Evaluation of a UV absorber added to PET bottles for edible oil packaging

Abstract

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.

Effect of packaging material headspace, oxygen and light transmission, temperature and storage time on quality characteristics of extra virgin olive oil

“…They are also in agreement with those of Coltro, Padula, Segantini Saron, Borghetti, and Penteado Buratin (2003) who reported that the addition of 0.08% of Tinuvin 326 TM UV absorber is probably enough to provide the studied PET bottles with the light barrier characteristics necessary to maintain stability of olive oil for 6 months at 25°C.…”

The thermal, optical, flame retardant, and morphological consequence of embedding diacid‐capped ZnO into the recycled PET matrix

“…Due to the high UV protection nature, ZnO is used as an ideal UV blocker and usually added into cosmetics for ultraviolet protection. 39 In the view of the above mentioned facts, colorless ZnO NPs doping in PET expected to create beneficial NCs especially for the food packaging industry act as a filter.…”

Physical Properties of Edible Gelatin Films Colored with Chlorophyllide

“…28.2) the presence of chlorophyllide in the gelatin-based films contributed to an increase in this property, since the films showed no transmittance at 200 nm, and between 2.6 and 6.0 at 280 nm. The chlorophyllide absorbed UV radiation, having a protective effect against the degradation of the material (Hanlon et al 1998) and the packaged foodstuff (Coltro et al 2003). Thus, films colored with chlorophyllide show excellent UV barrier properties, suggesting that this type of material could be used to package foods rich in lipids and/or oxygen-susceptible vitamins (Bekbolet 1990;Fang et al 2002;Artharn et al 2007).…”