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Title: Application of tailor-made membranes in a multi-stage process for the purification of sweeteners from Stevia rebaudiana
Authors: Vanneste, J ×
Sotto, A
Courtin, Christophe
Van Craeyveld, V
Bernaerts, Kristel
Van Impe, Jan
Vandeur, J
Taes, S
Van der Bruggen, Bart #
Issue Date: Apr-2011
Publisher: Applied Science Publishers
Series Title: Journal of Food Engineering vol:103 issue:3 pages:285-293
Abstract: In this paper the performance of a three stage process with commercial as well as tailor-made polyether-sulphone (PES) membranes for the purification of sweeteners from Stevia rebaudiana Bertoni was evaluated. Retentions of the sweeteners for a synthetic mixture and plant extract in combination with flux decline measurements indicated that, in contrast with the lab-made membranes, on most commercial membranes a foulant layer was formed that influenced the separation performance negatively. For the plant extract, the best commercial membrane (PW010) had a selectivity and flux similar to the best lab-made membrane (27% PES), but the lab-made membrane was preferred because it showed a slightly lower retention of the sweeteners, as desired. Starting from an extract purity of 11% with the overall process (microfiltration, ultrafiltration, nanofiltration) a purity of 37% and a yield of 30% could be reached. (C) 2010 Elsevier Ltd. All rights reserved.
URI: 
ISSN: 0260-8774
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Process Engineering for Sustainable Systems Section
Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section
Centre for Food and Microbial Technology
× corresponding author
# (joint) last author

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