Edible barrier coatings

Davis, D.J.L., and Gibbs, V. (1991). Edible moisture barrier coating. Patent GB2242815. 

Edible films/coatings Matrix for controlled release systems Super-absorbents Films, non woven tissues, etc. Barrier internal layers, surface coatings, active superficial layers Soluble sachets for instant dry/soft agrochemicals or additives formulations, etc. Slow release of fertilisers, agrochemicals, additives, etc. Material for plant planting in desert, etc. 

Conca, K. R. Yang, T. C. S. (1993). Edible food barrier coatings. In C. Ching, D. Kaplan, E. Thomas (Eds.), Biodegradable Polymers and Packaging (357-369). Technomic Publishing Lancaster, PA. 

Vlllalobos-Carvajal, R., Hernandez-Munoz, P., Albors, A. Chiralt, A. (2009). Barrier and optical properties of edible hydroxypropylmethylcellulose coatings containing surfactants applied to fresh cut carrot slices. Food Hydrocolloids, 23, 2, 526-535. 

Biodegradable films made from edible biopolymers from renewable sources could become an important factor in reducing the environmental impact of plastic waste. Proteins, lipids, and polysaccharides are the main biopolymers employed to make edible films and coatings. Which of these components are present in different proportions and determine the properties of the material, as a barrier to water vapor, oxygen, carbon dioxide, and lipid transfer in food systems (Gomez-Guillen et al. 2002 and 2009). 

Edible film and coating is defined as a thin, continuous layer of edible material used as a coating or as a film placed between food components to provide a barrier to mass transfer (Balasubramaniam et al., 1997 Guilbert et al., 1997). These films/coatings have the potential to replace conventional packaging in some applications. Starches such as potato starch, cellulose... 

Cardboard baking dishes coated with crystalline PET or crystalline PBT can be used in convection ovens up to temperatures of 200-220 °C. Single portion dishes made from heat formed films find wide applications in microwave ovens. Biaxially stretched PET covers an important application area of bottles, wide mouth jars and cans. These containers are particularly well suited for carbonated beverages, edible oils and spirits. The gas barrier properties can be improved by coextrusion with a barrier layer such as polyamide. With improved barrier properties it can also be used for beer and wine. 

Function Source of high-quality protein gelling agent water-binding aid foaming or whipping aid emulsifier edible coating used as a moisture barrier. 

The addition of nonlipid fillers or bulking agents to improve the functional properties of edible moisture barrier (viscosity, adherence on substrate) is more frequent in commercial and patented coatings/films than in scientific literature. Indeed, in commercial references the barriers are often tested on the product to protect. Formulations are thus developed to try to adjust the viscosity of the coating and its mechanical properties in order to obtain a good adherence and protection to the coated product. 

In addition, the coating has to resist to the conditions of storage and of preparation of the food product, for example, storage temperature, oven or microwave heating. Many ready-to-eat composite food products to which edible moisture barriers are... 

Barrier Performances of Edible Films and Coatings to Aroma Compounds.814... 

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