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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Bibliographic Details
Published inItalian journal of food science Vol. 31; no. 6SI; p. 1
Main Authors Batista, R.A, Faria, J.T, Espitia, P.J.P, Narain, N, Soares, N.F.F, Medeiros, E
Format Journal Article
LanguageEnglish
Published Chiriotti Editori S.r.l 01.12.2019
Subjects
Analysis
Mechanical properties
Microscopy
Oxidation-reduction reactions
Plastic products
Polyethylene
Retail trade
Brazil
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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
ISSN:1120-1770