Multinuclear n.m.r. studies of group I cations in furcellaran gels.
Multinuclear n.m.r. experiments were carried out in order to study the possible selective interaction between group I cations and furcellaran. It has been shown that the intensity of the 39K, 87Rb and 133Cs spectra show a change in the vicinity of the sol-gel transition. However, the intensity of the 23Na spectrum showed no singularity at the sol-gel transition. These studies suggest that the selective interactions of the group I cations upon gelation of furcellaran resemble those observed for the structurally related kappa-carrageenan.
Tanner
S F
SF
AFRC Institute of Food Research, Norwich Laboratory, UK.
Morris
V J
VJ
Belton
P S
PS
D000464:Alginates / Q000737:chemistry*; D002586:Cesium / Q000737:chemistry; D005782:Gels; D009682:Magnetic Resonance Spectroscopy; D053149:Plant Gums; D011188:Potassium / Q000737:chemistry; D012413:Rubidium / Q000737:chemistry; D012964:Sodium / Q000737:chemistry; D013696:Temperature
D000464:Alginates; D005782:Gels; D053149:Plant Gums; D002586:Cesium; C012985:furcellaran; D012964:Sodium; D012413:Rubidium; D011188:Potassium