Useful and therapeutic properties of Polygonum zmeinyi ( coil , crayfish )
family Polygonaceae - Polygonaceae
generic name in Greek means mnogokolenchaty as many plants of this kind of expanded stem at the nodes.Species definition is translated from Latin means double-stranded (in the form of rhizomes).Hence, the Russian name - coil.Crayfish plant called because of the similarity of the rhizomes with the "tail" of cancer.
Botanical description.Perennial herb, with double-twisted rhizome in the form of the Latin letter «S», from which thin adventitious roots depart.The upper part is lifted and becomes erect stem height of 100 cm. Fistular stems, expanded nodes.Leaves are alternate, oblong-lanceolate, lower - with winged petioles, upper - sessile with filmy bells.The latter, like all plants of buckwheat, are formed on the two stipules, which are fused together into a tube surrounding the stem above the node.Flowers pink, gathered at the top of the stem in a cylindrical spike inflorescence with short stalks.Perianth almost to the base quinquepartite, neopadayuschy.8 stamens wit
Blossoms in May - June;fruits ripen in June - July.During flowering meadow plants takes a pink background.
Geographical distribution.It grows in flood plains and meadows outside the flood plains of rivers, grassy marshes, wetlands along the banks of ponds, forest edges, among the bushes.Distributed in the forest belt of the Soviet Union almost all of its territory.The main areas of blanks - Belarus, Ukraine, Sverdlovsk, Perm and Vologda Oblast, RSFSR.
the Caucasus grows closer view - knotweed red meat - Polygonum carneum S. Koch, which is used interchangeably with mountaineer snake..
collection and drying.Harvest rhizomes coil immediately after flowering until the first mowing.They dig with shovels, shake off the ground, cut or break off the stem, carefully cleaned from the roots, dry leaf scales and wash.To save the thickets at the blank left 1-2 instance in the area of 10 sq.m. The alternation of blanks produced in 8-10 years.
Raw materials should be dried quickly, to not oxidized tannins and rhizomes inside does not turn brown.In good sunny weather can be dried in the sun, laying a thin layer and turning daily, in attics, under a tin roof, but even better in the ovens.
medicinal raw materials.Rhizome coil (Rhizoma Bistortae) - solid, serpentine curved, cylindrical or flattened in cross-section, and then the top is often fluted with numerous transverse scars, and on the lower side with annular scars - traces of the cut roots.Outside, the rhizome is dark, reddish-brown, in the fracture pink or brownish-pink.Browned and blackened inside rhizomes are unsuitable for use.The smell is not present, strongly astringent taste.A decoction of the rhizomes of 1: 10 to give a solution of ferric alum black and blue color.
Art.GF 580 X admits a moisture content of not more than 13%;Ash not more than 10%;rhizomes, blackened in the fracture, not more than 10%;poorly treated from the roots, stems and leaves residues of not more than 5%;Organic impurities are not more than 0.5%;mineral impurities are not more than 1%;tannins at least 15%.
chemical composition.The rhizomes contain up to 25% mainly gidroliauemyh tannins, gallic and free ellagic acid, catechins, flavonoids, and other oksimetilantrahinony.
action and application.Tannins partially precipitated proteins, forming a dense albuminates.In the mucosa with the formation of a film that protects the end of the sensory nerve irritation, so the feeling of pain diminishes.The consequence of binder action is narrowing of the blood vessels, reducing their permeability and exudation reduction.All this leads to a decrease in the inflammatory response.
Tannins possess antimicrobial activity, which is associated with the deposition of cytoplasmic proteins of microorganisms.Recently indicate tannins antitumor activity not only the coil but also to other plants.
Prepare a decoction of rhizomes coil ('20 raw material per 200 ml of water) to rinse with stomatitis, gingivitis and other oral diseases;Assign inside of 1 tablespoon 3-4 times a day before meals with non-dysenteric diarrhea origin, acute and chronic bowel diseases.
coil is not toxic, but long-term use inside causes constipation.