Goma Guar

These Goma Guar is a polysaccharide which in water gives hexose sugar, mannose and galactose. These hexose sugars are soluble both in cold and hot water but it is insoluble in most of the organic solvents. In water it gives high viscosity even used small quantity. Strong acids cause hydrolysis and loss of viscosity; alkalies in strong concentration also tend to reduce the viscosity. Adding borax solution will form a gelatinous mass. Guar gum is compatible with starch, alginate, agar etc.
It is easily soluble in both hot and cold water.
Properties of film forming.
Remains stable in solution over wide range of pH values from
5-7.
Good thickening agent.
High viscosity.
Resistance to oils, greases and solvent.
Capacity of Water binding.
Functioning at low temperatures.
Compatible with many other hydrocolloids used in food
formulations.
Versatility due to number of free hydroxy groups to
make derivatives for specific applications.

Among various natural agro products, guar gum occupies a very important place, as it is a rich source of high quality galactomannan polysaccharide. Guar Gum is extracted from guar seeds grown in a plant about 4 feet high known as guar plant. This guar plant is grown in India and Pakistan sown in July and harvested in October. The seeds from this plant are allowed to dry in sun. After drying the seeds in the sun, they are separated and processed into a flour which is known as guar gum powder.