Effects of high-intensity pulsed light on the structure, morphology, properties and migration of recyclable polyethylene and polypropylene packaging

• Grant number: 25/02764-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: July 01, 2025
• End date: March 31, 2027
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Technology
• Principal Investigator: Luís Marangoni Júnior
• Grantee: Iris de Lima
• Host Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 24/07555-2 - High-intensity pulsed light: photo-crosslinking of biopolymers, packaging and food stability, AP.JP

Abstract

Flexible plastic packaging made from polyethylene (PE) and polypropylene (PP) is widely used in the food sector due to its composition of conventional polymers and ease of recycling, especially when manufactured as mono-materials. This usage aligns with a growing global trend towards the adoption of mono-material packaging. Simultaneously, new food processing technologies are emerging, gaining prominence in scientific and industrial fields for enhancing quality, safety, and reducing food waste. In this context, pulsed light (LP) technology stands out as an innovative solution for the microbiological decontamination of packaged foods. This project aims to investigate the impact of LP processing on mono-material PE and PP packaging, focusing on analyzing changes in structure, morphology, properties, and the potential for substance migration to food simulants. A detailed assessment will be conducted on the materials before and after LP treatment. This initiative is expected to bring significant scientific and technological advancements, promoting the enhanced use of LP and expanding knowledge on packaging, solidifying its position as a promising technology in the sector. (AU)