Room temperature stable, non-gelling polysaccharide solutions such as
agaroses, dextrans and cyclodextrans are made by the present invention.
It has been found that by incorporating certain gel-inhibiting additives
into an aqueous polysaccharide solution, the gel point is reduced or
eliminated and the solution remains liquid at room temperature
indefinitely. Additives that have been found to work include salts, such
as lithium chloride and zinc chloride and bases, such as sodium hydroxide
and lithium hydroxide. Mixtures of said salts and said bases can also be
used with the same desired results. The composition of these solutions of
the present idea can be further modified to include other additives, such
as organic co-solvents or non-solvents, pH modifiers, surfactants or
other polymers to customize the properties of the solution to improve the
processability for the desired application and to form structures such as
films, beads and coated porous substrates.