Development of a Gaseous Chlorine Dioxide Sustained Controlled Release System as a Form of Active Food Packaging
Bibliographic record
Abstract
RÉSUMÉ: L'industrie de l'emballage alimentaire explore les emballages émetteurs de gaz antimicrobiens en tant que stratégie innovante pour prolonger la durée de conservation des produits alimentaires. Le dioxyde de chlore (ClO2), un gaz antimicrobien puissant dont l'utilisation est approuvée comme désinfectant dans la transformation des aliments, a montré son potentiel en tant qu'agent gazeux dans les systèmes d'emballage actifs. L'incorporation de précurseurs de génération de gaz ClO2 dans des matrices polymères est une approche particulièrement prometteuse. Cette méthode offre des avantages tels qu'une cinétique de libération réglable, une meilleure stabilité des précurseurs et un contact direct réduit avec les aliments. Néanmoins, le développement de films à libération de gaz ClO2 efficaces se heurte à plusieurs difficultés. Il s'agit notamment de parvenir à une libération soutenue de ClO2 adaptée à des produits alimentaires particuliers, d'identifier des matériaux polymères compatibles pour la génération de ClO2 et d'adapter les techniques de traitement industriel. Ce projet vise à créer un système d'emballage qui libère du gaz ClO2 de manière contrôlée et durable en utilisant des polymères et des techniques couramment employées dans l'emballage alimentaire. L'objectif est d'améliorer la sécurité des produits frais et de réduire la décomposition microbienne sans affecter négativement la qualité du produit. La recherche présentée dans cette thèse étudie les mécanismes de libération du ClO₂, la façon dont les facteurs environnementaux influencent les modèles de libération, et l'efficacité des films développés dans la lutte contre divers pathogènes et champignons et l'allongement de la durée de conservation des produits frais. ABSTRACT: The food packaging industry is exploring antimicrobial gas-emitter packaging as an innovative strategy for extending the shelf life of food products. Chlorine dioxide (ClO2), a potent antimicrobial gas approved for use as a disinfectant in food processing, has shown potential as a gaseous agent in active packaging systems. The incorporation of ClO2 gas generation precursors into polymeric matrices is a particularly promising approach. This method offers benefits such as adjustable release kinetics, enhanced precursor stability, and minimized direct food contact. Nevertheless, the development of effective ClO2 gas-release films faces several challenges. These challenges include achieving sustained ClO2 release tailored to particular food items, identifying compatible polymeric materials for ClO2 generation, and adapting industrial processing techniques. This project aimed to create a packaging system that releases ClO2 gas in a controlled and sustained manner using polymers and techniques commonly employed in food packaging. The goal is to enhance the safety of fresh produce and reduce microbial decay without negatively affecting the product quality. The research presented in this thesis investigated the mechanisms of ClO₂ release, how environmental factors influence the release patterns, and the effectiveness of the developed films in combating various pathogens and extending the shelf-life of fresh products.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".