TY - JOUR
T1 - Rheological characterization of Porphyridium sordidum and Porphyridium purpureum exopolysaccharides
AU - Medina-Cabrera, Edilberto Vicente
AU - Gansbiller, Moritz
AU - Rühmann, Broder
AU - Schmid, Jochen
AU - Sieber, Volker
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/2/1
Y1 - 2021/2/1
N2 - Porphyridium exopolysaccharides (EPSs), which contain sulfate and methyl groups, have a similar potential for use in multiple industrial applications as macroalgae counterparts but lack detailed characterization. For this reason, we produced 0.21 g L−1 of P. sordidum EPS and 0.17 g L−1 P. purpureum EPS, followed by a thorough rheological characterization in respect to their differences in monomer composition, sulfate concentrations and methyl patterns. Furthermore, the effect of NaCl and CaCl2 was evaluated, and the effect of high salinity media on the rheological properties of the biopolymers was analyzed. Both Porphyridium EPSs show a remarkable stability at high temperature and under the effect of mono- and divalent cations, and high salinity cultivation medium, which was evidenced by the rheological properties of the EPS. This feature is not displayed by many carbohydrate polymers, making it possible to enrich current applications in which EPS are used.
AB - Porphyridium exopolysaccharides (EPSs), which contain sulfate and methyl groups, have a similar potential for use in multiple industrial applications as macroalgae counterparts but lack detailed characterization. For this reason, we produced 0.21 g L−1 of P. sordidum EPS and 0.17 g L−1 P. purpureum EPS, followed by a thorough rheological characterization in respect to their differences in monomer composition, sulfate concentrations and methyl patterns. Furthermore, the effect of NaCl and CaCl2 was evaluated, and the effect of high salinity media on the rheological properties of the biopolymers was analyzed. Both Porphyridium EPSs show a remarkable stability at high temperature and under the effect of mono- and divalent cations, and high salinity cultivation medium, which was evidenced by the rheological properties of the EPS. This feature is not displayed by many carbohydrate polymers, making it possible to enrich current applications in which EPS are used.
KW - P. purpureum EPS
KW - P. sordidum EPS
KW - Rheological properties
KW - Salts
KW - Stability
KW - Sulfate
UR - http://www.scopus.com/inward/record.url?scp=85096500651&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2020.117237
DO - 10.1016/j.carbpol.2020.117237
M3 - Article
C2 - 33278993
AN - SCOPUS:85096500651
SN - 0144-8617
VL - 253
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
M1 - 117237
ER -