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| Makoure, Dounia; Arhaliass, Abdellah; Echchelh, Adil; Baron, Regis; Legrand, Jack. |
| In this paper we present the reactive extrusion process to extract the phycocolloids from the sea products. By comparing with other techniques, this process has a several advantages like the economic return, the flexibility, the production of various products with different characteristics and time gains. There are two types of extruder: single-screw and double-screw, each one has its specific properties. The solid products are introduced by means of the hopper that is equipped with a dosage pump for the regulation of the flow. Liquid products are, generally, injected in the not filled zones, through an external pump. The products undergo thermo mechanical modifications and then the shaping of the final products was done in the die. The reactive extrusion... |
| Tipo: Text |
Palavras-chave: Extrusion réactive; Valorisation; Coproduits; Produits de la mer; Phycocolloïdes alginate; Reactive extrusion; Valorization; By-products; Sea-products; Phycocolloids; Alginate. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00500/61171/64645.pdf |
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| Vauchel, Peggy; Kaas, Raymond; Arhaliass, Abdellah; Baron, Regis; Legrand, Julien. |
| Alginates are natural polysaccharides that are extracted from brown seaweeds and widely used for their rheological properties. The main step in the extraction protocol used in the alginate industry is that of alkaline extraction. A batch process is used for this step, which is time-, water-, and reactant-consuming. The possibility of extracting by reactive extrusion was investigated. The reactive extrusion process appeared to be more efficient than the batch process for the alkaline extraction of alginates from Laminaria digitata in several key ways: Time demand is reduced from about an hour to only few minutes, water and reactant requirements are divided by more than a factor 2, extraction yield is 15% higher (relative enhancement), and the rheological... |
| Tipo: Text |
Palavras-chave: Intrinsic viscosity; Reactive extrusion; Laminaria digitata; Alkaline extraction; Alginate. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6255.pdf |
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