Gyromitra poison info?
jpirko at umich.edu
Thu Jun 5 14:38:08 EST 1997
adgrant at nospam.waterw.com (Andrew Grant) writes: > In article <33932B10.6F45 at glpbooks.SPAMBLOCK.com>,
> jp at glpbooks.SPAMBLOCK.com wrote:
> >Hi there...I'm interested in the rocket fuel toxin in the
> >Beefsteak mushroom. I've read that it's considered poisonous
> >but that millions eat it. Very strange! Can someone enlighten
> >me? ---I recall also reading that different regions have beefsteaks
> >which have LESS of the toxin, making them edible. Is this the
> >case with the commercial beefsteaks available in Scandanavia?
> >I also read awhile back about a 'controlled substance' case about
> >such a company exporting beefsteaks to the US and getting into
> >trouble. Any news? Thanks...
> I have never heard the Gyromitra called a beefsteak mushroom. That
> name is usually applied (at least in the US to Boletus edulis. Gyromitra
> esculenta is often called the false morel and contains the poison
> monomethyl hydrazine (MMA). MMA is a recognized poison. People have eaten
> these mushrooms safely after cooking because MMA is volatile, it boils at
> 87.5 C, and cooks off (at least to a large extent) during cooking. There
> have been cases where the cook became seriously ill by inhaling the vapor
> from cooking while those that ate the mushrooms did not. Note that MMA
> has been confirmed in about 6 or 8 gyromitra species and reported or
> suspected of being present in about a dozen other sorts of mushroom but so
> far as I know not including any boletus species. The "controlled
> substance" case sounds more like a hallucinogenic mushroom.
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> Andy Grant
Gyromitra esculenta is called 'beefsteak' in Northern Michigan. As always
much confusion about edibility. Half the people say yes, half say no. I
don't mess around with it.
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