Is the food science a Material Science? No. That is synthetical science. You don't put paint in your mouth, or a steel, or high speed train.

You don't eat the infrastructure, or those small tiny gadget stuffs. 

You can put the artificial dye in your mouth, I would not recommanded. Just looking at it, its suicidal.  They put this a kid get his tongue out stuffs. First things is a no, second thing, don't bother talking about it. American