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Accueil > Research > Analysis and characterization of bio-based products

Bio-based Molecules

publié le , mis à jour le

Coordinator : Nicolas Szydlowski et Christian Rolando

Production of bio-based plastics has three major advantages compared to synthetic polymers :

  • A lower emission of greenhouse gases
  • The use of renewable raw materials
  • These materials are potentially biodegradable

Plastic starch is widely used as the raw material is abundant, cheap and represents, after degradation, a carbon source used by most microorganisms. There are however some constraints on the physicochemical properties and the structure of the starch. In most cases, it must be chemically modified or blended with synthetic polymers to achieve the required characteristics. The carbon footprint and costs associated with these post-extraction steps can be improved by optimizing the raw material in vivo, including the size of the starch grains used and amylose content (one of the two fractions of starch) .

The main objective of this project is to select genetic resources in the potato starches to isolate the properties compatible with their subsequent transformation into bioplastics. In addition, we propose to study biological processes that control these properties, that is to say, the initiation of the biosynthesis of the polymer, the Amyloplasts division and biosynthesis of amylose and amylopectin (the other fraction of the starch).

Another objective is to characterize the structural modifications of the starch in the macromolecular scale in the process of transformation / aging of the materials based on native and modified starches. Development and optimization of original techniques assay, sample preparation, fractionation and processing of suitable data.