Objective The increasing demand from consumers and industry for environmentally friendly and renewablepolymers explains the great interest for plant macromolecules as substitutes of synthetic,petroleum-based, polymers. Besides starch and cellulose which have been extensively studied,proteins exhibited great potential for biopackaging materials, plastic fims, adhesives anddisposables (1). The use of proteins as film forming agents concerns various applications :edible films, coatings, soluble films, biodegradable films.In the present project we want to focus on :- films for food packaging : special attention will be paid to biodegradable films with selective permeability for gases like O2 and CO2 or to water and aroma;- plastic films for agricultural use;- coatings for different substrates.The use of wheat gluten as a substitute for synthetic polymers appears as a very interesting optionfor many reasons :1. Wheat is a major crop in Europe, well adapted to the lands and climates, but new valorisation is desirable to insure continuous development of agriculture;2. Gluten is available in large amounts at a reasonable cost;3. The physicochemical properties of wheat gluten make it a raw material particularly interesting for many non food utilisations, especially for making plastic materials. Properties of interest are mechanical, film forming, adhesive, and barrier properties. Protein properties can be well adapted by physical, chemical and enzymatic treatments.Previous studies have shown that it is possible to make transparant and strong films from gluten.Sofar, food applications have been considered, but this project will be more focused on the useof gluten in non-food applications, an unexploited field. In order to reach large scaleapplications, more knowledge is needed on the interdependence between protein composition andstructure on the one hand and the processability and the final properties of gluten products on theother hand. In this project, we propose to examine the suitability of different gluten proteins toproduce plastic materials, especially films, through their physical, chemical and enzymicprocessing.The aim of this project is to relate the protein structure and properties at the molecular level(protein interactions, formation of covalently linked networks) to the macroscopic propertiesof the protein network and at least of the final product (mechanical properties, barrierproperties). Thestructure-properties relationships enable to optimize and tailor the protein structure andprocessing conditions in order to obtain specific bulk and film properties of the protein. Theproperties can be further optimized for each for application. The research programme was divided into five inter-related tasks with specific objectives :Task 1. To exploit through fractionation procedures the great differences in the physicochemical and functional properties between monomeric gliadins and polymeric glutenins;Task 2. To adapt through chemical, enzymatic modifications or even mutagenesis wheat proteins to the prepara biomaterials;Task 3. To get more knowledge about mechanism of protein network formation in biomaterial films;Task 4. To develop wet and low-moisture processes to prepare biomaterials from wheat proteins;5. To characterize wheat proteins materials and model their behaviour to predict theirproperties. Fields of science natural sciencesbiological sciencesbiochemistrybiomoleculesproteinsnatural scienceschemical sciencespolymer sciencesengineering and technologymaterials engineeringcoating and filmsengineering and technologyother engineering and technologiesfood technologyfood packagingengineering and technologyindustrial biotechnologybiomaterials Programme(s) FP4-FAIR - Specific research, technological development and demonstration programme in the field of agriculture and fisheries (including agro-industry, food technologies, forestry, aquaculture and rural development), 1994-1998 Topic(s) 1.2.3 - End-use and market requirements Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator I.N.R.A. EU contribution No data Address RUE DE LA GERAUDIERE - B.P. 1627 44316 NANTES France See on map Total cost No data Participants (5) Sort alphabetically Sort by EU Contribution Expand all Collapse all AMYLUM N.V. Belgium EU contribution No data Address BURCHTSTRAAT, 10 9300 AALST See on map Total cost No data ATO - DLO - AGROTECHNOLOGICAL RESEARCH INSTITUTE Netherlands EU contribution No data Address P.O. BOX 17 6700 AA WAGENINGEN See on map Total cost No data ECOLE NATIONALE SUPERIEURE AGRONOMIQUE DE MONTPELLIER France EU contribution No data Address PLACE PIERRE VIALA, 2 34060 MONTPELLIER See on map Total cost No data S.I.K. Sweden EU contribution No data Address P.O. BOX 5401 402 29 GÖTEBORG See on map Total cost No data ULICE S.A. France EU contribution No data Address ZAC "LES PORTES DE RIOM" - B.P. 173 63200 RIOM CEDEX See on map Total cost No data