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sorbus_aucuparia_l

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Sorbus aucuparia L. - Rosaceae - (European) mountain ash, rowan, Vogelbeere, Eberesche

Deciduous tree or shrub, up to 15m high, native to Europe and northern Asia; bark smooth; leaves pinnate; corymbs of many white flowers; fruit globose, 6-10mm diam., red or orange.

„Fruit of S. aucuparia were used in the past to lure and catch birds… The fruit contain sorbitol, which can be used as a sugar substitute by diabetics, but its production is no longer relevant… Fresh fruit are usually unpalatable, but they can be debittered and made into compote, jelly, jam, a tangy syrup, a tart chutney, or juice, as well as wine and liqueur, or used for tea or to make flour.“ https://en.wikipedia.org/wiki/Sorbus_aucuparia

The bitter principle of S.aucuparia growing in the wild is mainly parasorbic acid (5,6-Dihydro-6-methyl-2H-pyran-2-on), the intramolecular lactone of sorbic acid. Is is converted to sorbic acid by cooking of the fruits.
http://de.wikipedia.org/wiki/Vogelbeere
[Ueber das flüchtige Oel der Vogelbeeren, die Parasorbinsäure und ihre Isomerie mit der Sorbinsäure., Doebner, O., Berichte der deutschen chemischen Gesellschaft, Vol.27(1), 1894, 344-351]

The cultivated S.aucuparia var.edulis owns non-bitter berries with more ascorbic acid: „An edible variety, named Sorbus aucuparia var. dulcis Kraetzl, or var. edulis Dieck, or var. moravica Dippel, was first discovered in 1810 near Ostružná in the Hrubý Jeseník mountain range of Northern Moravia and became widespread in Germany and Austria the early 20th century. Its leaves are larger and pointed, only the front part of the leaflets is serrated, and they have darker bark, larger buds and larger fruit. Similar non-bitter varieties found in Southern Russia were first introduced in Central Europe in 1900 as 'Rossica' and 'Rossica Major', which has large fruit up to 1.5 cm in diameter.“ http://de.wikipedia.org/wiki/Vogelbeere

upload.wikimedia.org_wikipedia_commons_9_94_illustration_sorbus_aucuparia0.jpg

sorbus_aucuparia_l.1420291168.txt.gz · Zuletzt geändert: 2015/01/03 14:19 von andreas