Resistant starch is mainly divided into 4 categories, among which RS1 is defined as embedded starch, which is actually rough processing, forming physical entrapment and making it indigestible by the human body, that is, coarse grain. It is easy to cause damage to the gastrointestinal tract and teeth, and is one of the main reasons for the low life expectancy in the past. RS2 is natural grain starch, but the usual problem is that its molecular structure is unstable, and it will be destroyed by heat and high pressure and converted into fast-digesting high-calorie carbohydrates, the most common being potato starch. RS3 refers to aged retrograded starch, such as cold rice formed after cooling rice porridge, or waxy corn hardened after being cooked and cooled, all of which are aged retrograded. The main problem is that the crystals disintegrate after being heated and become new fast-digesting starch high-calorie carbohydrates. RS4 refers to chemical denaturation, which is not only unsafe, but the most important thing is that RS4 that can be supplied in batches has not yet been really developed.

High-amylose corn (resistance) starch belongs to grain native starch (rs2), mainly through breeding technology to increase the proportion of straight-chain molecules, forming a stable structure resistant to high temperature and high pressure, and is a high-quality raw material for low-calorie carbohydrates. Quanyin Xiangyu (Beijing) Biotechnology Co., Ltd. has mastered the core breeding technology and managed the entire industrial chain, and has achieved stable domestic supply. On the existing basis, the company has invested heavily in research and development for many years to develop new products such as K130, which belong to the RS3 category. It has achieved the effect of delicious taste, good effect and high degree of process matching.