1. Functional food from Chinese herbal medicine
Ginseng is one of the earliest health care products that people know and use. Because of its extensive and magical effect, a lot of in-depth research on ginseng has been done at home and abroad. Ginseng contains saponins, sugars, proteins, low molecular peptides, polyamines, amino acids, organic acids, vitamins, fatty acids, pectins, β - sitosterol and other components, of which ginsenoside is the main effective component. Many studies have shown that both ginseng and ginsenoside can promote learning and improve memory function, anti-tumor, improve immune function, antioxidation, reduce blood sugar, improve sexual function and so on.
Lycium barbarum polysaccharide is the main active component of Lycium barbarum, which has many pharmacological and biological functions. It is a hot spot in the current research of Lycium barbarum. In recent decades, the research of clinical medicine on Lycium barbarum polysaccharide mostly focuses on the pharmacological action and the extraction, separation, purification and detection of Lycium barbarum polysaccharide. Clinical medicine research shows that Lycium barbarum polysaccharide can not only enhance the immune ability of human body, It can regulate the immune function of human body, reduce blood sugar, blood fat, protect liver, anti - aging and anti - tumor
2. Functional food from fruits and vegetables
Proanthocyanidina, a flavonoid component in grape and wine, has excellent antioxidant activity and plays an important role in the prevention of cardiovascular and cerebrovascular diseases. It is the most representative bioactive substance in grape. Tomato is a very important vegetable in people's diet. Its main bioactive substance is lycopene. Lycopene has a strong antioxidant activity, which makes it play an important role in many functional foods whose main function is antioxidant. In addition, the preventive effect of lycopene on some tumors, such as gastrointestinal cancer, prostate cancer, cervical cancer, breast cancer and so on, makes it a very important functional factor.


3. Functional food from tea and spices
China has a tradition of tea health care since ancient times. At present, tea beverage has become one of the three largest drinks in the world. Tea polyphenols (TP), the main bioactive substance in tea, is a hydroxyphenol compound with catechins as the main body. It can effectively eliminate free radicals, prevent lipid peroxidation, and thus play a role in protecting cardio cerebral vessels, preventing tumors and delaying aging. Gingerol has significant antioxidant effect, which is stronger than vitamin E and butylhydroxygenin. It can clear the hydroxyl free radical, superoxide free radical and hydroxygenin in organism, clear the light radical free radical and superoxide free radical in organism, and reduce the lipid peroxide in liver and brain tissue. These antioxidative effects are related to the phenolic structure and β - hydroxyketone structure of gingerol.

