Optimization of mustard, soybean and flaxseed meal blend formulation for development of biopolymeric film and its characterization

Abstract

The current research work demonstrates the valorisation of oilseed meals by transforming them into biopolymeric films with tunable properties for stringent food packaging applications. The oilseed meals are obtained as waste materials after oil extraction having a large potential in the food industry. For the study, the biopolymeric films fabricated using defatted oilseed meals of mustard, flaxseed, and soybean each in range of (1–100%) using the mixture design. The films were developed using solvent casting method with the addition of a glycerol (75%) as plasticizer and soy lecithin (2%) as emulsifier. The effectiveness of the various proportions of the selected oilseed meals on water vapour permeability, water solubility, swelling property and tensile strength has been studied. The optimized films were obtained with the combination of 20.50% mustard seed meal, 67.15% flaxseed meal, and 12.33% soybean seed meal. The result obtained after investigation of selected responses were found as 32.09% solubility, 1.88 kPa tensile strength, elongation at break at 4.31%, and water vapour permeability with 0.68 g/Pa h m g. The thermal, morphological, and functional analysis results improved in the optimized biopolymeric films. The oilseed meals were found significant on the properties of the biopolymeric. The formulation obtained had improved mechanical as were as barrier properties of biopolymeric films.