GreenFresh Hydrocolloids as the, . The color is generally white or light yellow powder, odorless and tasteless. Carrageenan has good water solubility, and can be completely dissolved at 80C to form a thermally reversible gel, that is, the gel is heated to melt into a solution, and the gel can be formed when the solution is cooled. AGAR AGAR The scientific name agar is a hydrophilic colloid, which is available in powder and strips. It is insoluble in cold water and easily soluble in hot water. The agar color ranges from white to light yellow, with a gel texture, odorless or slightly marine odor. The US Food and Drug Administration lists agar as a generally recognized as safe product (GRAS). KONJAC GUM/FLOUR Konjac (Latin name: Amorphophallus konjac) is a plant of the genus Amorphophallus, Araceae and a perennial tuber herbal plant. The konjac gum is a high-molecular jelly amylose extracted from the tubers of various types of konjacs. Its main ingredient is glucomannan (KGM). Konjac gum contains rich water-soluble edible fibers, microelements and 16 amino acids and is low-heat, low-protein and low-fat.