| Autor: |
Fábio Cerdeira LIRIO, Mauro Carlos Lopes SOUZA, Bluma Guenther SOARES, Valéria Barbosa BORGES, Marta Maria Braga Baptista Soares XAVIER |
| Jazyk: |
English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Journal of Bioenergy and Food Science, Vol 4, Iss 2, Pp 91-98 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2359-2710 |
| DOI: |
10.18067/jbfs.v4i2.135 |
| Popis: |
This study investigated the overall migration from Poly (vinyl chloride) (PVC) films into food simulants, after gamma irradiation (60Co) or electron beam radiation. PVC films containing di-(2-ethylhexyl) adipate (DEHA) and epoxidized soybean oil were stored under controlled temperature (24 ± 1oC) and moisture (50 ± 5%) for 2 days. These films were supported on a stainless-steel plates and specimens were subjected to ionizing radiation treatment with gamma radiation from a 60Co source (dose rate = 20 Gy.min-1) or electron beam radiation (dose rate = 120 Gy.min-1) at absorbed doses equal to 0, 10, 25 and 50 kGy. Overall packing migrants were evaluated on different food simulants (distilled water, 3 % w/v acetic acid and 10 % v/v ethanol) as a function of time (24, 48 and 72 hours). Results of overall migration levels showed that the treatment with radiation doses above 10 kGy promoted a significant increase of the overall packing migrants levels into all aqueous food simulants (p < 0.05). The increase of overall packing migrants induced by gamma rays or electron beam radiation was associated with radiolysis reaction, which could rise low molecular weight radiolysis products with a higher mobility into food simulants. The increase of discontinuous of polymer due to radiolysis could also explain the increase of packing migrants after irradiation procedure. Overall migration levels were also enhanced with increasing exposure time to food simulants. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
