Location: Zhejiang, Anhui, Jiangsu, Shaanxi and other places. It can be excavated all year round, with fine roots removed, washed, sliced while fresh and dried. Raw or fried with bran.
Pungent and warm in nature.
Meridian tropism: entering stomach and kidney meridian.
Efficacy: promoting qi and relieving pain, warming kidney and dispelling cold.
pharmacological action
Lindera root has a wide range of pharmacological activities, mainly as follows:
Antibacterial and antiviral effects
Zhang Tianmin and others reported that 20% of Lindera had obvious inhibitory effect on respiratory syncytial virus (RSV), coxsackie B 1, B3, B4 virus (CBV). RSV virus was the main cause of infant bronchiolitis and pneumonia, and coxsackie B virus (CBV) all had inhibition indexes of 4 logarithms, so it was a highly effective antiviral drug. The water and alcohol extracts of Lindera root also have obvious inhibitory effect on herpes simplex virus (HSV), which is also a highly effective drug. Lindera root has inhibitory effects on Staphylococcus aureus, Streptococcus hemolyticus A, Salmonella typhi, Proteus, Pseudomonas aeruginosa and Escherichia coli. In addition, fresh Lindera leaves also have antibacterial effect.
Effect on digestive system
Lindera root can increase the secretion of digestive juice and resist the abdominal pain caused by clinical application of rhubarb. The decoction of Radix Linderae can obviously increase the amplitude of gastric electricity in rabbits, and it can excite and enhance the gastric movement rhythm. The decoction of Radix Linderae can obviously inhibit the formation of ulcer, resist the cell damage induced by ethanol, and has a protective effect on cells, which is dose-dependent and has a systemic effect. The protective effect of Radix Linderae is related to nerve function.
Effects on cardiovascular system
Lindera root has an exciting effect on myocardium. Its volatile oil can excite myocardium, accelerate reflux circulation, boost blood pressure and sweat, and also excite cerebral cortex and promote respiration. Local application can dilate blood vessels, accelerate blood circulation and relieve spasmodic pain of compound muscles.
Other functions
In vitro experiments show that Lindera root can promote blood coagulation, and it is also reported that Lindera root has antithrombin effect. Lindera root has obvious inhibitory effect on sarcoma S 180 in mice. Furan sesquiterpene in Lindera root has preventive effect on experimental liver injury, which can prevent the increase of GOT and GPT caused by CCl4, and has strong inhibitory effect on the increase of serum transaminase and GOT caused by ethionine, and can protect the liver from fat infiltration. In addition, Lindera root also has antihistamine effect. It has been reported that the water and alcohol extracts of Lindera root have strong analgesic and anti-inflammatory effects, and the n-butanol fraction has the strongest analgesic and anti-inflammatory activity.