The efficacy and role of Sorbus Extract: 1. Antioxidant effect The fruit Extract of Sorbus melanocarpa contains anthocyanins, caffeic acid and caffeic acid derivatives and other polyphenol compounds, all of which have strong antioxidant activity, among which cyanidin 3-O-β- D-galactoside is its main antioxidant component. 2. Anti-inflammatory effect The anthocyanin flavonoids in the fruit juice of Sorbus melanocarpa has obvious inhibitory effect on 5-hydroxyamine and histamine-induced toe swelling in rats. 3. Hypoglycemic effect The Extract of Sorbus melanocarpa can stimulate the uptake of glucose by PC12 cells and L929 cells, and significantly reduce the blood glucose levels of diabetic rats and normal rats induced by streptozotocin (STZ). In a clinical application study, it was found that after 3 months of taking S. melanocarpa fruit juice, the fasting blood glucose of patients with type 2 diabetes was significantly reduced, and the levels of glycated hemoglobin (HbA1c) Chemicalbook, lipid and total cholesterol in patients' plasma were also reduced. This indicates that the fruit of Sorbus arborescens can be used for dietary treatment of diabetic patients. 4. Hepatoprotective effect of Sorbus cirrhosa fruit juice has hepatoprotective effect on rats with acute liver injury caused by CCl4. The results of the study show that the sorrel fruit tree juice has a dose-dependent reduction in liver necrosis and increased plasma in rats The activity of glutamate transaminase and aspartate transaminase can prevent the production of malondialdehyde and the decrease of glutathione Specification in rat liver caused by CCl4. 5. Other effects The fruit Extract of Sorbus melanocarpa has a good effect on the treatment of radiation sickness and heavy metal poisoning. Polyphenols are very important substances that improve the structure and function of capillaries and blood vessels, and also help to stimulate and improve the circulatory system. Anthocyanins and flavonoids can keep the heart and urinary system healthy and improve the function of the immune system.