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Thermo-mechanical processing of sugar beet pulp. I. Twin-screw extrusion process

Rouilly, Antoine and Jorda, Jérémy and Rigal, Luc Thermo-mechanical processing of sugar beet pulp. I. Twin-screw extrusion process. (2006) Carbohydrate Polymers, 6 (1). 81-87. ISSN 0144-8617

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.carbpol.2006.02.025


Sugar beet pulp (SBP) is the raffinate of sugar extraction. Composed of empty vegetal cells, three quarters of it consist of polysaccharides. As it is cheap and produced in great quantities SBP is a potential raw material for industrial applications other than cattle feeding. Twin-screw extrusion modified its structure and destructuring level depended on the specific mechanical energy provided (SME). By gradually increasing this energy, the rate of soluble matter increased, cell structure was progressively destroyed and SBP rheological behaviour was modified. For an SME of 745 W h kg-1, SBP examined through a scanning electron microscope showed a structure similar to that of a composite formed by a continued matrix consisting mainly of pectin and hemicelluloses filled with cellulose microfibres. Plasticized SBP was then formed by injection-molding. Thus treated, SBP becomes a cheap alternative to the use of thermoplastic starch for the production of biodegradable materials.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Carbohydrate Polymers website: http://www.sciencedirect.com/science/journal/01448617
HAL Id:hal-03594567
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Laboratoire de Chimie Agro-Industrielle - LCA (Toulouse, France) - Fractionnement et transformation des agroressources
Deposited On:19 May 2010 14:48

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