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UV Absorber Added to PET Edible Oil Bottles

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The photo‐oxidation of lipids has significant effects on the quality of edible oils. The oxidation of oils and fats can begin due to the action of external energy sources such as light. Studies showed that the rate of photo‐oxidation of the oil depends on the light transmission of the packaging, the product characteristics and the O2 barrier of the packaging. The UV absorber 2‐(2′‐hydroxy‐3′‐tert‐butyl‐5′‐methylphenyl)‐5‐chlorobenzotriazole (Tinuvin 326) has been used in PET bottles for oil, making possible the reduction of the photo‐oxidation rates. This additive was approved recently by the European Union and included in the Positive List of Directive 2001/62/EC, with a limit of specific migration. This additive is also approved by the Mercosur legislation; nevertheless its restriction of use is being reviewed in Brazil. This study had the objectives of evaluating the efficiency of the additive through the determination of the light barrier properties of PET bottles with various levels of Tinuvin 326 and of verifying its suitability for use in direct contact with foods. Copyright © 2003 John Wiley & Sons, Ltd.
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Keywords: HPLC; PET bottles; UV absorber; fatty food simulant; migration

Document Type: Research Article

Affiliations: Packaging Technology Center, Food Technology Institute, PO Box 139, Av. Brasil 2880, 13073-001, Campinas, SP, Brazil

Publication date: 2003-01-01

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