NDLI: Comparison of different twin-screw extraction conditions for the production of arabinoxylans.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Jacquemin, Leslie Mogni, Assad Zeitoun, Rawan Guinot, Cécile Sablayrolles, Caroline Saulnier, Luc Pontalier, Pierre-Yves
Description	Author Affiliation: Jacquemin L ( Université de Toulouse, INP-ENSIACET, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France); Mogni A ( Université de Toulouse, INP-ENSIACET, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France); Zeitoun R ( Université de Toulouse, INP-ENSIACET, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France); Guinot C ( INRA, UR 1268 BIA, F44316 Nantes, France.); Sablayrolles C ( Université de Toulouse, INP-ENSIACET, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France); Saulnier L ( INRA, UR 1268 BIA, F44316 Nantes, France.); Pontalier PY ( Université de Toulouse, INP-ENSIACET, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France)
Abstract	The aim of this article is to compare two different sets of optimal conditions for twin-screw extraction of xylans and define their influence on the purification steps, combining ultrafiltration and industrial chromatography. Two xylan extracts were obtained by twin-screw extrusion of straw and bran. Condition 1 used a high straw/bran ratio (equal to 6) and high sodium hydroxide content, and condition 2 used a lower straw/bran ratio (equal to 2) and low sodium hydroxide content. Arabinoxylan extraction yields are slightly higher for conditions with low straw content (5.1% versus 4.4%). Nevertheless, these recovery yields remain between 9% and 10%. Ultrafiltration is as efficient as evaporation for polysaccharide concentration, with lower energy consumption, but also demineralizes the solution. The combination of ultrafiltration and chromatography gives partial purification of the extract with a final arabinoxylan purity ranging from 16% to 26%. This is slightly higher than by direct precipitation, but limited because all the large molecules such as proteins and lignins were retained by ultrafiltration.
File Format	HTM / HTML
ISSN	01448617
Journal	Carbohydrate Polymers
Volume Number	116
e-ISSN	18791344
Language	English
Publisher	Elsevier
Publisher Date	2015-02-13
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Biochemistry__semicolon__materials Discipline Science Xylans Isolation & Purification Chromatography, Ion Exchange Sodium Hydroxide Chemistry Triticum Ultrafiltration Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Polymers and Plastics

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