Membranes modified with rigid polymer for processing solutions of vegetable proteins
Baromembrane separation is attractive for food industry since it provides no destruction of organic substances. The aim of this study is purposeful formation of the rejection ability of macroporous polymer membranes simultaneously with their resistance against compression for juice clarification and...
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Published in | Acta Periodica Technologica Vol. 2023; no. 54; pp. 313 - 324 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Faculty of Technology, Novi Sad
2023
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Subjects | |
Online Access | Get full text |
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Summary: | Baromembrane separation is attractive for food industry since it provides no
destruction of organic substances. The aim of this study is purposeful
formation of the rejection ability of macroporous polymer membranes
simultaneously with their resistance against compression for juice
clarification and protein fractionalization. This problem is solved by
modifying of asymmetric polymer microfiltration membrane with polymethyl
methacrilate (PMMA), the content of this rigid modifier was varied from 15
to 80 mass %. Morphology of composite membranes was investigated with SEM
method, water test was performed. Based on obtained results, the modifying
mechanism was proposed: (I) blockage membrane pores with PMMA particles,
(II) stretching pore walls caused by mechanical action of embedded
particles, (III) screening pores of both active layer and support with
modifier particle located on the outer surface, The optimal PMMA amount in
the membranes was found to be up to 20 %. Depending on the modifier content,
selectivity of the membranes towards vegetable albumin, which was extracted
from Moringa oleifera seeds, reaches 30-91 %. Thus, the membranes can be
used for the purposeful separation of the large protein particles from
smaller fractions, which can be used as nutritional supplements due to their
better digestibility. |
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ISSN: | 1450-7188 2406-095X |
DOI: | 10.2298/APT2354313M |