Title :

From raw microalgae to bioplastics: Conversion of Chlorella vulgaris starch granules into thermoplastic starch

Author(s) :

Six, A. [Auteur]
CEA Cadarache
Dauvillee, David [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 [UGSF]
Lancelon-Pin, C. [Auteur]
Centre de Recherches sur les Macromolécules Végétales [CERMAV]
Dimitriades-Lemaire, A. [Auteur]
CEA Cadarache
Compadre, A. [Auteur]
Dubreuil, C. [Auteur]
Ministère de l'Alimentation, de l'Agriculture et de la Pêche [Paris, France]
Alvarez, P. [Auteur]
IRCELYON-Catalyse Hétérogène pour la Transition Energétique [IRCELYON-CATREN]
Sassi, J.-F. [Auteur]
CEA Cadarache
Li-Beisson, Y. [Auteur]
Environnement, Bioénergie, Microalgues et Plantes [EBMP]
Institut de Biosciences et Biotechnologies d'Aix-Marseille (ex-IBEB) [BIAM]
Putaux, J.-L. [Auteur]
Centre de Recherches sur les Macromolécules Végétales [CERMAV]
Le Moigne, N. [Auteur]
Polymères Composites et Hybrides [PCH - IMT Mines Alès]
Fleury, G. [Auteur]
CEA Cadarache

Journal title :

Carbohydrate Polymers

Abbreviated title :

Carbohydrate Polymers

Pages :

122342

Publisher :

Elsevier BV

Publication date :

2024-05

ISSN :

0144-8617

English keyword(s) :

Microalgae
Chlorella vulgaris
Thermoplastic starch
Bioplastics
Extrusion
Injection

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Microalgae are emerging as a promising feedstock for bioplastics, with Chlorella vulgaris yielding significant amounts of starch. This polysaccharide is convertible into thermoplastic starch (TPS), a biodegradable plastic ...
Show more >Microalgae are emerging as a promising feedstock for bioplastics, with Chlorella vulgaris yielding significant amounts of starch. This polysaccharide is convertible into thermoplastic starch (TPS), a biodegradable plastic of industrial relevance. In this study, we developed a pilot-scale protocol for extracting and purifying starch from 430 g (dry weight – DW) of starch-enriched Chlorella vulgaris biomass. More than 200 gDW of starch were recovered, with an extraction yield and starch purity degree reaching 98 and 87 %, respectively. We have characterized this extracted starch and processed it into TPS using twin-screw extrusion and injection molding. Microalgal starch showed similar properties to those of native plant starch, but with smaller granules. We compared the mechanical properties of microalgal TPS with two controls, namely a commercial TPS and a TPS prepared from commercial potato starch granules. TPS prepared from microalgal starch showed a softer and more ductile behavior compared to the reference materials. This study demonstrates the feasibility of recovering high-purity microalgal starch at pilot scale with high yields, and highlights the potential of microalgal starch for the production of TPS using industrially relevant processes.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Research team(s) :

Plant Storage Polysaccharides

Submission date :

2024-06-19T11:37:43Z
2024-06-28T06:56:51Z