Mr. Julien, There are at least 30 antibiotic substances
known that could be produced by an A.versicolor, but
that production also depends on the environment where
the fungus is growing. A natural products chemist
could determine whether any of these toxic compounds
are present at your site, and a toxicologist would be best
able to determine the risk of exposure to the compounds,
depending on which ones are present and how much of them.
Just briefly I see averantin, averythrin, sterigmatin and
sterigmatocystin, cyclopiazonic acid, and others listed
as potential products. Depending on where you want to
go with this, you have some very good fungal
taxonomists and chemists at your federal "Agriculture
and Agri-Food Canada" offices in Ottawa. You should easily be able
to locate their web site URL, which I do not have here at home.
The task of that office is, of course, to insure that toxins do not
enter the food supply. I have spoken with a Dr. Keith Seifert, who
is a fungal taxonomist with the group. He might be able to direct
you to an office better able to assist you in Quebec.
On Thu, 12 Jul 2001 06:47:53 -0400, Marcel JULIEN
<marcel-julien at sympatico.ca> wrote:
>>I'm a engineer practicing in the Province of Quebec. When I was doing an
>expertise in a client¹s house I found fungus and from the analyze we found
>that the fungus was aspergillus versicolor - ufc/g > 30 x10exp6.
>>I would welcome informations and researches about the toxicity of this
>I thank you in advance for your informations des informations
>>Marcel Julien, ing
>5277, boul. Couture
>Canada HIR IC9