Migration of di-(2-ethylhexyl)adipate and acetyltributyl citrate plasticizers from food-grade PVC film into isooctane: Effect of gamma radiation
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Date
Authors
Zygoura, P. D.
Goulas, A. E.
Riganakos, K. A.
Kontominas, M. G.
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Elsevier
Abstract
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peer reviewed
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Journal of Food Engineering
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Description
The effect of gamma radiation on the migration of both di-(2-ethylhexyl)adipate (DEHA) and acetyltributyl citrate (ATBC) plasticizers from PVC film into the food simulant isooctane was studied as a function of time (0-48 h) at 20 degrees C. Food-grade PVC cling-film used contained 5.3% (w/w) DEHA, 3.0% (w/w) ATBC and polyadipate polymeric plasticizer. Irradiation of the films was carried out at doses of 5, 10 and 25 kGy using a [(CO)-C-60] gamma-radiation source. Determination of both plasticizers was performed using a direct gas chromatographic method. No radiation-induced transformation of the two plasticizers was observed after absorbed doses of 5-25 kGy. DEHA migrated rapidly into isooctane in contrast with ATBC. ATBC migrating amounts at equilibrium were approximately three times lower than the corresponding amounts of DEHA. Irradiation at doses 10 and 25 kGy had a small but statistically significant (P < 0.05) effect on the migration of both DEHA and ATBC into isooctane. Migration amount increased with increasing irradiation dose and contact time. The irradiation-induced increase of ATBC migration was significantly higher than the corresponding increase of DEHA migration. Results are discussed in relation to EU proposed upper limit for DEHA specific migration (18 mg/L). Diffusion coefficients for both plasticizers calculated, showed differences between irradiated and control samples. (c) 2005 Elsevier Ltd. All rights reserved.
Description
Keywords
pvc, fatty food simulant, gamma radiation, diffusion coefficients, electron-beam irradiation, polyvinyl-chloride film, packaging materials, ionizing-radiation, olive oil, mechanical-properties, contact materials, global migration, physical changes, pvdc/pvc films
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<Go to ISI>://000241073500016
http://ac.els-cdn.com/S0260877405007892/1-s2.0-S0260877405007892-main.pdf?_tid=7cc310c8a451bdc39801289a9a9b297d&acdnat=1333037756_4917eb28bb3cd097980db7ec0e324ea5
http://ac.els-cdn.com/S0260877405007892/1-s2.0-S0260877405007892-main.pdf?_tid=7cc310c8a451bdc39801289a9a9b297d&acdnat=1333037756_4917eb28bb3cd097980db7ec0e324ea5
Language
en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας