Development of a technology for polysaccharide-based film coating

This work describes the design of a film coating based on polysaccharides of bacterial and plant origin with several methods of application (by spraying, brushing and wrapping) on food. We used the bacterial polysaccharide xanthan as a thickener, the plant polysaccharide carboxymethyl cellulose (CMC) as a structurant, and the biological additive lecithin as a plasticizer. Depending on the film coating application method, concentrations of the studied polymers were selected with the same component composition. A technology for preparing the film coating was developed. The influence of heating (40, 50, 60, and 70 degrees C) on the solubility of polysaccharide solutions with several component ratios was studied; the temperature of 50 degrees C was chosen as resulted in a strong, stable, but not too viscous gel. The effect of concentration on the appearance and thickness of the film coatings was studied.