Houttuynia cordata extract quercetin isoquercetin

  Houttuynia cordata Thunb
(Latin name: Houttuynia cordata Thunb
) Dry aboveground parts of
In summer, the stems and leaves are lush, and the flowers and ears are often harvested and cut to remove impurities and dry in the sun
Characters of herbal medicine: the stem is flat cylindrical, twisted, 20 ~ 35cm long and 0
2 ~ 0
3cm in diameter; The surface is brownish yellow, with several longitudinal edges, obvious nodes, and residual fibrous roots on the lower nodes; It is brittle and easy to break
The leaves are alternate, the leaves are folded and shrunk, and are heart-shaped after flattening, with a length of 3 ~ 5cm and a width of 3 ~ 4
5cm; Apex acuminate, entire; The upper surface is dark yellowish green to dark brown, and the lower surface is grayish green or grayish brown; The petiole is slender, and the base is combined with the stipule to form a sheath
Spikes terminal, yellowish brown
It tastes fishy when crushed
Houttuynia cordata has pungent taste and cold nature
It belongs to the lung meridian
It can clear away heat and detoxification, reduce swelling and treat sore, diuresis and dehumidification, clear away heat and stop dysentery, strengthen stomach and eliminate food, and treat lung carbuncle, sore and swollen toxin, hemorrhoids, blood in stool, spleen and stomach heat caused by excess heat, heat toxin, dampness evil, disease and heat, etc
Modern pharmacological experiments show that this product has the functions of antibacterial, antiviral, improving body immunity, diuresis and so on

The aboveground part contains volatile oil and antibacterial active components decanoy acetaldehyde, lauric aldehyde, a-pinene and linalool
The first two have specific odor
It also contains methyl-n-nonylketone, camphene, myrcene, limonene, bornyl acetate and caryophyllene
Commonly referred to as Houttuynia cordata refers to the adduct of bisulfite of acetaldehyde decanoate
It also contains afzelin, hyperperin, rutin, chlorogenic acid and & beta- Sitosterol (& beta; - sitosterol), stearic acid, oleic acid, linoleic acid)
Leaves contain quercetin, flowers and ears contain ISO quercetin