Migration of antimicrobial agents from starch-based films into a food simulant

• Published in: Food science & technology Vol. 50; no. 2; pp. 432 - 438
• Main Authors: Kuorwel, Kuorwel K., Cran, Marlene J., Sonneveld, Kees, Miltz, Joseph, Bigger, Stephen W.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.03.2013; Elsevier
• Subjects: Antimicrobial agent; Antimicrobial agents; Antimicrobial packaging; Biological and medical sciences; Biopolymer; Carvacrol; Diffusion; Food industries; Food microbiology; Food simulants; Fundamental and applied biological sciences. Psychology; heat; Linalool; Migration; packaging films; Starch and starchy product industries; temperature; Thymol; Linalool; Migration; Biopolymer; Antimicrobial packaging; Carvacrol; Thymol; Diffusion; Antimicrobial agent; Food simulants; Starch; Film; Packaging; Carbohydrate; Essential oil; Conditioning; Polysaccharide; Food
• ISSN: 0023-6438; 1096-1127
• DOI: 10.1016/j.lwt.2012.08.023

The migration of antimicrobial (AM) agents carvacrol, thymol and linalool from heat pressed and coated starch-based packaging films into isooctane was investigated and the release of the agents consistently obeyed first-order kinetics. When the test temperature was increased from 15 to 35 °C, the diffusion coefficients increased from 6.3 × 10−13 to 12.9 × 10−13 m−2 s−1 for carvacrol, from 12.0 × 10−13 to 29.7 × 10−13 m−2 s−1 for thymol and from 9.5 × 10−13 to 19.0 × 10−13 m−2 s−1 for linalool from the heat pressed starch-based films. The diffusion coefficients of carvacrol, thymol and linalool from coated starch-based films containing increased from 2.2 × 10−13 to 8.7 × 10−13 m−2 s−1, from 2.7 × 10−13 to 6.1 × 10−13 m−2 s−1 and from 5.1 × 10−13 to 9.4 × 10−13 m−2 s−1 respectively between 15 and 35 °C. The activation energies for the migration of carvacrol, thymol and linalool from the heat pressed films were 26.2, 33.6 and 25.5 kJ mol−1 respectively and those for the migration from the coated systems were 31.3, 3.0 and 22.5 kJ mol−1 respectively. The results suggest that the AM agents show a potential for use as AM packaging materials. ► The migration of AM agents from starch-based films into isooctane was investigated. ► The release of AM agents obeyed first-order kinetics. ► The AM agents show potential for use as AM packaging materials.