What's Inside The 26-Ingredient School Lunch Burger?

What's Inside The 26-Ingredient School Lunch Burger?
http://www.npr.org/blogs/thesalt/2012/04/02/149717358/whats-inside-the-26-ingredient-school-lunch-burger

"Thiamine mononitrate, disodium inosinate, pyridoxine hydrochloride.
Why are these hard-to-pronounce ingredients added to everything from a burger served in schools to veggie burgers in the frozen food aisle of the grocery store? We try to answer that on this edition of Tiny Desk Kitchen."