Table 5.

Regression model of the studied parameters of the pectin based edible film.

S. No	Response	Regression model	R2
1	Tensile strength	$5.96+0.35x_1-0.85x_2-0.005x_1{x}_2-0.92x_1^2+0.132x_2^2$	0.983
2	Elastic modulus	$647.73+22.17x_1-19.68x_2$	0.981
3	Elongation at break	$29.11+1.28{\mathrm{X}}_1+0.37{\mathrm{X}}_2-1.58{\mathrm{X}}_1{\mathrm{X}}_2-2.81{\mathrm{X}}_1^2-0.4{\mathrm{X}}_2^2$	0.985
4	Opacity	$12.55+1.96{\mathrm{X}}_1+2.05{\mathrm{X}}_2+0.17{\mathrm{X}}_1{\mathrm{X}}_2-1.31{\mathrm{X}}_1^2-0.69{\mathrm{X}}_2^2$	0.980

X₁ = Pectin concentration (g), X₂ = Glycerol concentration (%).