North American Fruit Explorers mailing list at ibiblio

[Hans Brinkmann <hans-brinkmann@t-online.de>]

Hallo Doug,
the common Sorbus aucuparia is containing Parasorbinacid.
This makes the fruits very bitter. It is considered little poisonous 
(LD_50 - 750 mg/kg for mouse).
But it is converted completely  by cooking into Sorbinacid.
S. aucuparia varieties/hybrids for consumption are not bitter and do not 
contain this Parasorbinacid.
S. domestica is not containing this Parasorbinacid (sometimes stated as 
little carcinogen).

Elderberries are also poisonous, before they are cooked.

S. aucuparia is distributed till Finland and Siberia. Small berries. 
Berries must be picked.
S.domestica is distributed naturally from the middle of Germany till 
Kaukasus and Krim.
Large berries like little apples or pears. 300 to 500kg per (old) tree. 
Easy harvest - collecting from ground.

http://www.pfaf.org/database/plants.php?Sorbus+domestica
http://www.iec.es/institucio/societats/ICHistoriaNatural/Bages/roureda/Imatges%20grans/oller_9.htm


Hans Brinkmann
Germany, Cold Zone 6


dwoodard@becon.org schrieb:
> Hans, some years ago I encountered statements that the fruits of Sorbus 
> aucuparia at least, contained a carcinogen. Do you have any information 
> about whether this is the case with Sorbus domestica?
>
> What is the difference between Sorbus aucuparia and Sorbus domestica?
> What are their respective origins?
>
> Doug Woodard
> St. Catharines, Ontario, Canada
>
>
> On Sat, 6 Jan 2007, Hans Brinkmann wrote:
>
>   
> > Hallo Lon,
> > people who are interested in S. domestica are very rare...
> > People who have such a nice homepage and experience like you are
> > extremely rare!!!
> > Regards also from Clive Simms from England!
> >
> > Yes the astringency is lost at a special time by it selves. Anyhow this
> > astringency is also necessary and positive for the apple-wine
> > production. The fruits are used also more and more in the fine cuisine
> > cooking. Even as dessert and ice cream. The tree is very useful for
> > landscaping and environmental purposes.
> > The wood is really nice and very, very high priced because it is very
> > much used in music-instrument, expensive furniture and e.g. ruler
> > production; because the wood is not shrinking and expanding like other
> > wood! I try to send you an interesting photo directly to your e-mail
> > address.
> >
> > The grafting is not secret at all, but I think in many countries this
> > Sorbus domestica is not known and people do not have any experience.
> > The rootstock can be Crataegus monog. or Sorbus domestica! Never try S.
> > aucuparia.
> >
> >     
> [snip]
>
>   
> > ciao
> > hans
> >     
>
> [snip]
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