The Role of Starch in Fish Feed Pet Food

Starch is the main source of carbohydrates in animal feed, which can provide energy requirements for animal growth.

Starch can be used as a diluent (or filler) in feed additive products to fill and disperse active ingredients in feed additive products to increase their weight or volume, facilitate formulation molding and dispersion, and further make powders , granules and pellets, etc.

When starch is used as diluent, corn starch is commonly used. It has very stable properties, does not work with most ingredients, and is relatively cheap. It has low hygroscopicity and good appearance and color. In actual production, it is often combined with other fillers Additives or diluents such as: calcium carbonate, corn cob powder, bran powder, etc., can further reduce the cost and use effect of the product.

Starch granules are insoluble in cold water, damaged starch or chemically modified starch is soluble in cold water, but the swelling starch after dissolution is irreversible. As the temperature rises, the expansion degree of starch increases, and the solubility increases. When the temperature continues to rise, the starch granules suddenly expand rapidly, and the volume can reach dozens or even hundreds of times of the original, and the suspension becomes a translucent viscous colloidal solution. , this phenomenon is called the gelatinization of starch, the gelatinized starch has adhesiveness, and is often used as a binder in the preparation of feed additive products