People in the south, especially those in Guangdong and Guangxi, will be familiar with Guiling cream, while people in the North seldom eat it.   In fact, the benefits of eating Guiling cream are many. It is brewed from a variety of Chinese herbal medicines. It was used as a medicinal diet long ago. Eating it can promote metabolism, clear away heat and reduce fire, moisten the lungs and relieve cough, and can also improve beauty, nourish yin and tonify the kidney. Got sore throat, hemorrhoids, prickly heat and constipation and other diseases, eating it can also play a certain role in improving. Modern nutrition research has found that Guiling cream contains a variety of active polysaccharides and amino acids, with the characteristics of low calorie, low fat and low cholesterol, and can regulate blood lipids and blood glucose.  

    Guiling cream is black and slightly transparent. It was born prematurely in Wuzhou, Guangxi. It is a health food made of chick billed turtle and tuckahoe as the main raw materials, and then added with licorice, red jujube, mulberry leaves, honeysuckle, honey, chrysanthemum, etc. after a long time of refining. There is only one ingredient in Guiling ointment. Tuckahoe contains a very important active ingredient - astiloside. Astilbin also exists in many functional foods because many astilbin containing plants have "drug and food homology". Guiling ointment is a functional food with tuckahoe as its main raw material, which is widely popular in Guangdong, Guangxi, Hong Kong and other regions.

    So what are the pharmacological effects of astilbin? Firstly, astilbin has selective immunosuppressive effect. Normal immune response is the main mechanism for the body to maintain its own balance and resist foreign aggression. Excess immune response will cause a variety of autoimmune diseases, allergies and inflammatory reactions. Immunosuppressive drugs treat related diseases by inhibiting immune response. However, if this inhibition lacks the selectivity to cells and tissues, resulting in the overall inhibition of the immune response, it will produce serious toxic and side effects. The research group of Professor Xuqiang of Nanjing University has done a lot of research on the selective immunosuppression of astilbin and obtained many original results. Astilbin can significantly inhibit delayed type hypersensitivity, collagen arthritis and immune liver injury. Compared with cyclosporine A, the immunosuppressive effect of astilbin is more selective. Secondly, astilbin also has antioxidant effect. Astilbin has strong antioxidant ability, can effectively remove DPPH, ABTS and other free radicals and superoxide anions, and inhibit linoleic acid peroxidation. Its effect is equivalent to that of synthetic antioxidants BHA and BHT. Astilbin is expected to become a new natural food antioxidant; Petacci et al. Found that astilbin can inhibit myeloperoxidase and horseradish peroxidase activities and effectively remove hypochlorite. In the CCl4 induced liver injury model in mice, astilbin can significantly reduce liver lipid peroxidation and induce the increase of superoxide dismutase activity to protect the liver, and its effect is stronger than that of VE. In addition, there are many other important functions, such as regulating fat and cholesterol metabolism, hypoglycemic effect, bacteriostasis and insecticidal effect, inhibiting cancer cell proliferation and inducing apoptosis, promoting hair growth, etc.

    At present, China's functional food industry is booming, becoming   21  One of the new growth points of Chinese industry in the th century. Astilbin widely exists in a variety of plants, fruits and functional foods. It has "drug and food homology" and is a food ingredient that people often eat in daily life. Therefore,AstilbinNo toxic side effects or minimal. At the same time, it has many biological activities, such as lowering blood glucose, regulating fat metabolism, antioxidation and so on. These characteristics provide a prerequisite for the application of astilbin in the field of functional food. In addition, in the field of medicine, the unique selective immunosuppressive activity of astilbin has attracted increasing attention of scientists, and is expected to be developed as a new drug for the treatment of immune diseases.