Whey Protein Isolate Base Coat for Egg Life Extension

摘要

The present invention relates to the use of whey protein isolate, montmorillonite, glycerol and sodium metabisulphite, for the preparation of biodegradable coating from natural and renewable sources, aiming at extending the shelf life of eggs sold in natura (in shell). ) stored at room temperature. Among the innovative features is the use of citric acid to adjust the coating ph to low values (3.2), which provides a coating with good mechanical characteristics and low water vapor permeability. Tests have shown that eggs coated with this solution had a shelf life greater than 40 days when stored at 25oC and 70% relative humidity.