Preparation of Soy Protein Isolate-nanocellulose Hydrophobic Composite Films and its Application in Convenient Food Seasoning Packets
In order to enhance the applicability of protein films,soy protein isolate was used as film-forming material.Modification was car-ried out by adding nanocellulose and stearic acid.The optimal preparation conditions for the soybean protein-nanocellulose composite mem-brane were obtained through single-factor and response surface experimental methods.The results showed that the highest comprehensive performance score was achieved with the addition of 6.0％nanocellulose,26％glycerol,and 5.0％stearic acid.Through scanning electron microscopy,it can be seen that the surface of the composite film is smoother and the internal network structure is denser.The experiment on the storage of convenient food seasoning prepared by composite films seasoning bag showed that after 120 days of storage,the water content,acid value and peroxide value of soybean oil in seasoning powder and dried vegetables increased slowly,and all met the requirements of na-tional standards.The research results can provide a theoretical basis for the industrial production and application of soybean protein mem-branes.
soy protein isolatenanocellulosecomposite filmsseasoning packageapplication
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