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Literatura académica sobre el tema "Pellicules plastiques – Stérilisation (microbiologie)"
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Tesis sobre el tema "Pellicules plastiques – Stérilisation (microbiologie)"
Gaston, Fanny. "Impact des rayonnements γ sur les films plastiques utilisés pour des applications biopharmaceutiques et biotechnologiques". Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4704.
Texto completoThe single use plastic systems are designed for biopharmaceutical and biotechnology industries. They are principally made of polymers and they are very appreciated for their barrier properties to gas and water vapor ensuring preservation of the solutions contained in these single-use systems. These devices have many advantages for industrial: they avoid cleaning stainless steel tanks and thus limit the risk of cross-contamination. In view of their future use, these devices are sterilized by γ-irradiation. The purpose of this study is to highlight the impact of γ sterilization on some polymers and on some antioxidants used in the manufacture of polymers. The samples are analyzed before and after sterilization using different γ-doses and over time (natural ageing). The structural modifications of γ-irradiated polymers (EVA, EVOH and PE) were characterized by various analytical methods: FTIR, Raman spectroscopy, ESR, chromatography… Some results are analyzed using chemometric methods such as PCA (Principal Component Analysis), AComDim (ANOVA Common Dimensions), and SIMPLISMA (Simple-to-use interactive self-modeling mixture analysis). The PCA allowed to highlight the impact of the irradiation dose on the polymer. The AComDim method led to the identification of the factors contributing to the evolution of structures (γ-dose, ageing and γ × ageing interaction), whereas the several lots do not involve variation. Finally, the curve resolution method, SIMPLISMA, was applied to the study of the core of the material
Durance, Loïc. "Développement d'une méthode de stérilisation par la chaleur de solutions injectables conditionnées en polyéthylène basse densité". Amiens, 2003. http://www.theses.fr/2003AMIED003.
Texto completoThe solutions for injection are usually packaged in glass flasks and sterilised by moist steam. Is the current tendency to substitute glass by the plastic because it reduce the obstruction of conditioning while increasing its shock-proofness and allows a board elimination of the wastes by incineration. Only some plastics meet both public health regulations and ecological requirements. Among them, low density polyethylene (LDPE) offers various advantages. It possesses virtually no additive, which limits the interaction hazards between plastic and chemical substances used in injection preparations. Its destruction does not bring chlorine-containing waste or other toxic matter into the atmosphere. Moreover, it is fully adapted to the various manufacturing technologies for large-scale production as the blow-fill-an-seal. However, the temperature value admitted for sterilisation is 121°C, whereas LDPE exhibits a melting point at about 117°C. Therfore, we have developped an alternative cycle of sterilisation based on F0 concept at a temperature lower than 121°C and such as it respected the LDPE containers integrity. The efficiency on the micro-organisms destruction have been calculated aid of stocks spores of Bacillus Stearothermophilus introduced into the recipients which contained water for injection as base solution. The sterilised products have been followed throughout this period. The information obtained by this work have the aim of documenting a manufacturing authorization file about products for injection for its recording with the benefit of a pharmaceutical industry of Amiens
Guy, Rioufol Catherine. "Étude de l'action des procédés de décontamination, désinfection et stérilisation sur les endotoxines d'un biofilm monobactérien expérimental d'Escherichia coli sur un support de verre et trois supports plastiques". Lyon 1, 2000. http://www.theses.fr/2000LYO1T004.
Texto completoGaston, Fanny. "Impact des rayonnements γ sur les films plastiques utilisés pour des applications biopharmaceutiques et biotechnologiques". Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4704.
Texto completoThe single use plastic systems are designed for biopharmaceutical and biotechnology industries. They are principally made of polymers and they are very appreciated for their barrier properties to gas and water vapor ensuring preservation of the solutions contained in these single-use systems. These devices have many advantages for industrial: they avoid cleaning stainless steel tanks and thus limit the risk of cross-contamination. In view of their future use, these devices are sterilized by γ-irradiation. The purpose of this study is to highlight the impact of γ sterilization on some polymers and on some antioxidants used in the manufacture of polymers. The samples are analyzed before and after sterilization using different γ-doses and over time (natural ageing). The structural modifications of γ-irradiated polymers (EVA, EVOH and PE) were characterized by various analytical methods: FTIR, Raman spectroscopy, ESR, chromatography… Some results are analyzed using chemometric methods such as PCA (Principal Component Analysis), AComDim (ANOVA Common Dimensions), and SIMPLISMA (Simple-to-use interactive self-modeling mixture analysis). The PCA allowed to highlight the impact of the irradiation dose on the polymer. The AComDim method led to the identification of the factors contributing to the evolution of structures (γ-dose, ageing and γ × ageing interaction), whereas the several lots do not involve variation. Finally, the curve resolution method, SIMPLISMA, was applied to the study of the core of the material
Karam, Layal. "Etude des interactions aux interfaces entre peptides, matériaux et bactéries, pour la mise au point de surfaces antimicrobiennes et d’emballages alimentaires actifs". Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10044/document.
Texto completoThe globalization of food trade and changes in lifestyles present new major challenges for food safety. Setting up active food packaging, via antimicrobial peptides adsorption on materials, is an innovative and proactive approach to improve the safety, quality and shelf-life of packaged foods. Peptides adsorption on surfaces and the antimicrobial activity of the functionalized materials depend mainly on surface properties, on surface treatments allowing the modification of such properties and on the peptides-materials-bacteria interactions. In this thesis, nisin, an antilisterial bacteriocin, produced by Lactococcus lactis subsp. Lactis was used as the antimicrobial agent. The selected packaging was the low density polyethylene, a commonly used packaging in the food sector. Different cold plasma processes were optimized to develop surfaces with various characteristics and specific functionalities needed for the adsorption studies. Physico-chemical surface characterization techniques permitted from one side, to confirm the surface functionalization by surface treatments and by nisin and from another side, to study the surface interactions. The antimicrobial study was undertaken to compare and confirm the antimicrobial activity of the different treated packaging. This work was also carried out against some food pathogens and at refrigeration temperature in order to assess possible future food packaging applications