COMPOSITE FILMS AS ALTERNATIVE PACKAGING FOR UV-LIGHT BARRIER INTENDED FOR FOOD PRESERVATION
Food exposure to light result in oxidation. This study aimed to develop films as UV-light barrier using central composite design. Low density polyethylene films were incorporated with tinuvin and iron particles. Physical-mechanical properties (crystallinity, microstructure, mechanical resistance, co...
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Published in | Italian journal of food science Vol. 31; no. 6SI; p. 1 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Chiriotti Editori S.r.l
01.12.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Food exposure to light result in oxidation. This study aimed to develop films as UV-light barrier using central composite design. Low density polyethylene films were incorporated with tinuvin and iron particles. Physical-mechanical properties (crystallinity, microstructure, mechanical resistance, color properties, thermal stability) and UV-light barrier were evaluated. Iron did no influence film's crystallinity; however, mechanical resistance was affected by iron. Microscopy analyses showed iron agglomeration on films surface. Films presented a maximum decomposition temperature (550.1 [+ or -] 8[degrees]C). Tinuvin and iron affected [L.sup.*], [a.sup.*], opacity and whiteness index. Only tinuvin had a significant effect on UV-light absorbed at 250, 3l0 and 360 nm wavelengths. Keywords: food packaging, food preservation, UV light barrier |
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ISSN: | 1120-1770 |