What are the differences and characteristics of pregelatinized starch and modified starch?
Pregelatinized starch and modified starch are two different products obtained after starch processing, and they have certain differences in composition, properties and applications. Pregelatinized starch is a starch that has been treated by physical or chemical methods to make it gelatinized or partially gelatinized, so that it has a certain viscosity and stability. Modified starch is to change the molecular structure or properties of starch to give it new properties or uses.
1. Pre-gelatinized starch.
Pregelatinized starch is a product in which starch is physically or chemically treated to make it gelatinized or partially gelatinized. Its main characteristics are that it has good viscosity and stability, and can be quickly dissolved in cold water, and is often used in food, pharmaceutical, cosmetics and other fields.
1.Ingredients.
Pregelatinized starch is mainly composed of starch and may contain small amounts of cellulose, hemicellulose, and other components. Its main components are basically the same as the original starch, but the molecular weight is reduced, the crystalline structure is destroyed, and it presents different properties.
2.Performance.
Pregelatinized starch has good viscosity and stability, and can be quickly dissolved in cold water to form a homogeneous solution. It also has good film-forming, transparency and thickening properties, and can be used as a thickener, stabilizer, suspending agent, etc.
3.Apply.
Pregelatinized starch is widely used in food, pharmaceutical, cosmetics and other fields. In the food industry, it can be used to make jams, canned food, ice cream and other products, as a thickener, stabilizer, suspending agent, etc.; In the pharmaceutical industry, it can be used as an adhesive for pharmaceutical preparations, coating materials, etc.; In the cosmetics industry, it can be used as a thickener, stabilizer, etc. for products such as lotions and creams.
2. Modified starch.
Modified starch is a product that modifies the molecular structure or properties of starch to give it new properties or uses. It has a wide range of applications and can be used in food, textile, papermaking, medicine and other fields.
1.Ingredients.
The composition of modified starch is similar to that of original starch, but after processing, its molecular weight and crystalline structure change, resulting in different properties and uses. According to different processing methods, modified starch can be divided into many types, such as oxidized starch, acidolyzed starch, esterified starch, etc.
2.Performance.
Modified starch has many unique properties and uses. For example, oxidized starch has good solubility and stability, and can be used to make paper, textiles, etc.; Hydrolyzed starch has good transparency and stability, and can be used to make candy, beverages, etc.; Esterified starch has good thermal stability, enzyme resistance and acid resistance, and can be used to make food packaging materials.
3.Apply.
Modified starch has a wide range of applications. In the food industry, it can be used as a thickener, stabilizer, gelling agent, etc., to make jams, candies, beverages and other products; In the textile industry, it can be used as a slurry, coating agent, etc., to improve the performance and appearance of textiles; In the paper industry, it can be used as a paper coating, paper reinforcing agent, etc., to improve the quality and appearance of paper; In the pharmaceutical industry, it can be used as an excipient for pharmaceutical preparations, capsule materials, etc.
In summary, both pre-gelatinized starch and modified starch are starch products obtained through processing, and they have certain differences in composition, performance and application. Pregelatinized starch has good viscosity and stability, and is often used in food, pharmaceutical, cosmetics and other fields; Modified starch is a product with new properties obtained by changing the molecular structure or properties of starch, and has a wide range of applications. Understanding their differences and characteristics can help to better select and apply both products.