Recherche

Blanchard Lucien

Collaborateur scientifique HES

Compétences principales

Collaborateur scientifique HES

Bureau: HEIA_H10.31

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH

Institut
ChemTech - Institut des technologies chimiques

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Terminés

Bio-based smart packaging for enhanced preservation of food quality

AGP

Rôle: Collaborateur/trice

Financement: FR - EIA - Institut iRAP; Horizon 2020; FR - EIA - Institut iRAP

Description du projet : The BIOSMART project proposal has the ambition to develop active and smart bio-based and compostable packages addressing the needs of several food market segments. The knowledge gained from developing the novel packages forms the basis for tailoring performance and functionality to other flexible and rigid food packages in diverse market segments. An holistic ecosystem approach is pursued by offering solutions that bring enhanced performance and acceptable economics to the packaging value chain to facilitate their implementation and large-scale commercialization. Critical issues that differentiate the present packages from the future all-bio-based and compostable ones are enhanced active and smart functionalities that make possible: light weighting, reduced food residues, shelf life monitoring and longer shelf life, easier consumer waste handling, and all this at a competitive cost to the incumbent. The BIOSMART project proposal develops an approach for selectively integrating superhydrophobic surfaces, microencapsulated phase change materials (thermoregulation), barrier coatings, very low cost sensor devices, and new bio-based and active ingredients (anti-microbial, anti-fungal, and antioxidants), into all-bio-based compostable packages. Three generic packaging systems are selected with specific performance needs as defined by current multi-material fossil-fuel based packages (i.e. pouches, terrines and an hybrid carton/thin film tray). The associate life cycle assessments for the different possible scenarios include the economic feasibility as a defining key performance indicator. Ultimately, the gathered developmental knowledge is consolidated in a material selection and package performance simulation Application. It enables through optimization of key performance indicators and representing emulators a quick selection of relevant plastics, packaging composition, and cost.

Equipe de recherche au sein de la HES-SO: Brodard Pierre , Hennebert Jean , Blanchard Lucien , Albergati Luce , Esseiva Julien , Zurbuchen Nicolas , Ayer Baptiste , Koopmans Rudolf , Mavrozoumi Vasiliki , Rychener Lorenz , Marti Roger

Partenaires académiques: FR - EIA - Institut ChemTech; FR - EIA - Institut iCoSys

Durée du projet: 01.04.2017 - 31.10.2021

Montant global du projet: 948'840 CHF

Statut: Terminé

2022

Fed-batch system for propagation of brewer’s yeast

Article scientifique ArODES

Dan Donnelly, Lucien Blanchard, Michal Dabros, Seamus O'Hara, Dermot Brabazon, Greg Foley, Brian Freeland

Journal of the American Society of Brewing Chemists, 2022, vol. 80, no. 2, pp. 190-200

Lien vers la publication

Résumé:

A novel high-density yeast propagation system has been developed, which produced yeast that performed as well as cropped yeast in commercial brewery trials. This process is capable of producing yeast concentrations 13 times greater than traditional yeast propagation approaches used in breweries to date. The system is based on a controlled fed-batch yeast fermentation, which can produce pitching yeast in as little as 24 h. A demonstrator plant was installed in a regional brewery and yeast produced from the test-platform was used to pitch commercial brews. Plant-scale trials have shown that the yeast propagated using this new system had the same fermentation profile compared to control fermentations that used cropped yeast. Volatile analysis showed no significant difference between the control and experimental beers. The experimental beers tasted true-to-type and were released to trade. The new process allows for smaller pitching volumes while maintaining overall beer quality.

2020

Melt polycondensation for the synthesis of polyester amides using kneader reactor technology

Article scientifique ArODES

Lucien Blanchard, Chris Rader, Ennio Vanoli, Roger Marti

CHIMIA International Journal for Chemistry, 2020, vol. 74, no. 12, pp. 1024-1025

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Résumé:

In this work, we discuss the process development and scale-up of the melt polycondensation of polyester amides from a laboratory scale to kg-scale in a kneader reactor. We identified and optimized the most important critical parameters and produced kg-quantities of polyester amides with Mn up to 25'000 g/mol and reproducible thermal and mechanical properties. The special kneader reactor allows safe and efficient scale-up of polymerisation reactions at high temperature and viscous melts due to good mixing and efficient mass transfer.

2017

Synthesis of new luminescent Pt(II) complexes and their self-assembled functional architectures

Article professionnel ArODES

Lucien Blanchard, Olimpia Mamula Steiner

À jour, 2017, no. 1, pp. 15-17

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Résumé:

Square planar platinum(II) complexes are rather well known compounds in chemotherapeutic cancer treatments. But they show also very interesting electro- and photoluminescence properties. Research in organic light emitting diodes (OLED) being trendy, the interest of the scientists for such complexes has grown in these recent years. [1] Recently Mauro, De Cola and co-workers reported a new family of square planar Pt(II) complexes [2-4] containing a tridentate N-donor ligand, the 2,6-bis(3-(trifluoromethyl)-1H1,2,4-triazol-5-yl)pyridine (pyC5-CF3-tzH2). The coordination sphere is completed by various monodentate ligands. These coordination compounds showed remarkable supramolecular assembling properties and high photoluminescence quantum yields due to non-covalent intermolecular (metalmetal and π–π) interactions.

Réalisations

Recherche

Blanchard Lucien

Collaborateur scientifique HES

Compétences principales

Optimisation de procédés

Développement de bioprocédés

Collaborateur scientifique HES