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Bernaerts TMM, Kyomugasho C, Van Looveren N, et al. Molecular and rheological characterization of different cell wall fractions of Porphyridium cruentum. Carbohydr Polym. 2018;195:542-550doi: 10.1016/j.carbpol.2018.05.001.
Bernaerts, T. M. M., Kyomugasho, C., Van Looveren, N., Gheysen, L., Foubert, I., Hendrickx, M. E., & Van Loey, A. M. (2018). Molecular and rheological characterization of different cell wall fractions of Porphyridium cruentum. Carbohydrate polymers, 195542-550. https://doi.org/10.1016/j.carbpol.2018.05.001
Bernaerts, Tom M M, et al. "Molecular and rheological characterization of different cell wall fractions of Porphyridium cruentum." Carbohydrate polymers vol. 195 (2018): 542-550. doi: https://doi.org/10.1016/j.carbpol.2018.05.001
Bernaerts TMM, Kyomugasho C, Van Looveren N, Gheysen L, Foubert I, Hendrickx ME, Van Loey AM. Molecular and rheological characterization of different cell wall fractions of Porphyridium cruentum. Carbohydr Polym. 2018 Sep 01;195:542-550. doi: 10.1016/j.carbpol.2018.05.001. Epub 2018 May 02. PMID: 29805010.
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Carbohydr Polym. 2018 Sep 01;195:542-550. doi: 10.1016/j.carbpol.2018.05.001. Epub 2018 May 02.

Molecular and rheological characterization of different cell wall fractions of Porphyridium cruentum.

Carbohydrate polymers

Tom M M Bernaerts, Clare Kyomugasho, Noor Van Looveren, Lore Gheysen, Imogen Foubert, Marc E Hendrickx, Ann M Van Loey

Affiliations

  1. Laboratory of Food Technology, Leuven Food Science and Nutrition Research Center (LFoRCe), Department of Microbial and Molecular Systems (M(2)S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Heverlee, Belgium.
  2. Laboratory Food and Lipids, Leuven Food Science and Nutrition Research Center (LFoRCe), Department of Microbial and Molecular Systems (M(2)S), KU Leuven Kulak, E. Sabbelaan 53, 8500 Kortrijk, Belgium.
  3. Laboratory of Food Technology, Leuven Food Science and Nutrition Research Center (LFoRCe), Department of Microbial and Molecular Systems (M(2)S), KU Leuven, Kasteelpark Arenberg 22, Box 2457, 3001 Heverlee, Belgium. Electronic address: [email protected].

PMID: 29805010 DOI: 10.1016/j.carbpol.2018.05.001

Abstract

Cell wall related polysaccharides of the red microalga Porphyridium sp. were shown to be a promising source of new sustainable thickening agents. Isolated extracellular polysaccharides (EPS) consisted of high molecular weight polymers, showing a higher intrinsic viscosity compared to several commercially used hydrocolloids. Aqueous solutions of EPS (2% w/w) were characterized by substantial viscosities and weak gel behavior. Even though the extracted water soluble cell wall polysaccharides exhibited the same monosaccharide profile as EPS (composed of galactose, glucose, xylose and glucuronic acid), a lower molecular weight and intrinsic viscosity was observed for this fraction, resulting in poor rheological properties. Therefore, it was hypothesized that the physicochemical properties were related with a different molecular structural organization of these monosaccharides and sulfate groups. The main challenge for commercialization of extracellular polysaccharides of Porphyridium sp. remains the purification of these fractions to obtain polysaccharide extracts with low protein and salt contents.

Copyright © 2018 Elsevier Ltd. All rights reserved.

Keywords: Exopolysaccharides; Gel behavior; Intrinsic viscosity; Molecular weight; Red microalga; Thickening agent

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