I don't know the exact answer to your question, but...
I do love the show. I have a couple of links you'd probably find interesting.
This one is all about what actually goes on when taping an Iron Chef America battle:
http://www.villagevoice.com/2008-02-19/news/iron-chef-boyardee/1
This one has Iron Chef has some interesting history about Iron Chef Japan and America
http://www.foodnetwork.com/shows/the-history-of-iron-chef/index.html
"Over the history of Japan's Iron Chef and Iron Chef America, injuries have included Masaharu Morimoto being bitten by a monkfish and Hiroyuki Sakai being bitten by a squid. Bobby Flay was the most badly injured when in one episode, he seriously cut his finger and was nearly electrocuted."
Crazy stuff, huh?