Subject: What are the chemical mechanisms behind flatulence?

I am doing a research seminar on the biochemistry of flatulence 
and am having a hard time finding material about the actual 
chemical mechanisms involved.  Can you help me?  I would also 
like to find out the chemical mechanisms involved with  
preventative medicines such as Beano.  Thanks!!  I look forward 
to a response.
My e-mail address has a dollar sing at the start  of it but it 
does not recognize the character when I try to submit it.

Re: What are the chemical mechanisms behind flatulence?