Food-grade magnesium stearate, an important food additive, has the chemical formula MgCH3(CH2)16COO2 and is also known as magnesium octadecanoate. It is a white, fine, non-sandy powder with a slight odor (or described as slightly peculiar odor, odorless and tasteless), and feels slippery when in contact with skin. Magnesium stearate is insoluble in water, ethanol, and ether, but soluble in hot water and hot ethanol. It decomposes into stearic acid and the corresponding magnesium salt when exposed to acids.

　　I. Applications of Food-Grade Magnesium Stearate

　　Food-grade magnesium stearate has wide applications in the food industry. It is often used as an emulsifier, anticaking agent, and coating agent, widely added in the production and processing of candies, candied fruits, pastries, chewing gum, and some dairy products. These applications make the color and smell of food more natural and beautiful, and also play a preservative role, helping to extend the shelf life of food.

　　II. Physiological Effects of Food-Grade Magnesium Stearate

　　Magnesium stearate can produce certain physiological effects in the human body. Under the action of gastric juice, it can generate stearic acid and magnesium chloride, both of which are essentially harmless to the human body. In addition, magnesium stearate can act as a lubricant in the body, accelerating gastrointestinal motility, thereby improving digestion and appetite. However, excessive intake of magnesium stearate may cause gastrointestinal discomfort, such as bloating and diarrhea. Therefore, the amount of magnesium stearate added to food needs to be strictly controlled.

　　III. Safety and Compliance of Food-Grade Magnesium Stearate

　　The safety of food-grade magnesium stearate is widely recognized. However, to ensure its safety and compliance, various countries have established corresponding standards and regulations. In China, the production and use of food additive magnesium stearate must follow the GB1886.91-2016 standard. This standard specifies the sensory requirements, physicochemical indicators, and testing methods of magnesium stearate, ensuring the quality and safety of food-grade magnesium stearate.

　　IV. Market Price of Food-Grade Magnesium Stearate

　　The market price of food-grade magnesium stearate varies depending on factors such as brand, origin, and purity. Generally, its price is relatively stable, but it will also be affected by market supply and demand. Consumers can choose suitable products based on their needs and budget when purchasing.

　　In summary, food-grade magnesium stearate, as an important food additive, has wide applications in the food industry. Its safety and compliance are widely recognized, but its usage needs to be strictly controlled to ensure food safety. When selecting and using food-grade magnesium stearate, consumers should pay attention to factors such as brand, origin, and purity to ensure its quality and safety.