Issue 16, 2013
From the journal:

Analytical Methods

Optimisation of asymmetrical flow-field fractionation for the characterisation of gum arabic (Acacia sengal var senegal) and comparison with gel permeation chromatography

Marina Andres-Brull,a   Saphwan Al-Assaf,*a   Glyn O. Phillipsab  and  Kevin Jacksonc  

* Corresponding authors

a Glyn O. Phillips Hydrocolloids Research Centre, Glyndwr University, Wrexham, UK
E-mail: s.alassaf@glyndwr.ac.uk
Fax: +44 (0)1978 293370
Tel: +44 (0)1978 29 3321

b Phillips Hydrocolloid Research Ltd., 45 Old Bond Street, London W1S 4AQ, UK

c Wyatt Technology UK Ltd, 14 Redshank Close, Haverhill, Suffolk, UK

Abstract

Asymmetrical flow field-flow fractionation (AF4) linked to three detection systems (multi angle laser light scattering, refractive index and UV) was used to determine the molecular weight and molecular distribution of the component Acacia sengal var senegal (henceforth referred to as gum arabic). The effects of sample concentration and applied field strength (cross-flow) were examined to determine the optimum fractionation conditions in comparison with the behaviour of a monodispersed polysaccharide (Pullulan-100). The results using AF4-MALLS are in good agreement with those using GPC-MALLS.

Graphical abstract: Optimisation of asymmetrical flow-field fractionation for the characterisation of gum arabic (Acacia sengal var senegal) and comparison with gel permeation chromatography

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Article information

DOI
https://doi.org/10.1039/C3AY40835C
Article type
Paper
Submitted
17 May 2013
Accepted
11 Jun 2013
First published
13 Jun 2013

Anal. Methods, 2013,5, 4047-4052

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Optimisation of asymmetrical flow-field fractionation for the characterisation of gum arabic (Acacia sengal var senegal) and comparison with gel permeation chromatography

M. Andres-Brull, S. Al-Assaf, G. O. Phillips and K. Jackson, Anal. Methods, 2013, 5, 4047 DOI: 10.1039/C3AY40835C

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