Migration study of carvacrol as a natural antioxidant in high-density polyethylene for active packaging |
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| Authors: | M Peltzer J Wagner A Jiménez |
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| Affiliation: | 1. Analytical Chemistry, Nutrition &2. Food Sciences Department , University of Alicante , PO Box 99, E-03080, Alicante, Spain mercedes.peltzer@ua.es;4. Department of Science and Technology , University of Quilmes , R.S. Pe?a 182, Bernal, Argentina;5. Food Sciences Department , University of Alicante , PO Box 99, E-03080, Alicante, Spain |
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| Abstract: | The migration behaviour of low molecular weight compounds from food packaging materials is one of the key issues in assessing the possibility of use in such applications. The aim of this work was to study the migration of carvacrol (1% and 2% w/w) when added to high-density polyethylene. All materials were exposed to the food simulants olive oil and distilled water separately at 40°C and 25°C. Three significant variables influencing the migration process were considered: incubation temperatures, the initial concentration of antioxidant, and the type of simulant (oil and aqueous). The amount of carvacrol migrating to olive oil was significantly higher than in water because of the higher solubility of this antioxidant in oil. Experimental results agreed reasonably well with those obtained by the application of a simple model derived from Fick's Second Law. Carvacrol could therefore be used in active packaging formulations as its release from the polymer matrix can be controlled. |
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| Keywords: | migration active packaging carvacrol high-density polyethylene |
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