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- Title
Gum arabic fractionation using synthetic membranes: The importance of fouling.
- Authors
Manning, Harriet E.; Bird, Michael R.
- Abstract
The fractionation of 2 wt% gum arabic using 0.1, 0.5 and 0.8 μm polysulfone (PS) flat sheet membranes is investigated. Fluxes of between 35 and 80 L m-2 h-1 were achieved during diafiltration experiments at cross-flow velocities of between 1.0 and 1.6 m s-1. Although all three membranes rejected a large proportion of the total solids, a high degree of fractionation was seen, particularly for the 0.1 μm membrane, which establishes the principle of this novel membrane application. Rejection of high MW arabinogalactan-protein complex (AGP) was observed with selective transmission of lower MW glycoprotein (GP). Multi-cycle experiments showed that flux can be well recovered after cleaning of the membrane, although with the 0.8 μm membrane, greater fractionation was seen after some fouling had occurred.
- Subjects
FOULING; GUM arabic; GLYCOPROTEINS; GUMS &; resins; STABILIZING agents; SURFACES (Technology); CLEANING
- Publication
Food & Bioproducts Processing: Transactions of the Institution of Chemical Engineers Part C, 2015, Vol 93, Issue 1, p298
- ISSN
0960-3085
- Publication type
Article
- DOI
10.1016/j.fbp.2014.10.008