Tags

Type your tag names separated by a space and hit enter

Effect of extraction parameters on the chemical structure and gel properties of kappa/iota-hybrid carrageenans obtained from Mastocarpus stellatus.
Biomol Eng. 2006 Sep; 23(4):201-8.BE

Abstract

Extraction parameters (temperature, pH, duration) and alkaline pre-treatment duration have been systematically varied in the aim of exploring their impact on both chemical structure and gelling properties of carrageenan biopolymers obtained from Mastocarpus stellatus seaweeds, collected on the Northern coast of Portugal. Increasing the alkaline pre-treatment duration PT leads to kappa/iota-hybrid carrageenans containing less sulphate groups and biological precursor monomers. As a result, gel properties in the presence of KCl are improved as demonstrated by the increase in the Young's modulus with parameter PT. Increasing the extraction duration t ameliorates the biopolymer yield with no significant change in the complex kappa/iota-hybrid carrageenan chemical structure. However, smaller molecular weights are obtained and gel properties are seen to be negatively affected. Extraction temperature and pH have dramatic effects on the biopolymer gel strength, and a set of extraction parameters optimized with respect to extraction yield and gel properties is reported. In addition, kappa/iota-hybrid carrageenans obtained throughout this study exhibit a wide range of gel strengths in KCl, and allow us to present correlations between gel thermal properties and the kappa/iota-hybrid carrageenans chemical structure.

Authors+Show Affiliations

REQUIMTE-CEQUP, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, s/n 4200-465 Porto, Portugal. hilliou@fe.up.ptNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

16757212

Citation

Hilliou, L, et al. "Effect of Extraction Parameters On the Chemical Structure and Gel Properties of Kappa/iota-hybrid Carrageenans Obtained From Mastocarpus Stellatus." Biomolecular Engineering, vol. 23, no. 4, 2006, pp. 201-8.
Hilliou L, Larotonda FD, Abreu P, et al. Effect of extraction parameters on the chemical structure and gel properties of kappa/iota-hybrid carrageenans obtained from Mastocarpus stellatus. Biomol Eng. 2006;23(4):201-8.
Hilliou, L., Larotonda, F. D., Abreu, P., Ramos, A. M., Sereno, A. M., & Gonçalves, M. P. (2006). Effect of extraction parameters on the chemical structure and gel properties of kappa/iota-hybrid carrageenans obtained from Mastocarpus stellatus. Biomolecular Engineering, 23(4), 201-8.
Hilliou L, et al. Effect of Extraction Parameters On the Chemical Structure and Gel Properties of Kappa/iota-hybrid Carrageenans Obtained From Mastocarpus Stellatus. Biomol Eng. 2006;23(4):201-8. PubMed PMID: 16757212.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of extraction parameters on the chemical structure and gel properties of kappa/iota-hybrid carrageenans obtained from Mastocarpus stellatus. AU - Hilliou,L, AU - Larotonda,F D S, AU - Abreu,P, AU - Ramos,A M, AU - Sereno,A M, AU - Gonçalves,M P, Y1 - 2006/05/07/ PY - 2005/11/23/received PY - 2006/04/19/revised PY - 2006/04/24/accepted PY - 2006/6/8/pubmed PY - 2006/9/29/medline PY - 2006/6/8/entrez SP - 201 EP - 8 JF - Biomolecular engineering JO - Biomol Eng VL - 23 IS - 4 N2 - Extraction parameters (temperature, pH, duration) and alkaline pre-treatment duration have been systematically varied in the aim of exploring their impact on both chemical structure and gelling properties of carrageenan biopolymers obtained from Mastocarpus stellatus seaweeds, collected on the Northern coast of Portugal. Increasing the alkaline pre-treatment duration PT leads to kappa/iota-hybrid carrageenans containing less sulphate groups and biological precursor monomers. As a result, gel properties in the presence of KCl are improved as demonstrated by the increase in the Young's modulus with parameter PT. Increasing the extraction duration t ameliorates the biopolymer yield with no significant change in the complex kappa/iota-hybrid carrageenan chemical structure. However, smaller molecular weights are obtained and gel properties are seen to be negatively affected. Extraction temperature and pH have dramatic effects on the biopolymer gel strength, and a set of extraction parameters optimized with respect to extraction yield and gel properties is reported. In addition, kappa/iota-hybrid carrageenans obtained throughout this study exhibit a wide range of gel strengths in KCl, and allow us to present correlations between gel thermal properties and the kappa/iota-hybrid carrageenans chemical structure. SN - 1389-0344 UR - https://www.unboundmedicine.com/medline/citation/16757212/Effect_of_extraction_parameters_on_the_chemical_structure_and_gel_properties_of_kappa/iota_hybrid_carrageenans_obtained_from_Mastocarpus_stellatus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1389-0344(06)00039-6 DB - PRIME DP - Unbound Medicine ER -