Interactions between aroma compounds and latex films: partition coefficients and influence on latex film formation

• Published in: Packaging technology & science Vol. 19; no. 2; pp. 71 - 82
• Main Authors: Nestorson, A., Leufvén, A., Järnström, L.
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01-03-2006; Wiley
• Subjects: active packaging; Applied sciences; aroma compounds; Biological and medical sciences; dispersion coating; Exact sciences and technology; Food Engineering; Food industries; Fundamental and applied biological sciences. Psychology; General aspects; Handling, storage, packaging, transport; latex; Livsmedelsteknik; Organic polymers; partition; Physicochemistry of polymers; Properties and characterization; Surface properties; dispersion coating; Butadiene copolymer; Adsorption capacity; Partition coefficient; Diene copolymer; partition; Plastic bag packaging; Model compound; Barrier material; Acrylate copolymer; Aroma; Liquid solid adsorption; Aliphatic compound; Use; Container content interaction; Film formation; Foodstuff; Experimental study; Latex; Terpene; Solubility parameter; aroma compounds; active packaging; Thermodynamic properties; Styrene copolymer
• ISSN: 0894-3214; 1099-1522; 1099-1522
• DOI: 10.1002/pts.710

The potential of various latex grades to take up, retain and release different types of aroma compound has been explored. The latex grades used included two styrene–acrylate latices and two styrene–butadiene latices, of which one contained talc. The aroma compounds used were ethyl butyrate, 1‐hexanol, heptanal, 3‐octanone, α‐pinene and limonene dissolved in propylene glycol. It was shown that talc improves both the uptake of aroma compounds in the dispersion phase and the retention during the film formation process. However, the styrene–acrylate latex had a greater ability than the styrene–butadiene latex to hold the aroma compounds once the films were formed. These results have been compared to calculated solubility parameters. The uptake of 1‐hexanol and propylene glycol in the latex dispersions were higher than expected from the theoretical calculations, probably because of the amphiphilic nature of these molecules. In addition, the influence of aroma compounds on the film formation was evaluated. Copyright © 2005 John Wiley & Sons, Ltd.