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frangula_alnus_mill [2018/02/14 11:49]
andreas |
frangula_alnus_mill [2018/02/14 11:50]
andreas |
| "The bark (and to a lesser extent the fruit) has been used as a laxative, due to its 3 - 7% anthraquinone content. Bark for medicinal use is dried and stored for a year before use, as fresh bark is violently purgative; even dried bark can be dangerous if taken in excess." [[http://en.wikipedia.org/wiki/Rhamnus_frangula]] | "The bark (and to a lesser extent the fruit) has been used as a laxative, due to its 3 - 7% anthraquinone content. Bark for medicinal use is dried and stored for a year before use, as fresh bark is violently purgative; even dried bark can be dangerous if taken in excess." [[http://en.wikipedia.org/wiki/Rhamnus_frangula]] |
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| The unpleasant smelling (german name "Faulbaum", rotting tree) wood brakes easily, hence the latin name "Frangula" from "frangere" = to brake. In spring the bark is most readily seperated from the twigs and then air-dried during one year or heated for some hours to convert anthrones to anthraquinones. The dried bark contains up to 8% of 1,8-antraquinones mostly glycosidically bound. Important compounds are glucofrangulines A and B, as well as the frangulines A and B (during storage increasingly emerging), all of which derived from the same aglycon, frangulaemodin. There are also small amounts of chrysophanol, physcion and dianthrones as glycosides. [Kommentar zum DAB 10, 3.NT 1994, 1996, F 5] | The unpleasant smelling (german name "Faulbaum", rotting tree) wood brakes easily, hence the latin name "Frangula" from "frangere" = to brake. In spring the bark is most readily seperated from the twigs and then air-dried during one year or heated for some hours to convert anthrones to anthraquinones. The dried bark contains up to 8% of 1,8-antraquinones mostly glycosidically bound. Important compounds are glucofrangulines A and B, as well as the frangulines A and B (during storage increasingly emerging), all of which derived from the same aglycon, frangulaemodin. There are also small amounts of chrysophanol, physcion and dianthrones as glycosides. \\ [Kommentar zum DAB 10, 3.NT 1994, 1996, F 5] |
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| {{:rhamnus_frangula.jpg?600}} \\ | {{:rhamnus_frangula.jpg?600}} \\ |
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| {{http://www.botanische-spaziergaenge.at/Bilder/Konica_4/PICT2951.JPG}} \\ Frangula alnus, Wien, Donauinsel © Rolf Marschner (2007), [[http://botanische-spaziergaenge.at/viewtopic.php?f=421&t=1339]] | {{http://www.botanische-spaziergaenge.at/Bilder/Konica_4/PICT2951.JPG}} \\ Frangula alnus, Wien - Donauinsel © Rolf Marschner (2007) [[http://botanische-spaziergaenge.at/viewtopic.php?f=421&t=1339]] |
