Physiological activity
1, control cholesterol
One of the biggest problems of human health is cholesterol, which causes many serious diseases. Chitosan has two mechanisms to reduce cholesterol. One is to prevent the absorption of fat, the other is the bodys blood cholesterol excreted. First, the chitosan that help inhibit the absorption of fat lipase. Lipase breaks down fat to be absorbed by the body. Another is the excretion of bile acids. Once the bile acid excretion, the blood cholesterol is used to make acid. Both of these mechanisms makes chitosan a strong cholesterol scavenger. There are also some other cholesterol scavengers, such as cholestyramine (cholestyramine) and hydrochloric acid drop Danning (cholestipol HCL). But these not only inhibit the excretion of bile acids and cholesterol, and constipation and gastrointestinal disorders side effects. Chitosan is a natural material, with a strong anion adsorption, for lowering cholesterol without any side effects.
 2, inhibition of bacterial activity
Chitosan in weak acid easily dissolves in the solvent, the solution of particular amino (NH2). By combining these amino electronics to suppress negative bacteria. Chitosan inhibit bacterial activity, so in the pharmaceutical, textile and food and other fields have a wide range of applications.
 3, the prevention and control of hypertension
Of the most influential factor in high blood pressure is one chloride ion (cl-). It is usually by salt intake. Recently, many people are spending too much salt. Angiotensin-converting enzyme (ACE: Angiotensin Converting Enzyme) produced angiotensin II, a cause vasoconstriction of the material, its vitality from the chloride ion. The same polymer chitosan as the role of dietary fiber, not absorbed in the intestines. Chitosan through its own and ammonia chloride ions between the adsorption of chloride excretion. Therefore, chitosan reduces angiotensin II. It helps prevent high blood pressure, excessive intake of salt, especially those people.
 4, absorption and excretion of heavy metals
A significant feature of chitosan is the adsorption capacity. Many low molecular weight materials, such as metal ions, cholesterol, triglycerides, bile acids and organic mercury, Chitosan can be adsorbed. In particular, chitosan can absorb not only magnesium, potassium, and can absorb zinc, calcium, mercury and uranium. The adsorption of chitosan can be selectively activated to play a role. The concentration of metal ions in the body too much is harmful. For example, the blood copper ions (Cu2) will lead to high concentrations of copper poisoning, and even carcinogenic effects. Chitosan has been proven highly effective chelate media. Adsorption capacity of chitosan depends on its degree of deacetylation. The greater the degree of deacetylation, the stronger the adsorption capacity.