> > > Alex,
> > > Part of my childhood was spent in the middle east where I was acclimated
[quoted text clipped - 16 lines]
> I heard that it's because birds' mouths are dry...that if they had saliva
> the capsaicins would kick in. Anybody know if that's really the reason?
From the OFFICIAL NEWSLETTER OF THE SOCIETY OF TOXICOLOGY OF CANADA,Volume
XXII Number 3, November, 2003
http://www.stcweb.ca/newsletter/volume22_no3.pdf
"...I spotted an interesting article in the science section of the GLOBE and
MAIL (Sept.6th), discussing squirrel-proof birdseed, something we really
need around here. Apparently, some scientists at the U. S. National Cancer
Institute were examining the active ingredients, capsaicins, in chili
peppers for anti-cancer activity (they were inactive) but playfully decided
to squirrel-proof a bird feeder. Capsaicins are a family of
neurotransmitterbased irritants that interact with c-afferent nociceptors on
the surface of the lips, tongue, and the inside of the mouth to release a
neurotransmitter which our brains perceive as pain and heat. The digestive
tracts of mammals are full of cafferent nociceptors, but birds do not have
such receptors and are not affected. A Canadian venture capitalist from
Napanee, Ontario, invested in the company started by the NCI people,
discovered that you could not coat birdseed with powdered capsaicins (rain
washed it off) but, if you made an oil-based solution of capsaicins, it
would penetrate the sunflower seed husks, Of course, the product, sold in
Canada under the name Squirrel-Proof, had to undergo testing as a
pest-repellant for two and a half years but made it through the regulatory
maze. There was also an occupational hazard situation that had to be
circumvented - a manufacturing plant full of air-borne capsaicins dust!"
Bestest regards,
--Jerry
Alex Clayton - 22 Jul 2004 21:08 GMT
That's interesting, I had never heard about this.
> > > > Alex,
> > > > Part of my childhood was spent in the middle east where I was
[quoted text clipped - 45 lines]
> Bestest regards,
> --Jerry