Action ► Dried leaves and twigs— a home remedy for coughs. Leaves—diuretic, hypotensive, refrigerant. An infusion is used for inflammatory conditions, sore throat, hoarseness. Fruits— refrigerant, mildly spasmolytic, vasoprotective, anti-inflammatory.
Black currents are very rich in vitamin C (average 150 mg/100g) and contain 0.9-1.7% pectin as calcium pec-tate, also minerals, potassium (372 mg/ 100 g). The acidity of the fruit is mainly due to citric acid; malic acid is present in small amounts. Glucose and fructose are principal sugars; sucrose is a minor component.
The flavonoids in the fruits include kaempferol, quercetin and myricetin. About 0.3% anthocyanosides, concentrated mainly in the skin, consist of glycosides ofcyanidol and delphinidol.
The anthocyanosides are reportedly bacteriostatic and exhibit vasopro-tective and anti-inflammatory activity. They are antisecretory against cholera toxin-induced intestinal fluid secretion in vitro.
The leaves contain an anti-inflammatory principle, pycnometol and minute quantities of an essential oil composed mostly of terpenes.
Polyphenolic extract of buds inhibited lipid peroxidation by rat liver mi-crosomes.
Polyphenols present in R. nigrum and R. rubrum (Red Current, Western Himalayas from Kumaon to Kashmir) exhibit free radical scavenging activity. The seed oil lowers VLDL and total cholesterol.
Contraindicated in bleeding disorders. (Sharon M. Herr.)
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