Mean values of 3 repetitions expressed as mean ± standard deviation; (%)	Opacity ^* * Mean values of 3 repetitions expressed as mean ± standard deviation;	Solubility ^* * Mean values of 3 repetitions expressed as mean ± standard deviation; (%)	WVP ^* * Mean values of 3 repetitions expressed as mean ± standard deviation; (g.mm/m².d.kPa)
1	-1(2.0)	-1 (0.3)	-1 (0.5)	8.6 ± 0.11	41 ± 0.06	13.7 ± 0.32	46.5 ± 0.74	1.74 ± 0.68
2	+1 (5.0)	-1 (0.3)	-1 (0.5)	8.6 ± 0.15	44 ± 0.11	18.6 ± 0.53	39.7 ± 0.60	1.23 ± 0.18
3	-1 (2.0)	-1 (0.3)	+1 (1.5)	7.6 ± 0.20	26 ± 0.16	13.1 ± 0.52	53.1 ± 0.54	1.21± 0.01
4	+1 (5.0)	-1 (0.3)	+1 (1.5)	7.6 ± 0.13	29 ± 0.13	16.0 ± 0.18	53.6 ± 0.25	1.30 ± 0.15
5	-1 (2.0)	+1 (0.7)	-1 (0.5)	7.5 ± 0.18	36 ±0.17	14.8 ± 0.82	38.5 ± 0.09	1.23 ± 0.40
6	+1 (5.0)	+1 (0.7)	-1 (0.5)	6.7 ± 0.23	66 ± 0.22	35.7 ± 0.07	71.8 ± 0.34	1.64 ± 0.01
7	-1 (2.0)	+1 (0.7)	+1 (1.5)	6.8 ± 0.26	28 ± 0.04	15.3 ± 1.06	48.4 ± 0.05	2.83 ± 0.11
8	+1 (5.0)	+1 (0.7)	+1 (1.5)	8.4 ± 0.11	36 ± 0.12	16.5 ± 0.49	54.0 ± 0.24	1.04 ± 0.25
9	-1.68 (1.0)	0 (0.5)	0 (1.0)	8.4 ± 0.22	44 ± 0.05	15.2 ± 0.50	81.8 ± 0.78	2.01 ± 0.31
10	+1.68 (6.0)	0 (0.5)	0 (1.0)	7.4 ± 0.24	46 ± 0.13	20.0 ± 0.36	46.5 ± 0.09	1.51 ± 0.09
11	0 (3.5)	0 (0.5)	-1.68 (0.2)	7.9 ±0.19	56 ± 0.16	17.6 ± 0.83	38.6 ± 0.13	1.33 ± 0.09
12	0 (3.5)	0 (0.5)	+1.68 (1.8)	7.0 ± 0.13	35 ± 0.26	14.7 ± 0.41	43.6 ± 0.22	1.74 ± 0.44
13	0 (3.5)	-1.68 (0.2)	0 (1.0)	9.1 ± 0.12	52 ± 0.11	13.5 ± 0.59	42.2 ± 0.20	1.00 ± 0.01
14	0 (3.5)	+1.68 (0.8)	0 (1.0)	8.9 ± 0.11	40 ± 0.10	17.8 ± 0.89	40.7 ± 1.10	1.76 ± 0.33
15	0 (3.5)	0 (0.5)	0 (1.0)	7.8 ± 0.22	39 ± 0.05	14.7 ± 0.59	40.9 ± 0.37	1.09 ± 0.03
16	0 (3.5)	0 (0.5)	0 (1.0)	8.0 ± 0.02	39 ± 0.01	16.5 ± 0.29	45.7 ± 0.06	1.08 ± 0.01
17	0 (3.5)	0 (0.5)	0 (1.0)	8.0 ± 0.09	39 ± 0.07	16.0 ± 0.33	45.8 ± 0.26	1.07 ± 0.03

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[1] * carlos.prentice@gmail.com