Rubber powder is actually starch, and there is no difference between the two. Raw flour, water starch and starch are actually the same material, namely starch. Common starches include corn starch, wheat starch and potato starch.
Starch refers to the starch made of sweet potato, which is called raw starch in Guangdong and high-grade starch because of its high viscosity, and starch or starch in the mainland. Only super seafood or delicate and expensive ingredients can use starch.
Starch is a kind of high molecular carbohydrate, which is polymerized by glucose molecules. Its basic unit is α-D- glucopyranose, and its molecular formula is (C6H 10O5.
)n .
There are two types of starch: amylose and amylopectin. The former has a spiral structure without branches. The latter consists of 24~30 glucose residues connected end to end by α- 1, 4- glycosidic bond, and the branch is α- 1, 6- glycosidic bond.
Starch used for thickening, also known as dough powder, is a polysaccharide polymer concentrated by multiple glucose molecules. Cooking starch mainly includes mung bean starch, cassava starch, sweet potato starch, sweet potato starch, potato starch, wheat starch, water chestnut starch, lotus root starch, corn starch and so on.
Because starch and water will gelatinize into colloidal solution when heated to 60℃, this characteristic can protect the nutrition of food and increase the flavor of ingredients. After the starch is cooked and diluted, add other seasonings and pour it on the food, which is fragrant and delicious.