All I know about the subject is that my brother has severe allergy to sesame seeds and goes quickly into anaphylactic shock.  He needs to have the pens available to him.  He just ends up calling 911.  We have to read all the ingredients and he can't buy stuff like the bread at that nice bread company because on some they use sesame and also there is cross contamination.  Perhaps an interesting bit of info that I read on the internet is in parts of Europe and Canada there are a lot of people that are allergic and it's becoming a problem in the US.  

http://allergicliving.com/2010/09/01/all-about-sesame-and-seed-allergies/ 
http://www.healthline.com/health/allergies/understanding-sesame-allergies#Overview1

It would be nice if big business weren't such money grubbers.  I realize that they need money for research, but why bother to do research if people can't afford the drugs they create.