Modified starch is an important part of starch deep-processing products. Although its industrial production in China has only a history of more than 1 years, it has developed very rapidly. According to the statistics of China Dianxie Modified Starch Professional Committee, the total amount of modified starch produced and sold nationwide in 1994 was 59,8 tons, of which about 3, tons were produced with cassava starch as raw material, accounting for 5.2%. By 1997, the total amount of modified starch produced and sold nationwide had reached more than 2, tons. It is estimated that the total production and sales of modified starch in China will reach 35, tons in 2 and exceed 1 million tons in 21. The production of modified starch will become the main pillar of starch industry and fine chemical industry.

modified starch is a new raw material in many industrial sectors. For example, in the textile industry, modified starch is used to replace vinyl size to form a new size that does not pollute the environment and is harmless to human body. Another example is the paper and paper products industry. Using modified starch as various additives, sizing agents and binders can improve the internal and surface quality of paper and improve the printing performance. Modified starch has become the third largest raw material in paper industry. In addition, in the food industry, aquatic beverage industry, building materials industry, etc., the use of modified starch is gradually popularized, and the use surface and usage are expanding day by day. Popularizing the use of modified starch will promote the technical progress and product development of related industries.

Modified starch is the raw starch (also known as natural starch) as the main raw material, which is modified by chemical method, physical method or biological method to change the physical and chemical characteristics of raw starch. At present, more than 1 million tons of modified starch products in the world are produced by chemical methods, accounting for about 8%; Physical method accounts for about 14%, and the rest is produced by biological method. Of the 2, tons of modified starch produced in China in 1997, 72% were produced by chemical method, 2% by physical method and 8% by biological method.