%0 Journal Article %1 DRAGET1994 %A DRAGET, K. I. %A BRAEK, G. S. %A SMIDSROD, O. %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB %D 1994 %I ELSEVIER SCI LTD %J Carbohydr. Polym. %K ;; [ISI:] poly(1,4-hexuronates); state %N 1 %P 31 -- 38 %T ALGINIC ACID GELS - THE EFFECT OF ALGINATE CHEMICAL-COMPOSITION AND MOLECULAR-WEIGHT %V 25 %X The effect of chemical composition and sequence and molecular weight of different alginate samples on the final properties of alginic acid gels have been studied. It is shown that alginates with a high content of guluronic acid blocks give gels of a considerably higher strength compared to alginates rich in mannuronate. A high fraction of homopolymeric blocks seems to favour the formation of junction zones. Compared to Ca-alginate gels, a more extended molecular weight dependent regime is observed. Kinetic measurements show an initially rapid (similar to 30 min) sol-gel transition with an apparent equilibrium in the dynamic storage moduli gradually obtained within 24-48 h, depending on the chemical composition of the alginate sample used. Mechanical spectroscopy reveals gels with a high degree of solid-like nature, with an increasing frequency dependence with decreasing molecular weight.

@article{DRAGET1994, __markedentry = {[phpts:6]}, abstract = {The effect of chemical composition and sequence and molecular weight of different alginate samples on the final properties of alginic acid gels have been studied. It is shown that alginates with a high content of guluronic acid blocks give gels of a considerably higher strength compared to alginates rich in mannuronate. A high fraction of homopolymeric blocks seems to favour the formation of junction zones. Compared to Ca-alginate gels, a more extended molecular weight dependent regime is observed. Kinetic measurements show an initially rapid (similar to 30 min) sol-gel transition with an apparent equilibrium in the dynamic storage moduli gradually obtained within 24-48 h, depending on the chemical composition of the alginate sample used. Mechanical spectroscopy reveals gels with a high degree of solid-like nature, with an increasing frequency dependence with decreasing molecular weight.}, added-at = {2011-11-04T13:47:04.000+0100}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB}, author = {DRAGET, K. I. and BRAEK, G. S. and SMIDSROD, O.}, biburl = {https://www.bibsonomy.org/bibtex/24988516e2c632ec65c635ad58c801fe2/pawelsikorski}, citedref = {ATKINS EDT, 1971, J POLYM SCI POL LETT, V9, P311 ; GRASDALEN H, 1983, CARBOHYD RES, V118, P255 ; HAUG A, 1962, ACTA CHEM SCAND, V16, P1569 ; HAUG A, 1963, ACTA CHEM SCAND, V17, P1653 ; HAUG A, 1964, THESIS NORWEGIAN I T ; HAUG A, 1967, ACTA CHEM SCAND, V21, P768 ; KING AH, 1983, FOOD HYDROCOLLOIDS, P115 ; MARTINSEN A, 1989, BIOTECHNOL BIOENG, V33, P79 ; MARTINSEN A, 1991, CARBOHYD POLYM, V15, P171 ; MYKLESTAD S, 1966, 5TH P INT SEAW S, P297 ; PAINTER TJ, 1983, POLYSACCHARIDES, V2, P195 ; SKJAKBRAEK G, 1989, CARBOHYD POLYM, V10, P31 ; SMIDSROD O, 1970, CARBOHYD RES, V13, P359 ; SMIDSROD O, 1972, ACTA CHEM SCAND, V26, P71 ; SMIDSROD O, 1972, ACTA CHEM SCAND, V26, P79 ; SMIDSROD O, 1973, CARBOHYD RES, V27, P107 ; SMIDSROD O, 1990, TRENDS BIOTECHNOL, V8, P71 ; STOKKE BT, 1991, MACROMOLECULES, V24, P4637}, interhash = {40e8d1cf7dbe4a220643020460b6bee9}, intrahash = {4988516e2c632ec65c635ad58c801fe2}, isifile-dt = {Article}, isifile-ga = {PV258}, isifile-j9 = {CARBOHYD POLYM}, isifile-nr = {18}, isifile-pi = {OXFORD}, isifile-rp = {DRAGET, KI, UNIV TRONDHEIM,NORWEGIAN INST TECHNOL,DEPT ; BIOTECHNOL,NORWEGIAN BIOPOLMER LAB,N-7034 TRONDHEIM,NORWAY.}, isifile-sc = {Chemistry, Applied; Chemistry, Organic; Polymer Science}, isifile-tc = {58}, issn = {0144-8617}, journal = {Carbohydr. Polym.}, keywords = {;; [ISI:] poly(1,4-hexuronates); state}, language = {English}, number = 1, owner = {phpts}, pages = {31 -- 38}, publisher = {ELSEVIER SCI LTD}, size = {8 p.}, sourceid = {ISI:A1994PV25800005}, timestamp = {2011-11-04T13:47:09.000+0100}, title = {ALGINIC ACID GELS - THE EFFECT OF ALGINATE CHEMICAL-COMPOSITION AND MOLECULAR-WEIGHT}, volume = 25, year = 1994 }