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arctostaphylos_uva-ursi_l._spreng

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arctostaphylos_uva-ursi_l._spreng [2014/06/20 15:06]
andreas 		arctostaphylos_uva-ursi_l._spreng [2014/06/20 15:07]
andreas
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 Mat-forming evergreen shrub with rooting branches, 20-60cm high; leaves alternate, obovate to spatulate, leathery, both sides dark green, margins not revolute, lower side of leaves with reticulate venation (leaves of  the similar Vaccinium vitis-idaea with oil dots on this side); jug-shaped, nearly globular flowers, white tinged with pink; inflorecence a  raceme; fruits are globular, glossy red berries. Mat-forming evergreen shrub with rooting branches, 20-60cm high; leaves alternate, obovate to spatulate, leathery, both sides dark green, margins not revolute, lower side of leaves with reticulate venation (leaves of  the similar Vaccinium vitis-idaea with oil dots on this side); jug-shaped, nearly globular flowers, white tinged with pink; inflorecence a  raceme; fruits are globular, glossy red berries.
  
-**Arctostaphylos uva-ursi leaves**, bearberry leaves, Folia uvae ursi, Uvae ursi folium, Bärentraubenblaetter [Hager, Wichtl, DAB10Ko, BI, BHP83, CRC] \\+**Arctostaphylos uva-ursi leaves**, bearberry leaves, Folia uvae ursi, Uvae ursi folium, Bärentraubenblaetter \\ [Hager, Wichtl, DAB10Ko, BI, BHP83, CRC] \\
 Definition. Fast dried leaves of Arctostaphylos uva-ursi, collected in winter or spring. The obovate to spatulate leaves with shiny dark green to yellow-green upper surface own a astringent and slightly bitter taste. \\ Definition. Fast dried leaves of Arctostaphylos uva-ursi, collected in winter or spring. The obovate to spatulate leaves with shiny dark green to yellow-green upper surface own a astringent and slightly bitter taste. \\
 Constituents. Phenolic glucosides, mainly [[http://de.wikipedia.org/wiki/Arbutin|arbutin]] (the glucoside of hydroquinone, 4-12% or even more) and methylarbutin (0-2.5%), as well as traces of piceoside (salinigrin, p-hydroxyacetophenone-D-glucoside), esters (at position 2 and 4 of the sugar) of arbutin with gallic acid. Sometimes also traces of free hydroquinone can be found. The drug is rich in tannin (10-40% reported), mostly derived from gallic acid and thus hydrolizable. Further constituents are flavanol glycosides like hyperoside (0.8-1.5%), quercitrin, isoquercitrin and myricitrin, free gallic, quinic and ursolic acid, and allantoin. [DAB10Ko; Hager; CRC; Wichtl; Thieme H, Winkler HJ, Pharmazie, 26, (1978), 235-43; Karikas GA, Euerby MR, Waigh RD, Planta Med., 53, (1987), 307-8;  Britton G, Haslam E, J. Chem. Soc., (1965), 7312-19; Herrmann K, Arch. Pharm. (Weinheim), 286, (1953), 515-523;  Waehner CH, Schoenert J, Friedrich H, Pharmazie, 29, (1974), 616] \\ Constituents. Phenolic glucosides, mainly [[http://de.wikipedia.org/wiki/Arbutin|arbutin]] (the glucoside of hydroquinone, 4-12% or even more) and methylarbutin (0-2.5%), as well as traces of piceoside (salinigrin, p-hydroxyacetophenone-D-glucoside), esters (at position 2 and 4 of the sugar) of arbutin with gallic acid. Sometimes also traces of free hydroquinone can be found. The drug is rich in tannin (10-40% reported), mostly derived from gallic acid and thus hydrolizable. Further constituents are flavanol glycosides like hyperoside (0.8-1.5%), quercitrin, isoquercitrin and myricitrin, free gallic, quinic and ursolic acid, and allantoin. [DAB10Ko; Hager; CRC; Wichtl; Thieme H, Winkler HJ, Pharmazie, 26, (1978), 235-43; Karikas GA, Euerby MR, Waigh RD, Planta Med., 53, (1987), 307-8;  Britton G, Haslam E, J. Chem. Soc., (1965), 7312-19; Herrmann K, Arch. Pharm. (Weinheim), 286, (1953), 515-523;  Waehner CH, Schoenert J, Friedrich H, Pharmazie, 29, (1974), 616] \\
arctostaphylos_uva-ursi_l._spreng.txt · Zuletzt geändert: 2017/09/09 10:53 von andreas

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