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Synergistic effects of mixed salt on the gelation of κ-carrageenan.
Carbohydr Polym. 2014 Nov 04; 112:10-5.CP

Abstract

The effect of the addition of calcium or sodium ions on the potassium induced gelation of κ-carrageenan (κ-car) is investigated using oscillatory shear rheology and turbidimetry. Both the gelation kinetics and the steady state shear moduli are investigated. Gelation in mixed salt solutions is compared with that in pure potassium and calcium solutions. It is shown that the elastic shear modulus increases with increasing pure KCl concentration, but decreases with increasing pure CaCl2 concentration. In mixed salts, gelation of κ-car is induced by potassium and addition of CaCl2 leads to an increase of the elastic modulus with increasing CaCl2 concentration. κ-Car gelled at low mixed salt concentrations for which it remained liquid in pure salt. At equivalent ionic strengths, the effect of adding NaCl on potassium induced gelation is much weaker. In pure KCl solutions, κ-car gels are transparent, but in pure CaCl2 they become increasingly turbid with increasing CaCl2 concentration. The turbidity of gels formed in mixed salts is intermediate.

Authors+Show Affiliations

LUNAM, Université du Maine, IMMM UMR CNRS 6283, PCI, 72085 Le Mans cedex 9, France.LUNAM, Université du Maine, IMMM UMR CNRS 6283, PCI, 72085 Le Mans cedex 9, France. Electronic address: Taco.Nicolai@univ-lemans.fr.LUNAM, Université du Maine, IMMM UMR CNRS 6283, PCI, 72085 Le Mans cedex 9, France.LUNAM, Université du Maine, IMMM UMR CNRS 6283, PCI, 72085 Le Mans cedex 9, France.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25129710

Citation

Nguyen, Bach T., et al. "Synergistic Effects of Mixed Salt On the Gelation of Κ-carrageenan." Carbohydrate Polymers, vol. 112, 2014, pp. 10-5.
Nguyen BT, Nicolai T, Benyahia L, et al. Synergistic effects of mixed salt on the gelation of κ-carrageenan. Carbohydr Polym. 2014;112:10-5.
Nguyen, B. T., Nicolai, T., Benyahia, L., & Chassenieux, C. (2014). Synergistic effects of mixed salt on the gelation of κ-carrageenan. Carbohydrate Polymers, 112, 10-5. https://doi.org/10.1016/j.carbpol.2014.05.048
Nguyen BT, et al. Synergistic Effects of Mixed Salt On the Gelation of Κ-carrageenan. Carbohydr Polym. 2014 Nov 4;112:10-5. PubMed PMID: 25129710.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synergistic effects of mixed salt on the gelation of κ-carrageenan. AU - Nguyen,Bach T, AU - Nicolai,Taco, AU - Benyahia,Lazhar, AU - Chassenieux,Christophe, Y1 - 2014/05/27/ PY - 2013/12/16/received PY - 2014/05/12/revised PY - 2014/05/14/accepted PY - 2014/8/18/entrez PY - 2014/8/19/pubmed PY - 2015/10/28/medline KW - Carrageenan KW - Gel KW - Polysaccharide KW - Rheology KW - Turbidity SP - 10 EP - 5 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 112 N2 - The effect of the addition of calcium or sodium ions on the potassium induced gelation of κ-carrageenan (κ-car) is investigated using oscillatory shear rheology and turbidimetry. Both the gelation kinetics and the steady state shear moduli are investigated. Gelation in mixed salt solutions is compared with that in pure potassium and calcium solutions. It is shown that the elastic shear modulus increases with increasing pure KCl concentration, but decreases with increasing pure CaCl2 concentration. In mixed salts, gelation of κ-car is induced by potassium and addition of CaCl2 leads to an increase of the elastic modulus with increasing CaCl2 concentration. κ-Car gelled at low mixed salt concentrations for which it remained liquid in pure salt. At equivalent ionic strengths, the effect of adding NaCl on potassium induced gelation is much weaker. In pure KCl solutions, κ-car gels are transparent, but in pure CaCl2 they become increasingly turbid with increasing CaCl2 concentration. The turbidity of gels formed in mixed salts is intermediate. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/25129710/Synergistic_effects_of_mixed_salt_on_the_gelation_of_κ_carrageenan_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(14)00518-9 DB - PRIME DP - Unbound Medicine ER -