Vegetarian/Vegan bread?

So, I was looking at ingredients on my bread earlier and seen enzymes. I looked it up and apparently a lot of breads have them and datem and other stuff that could be derived from animal sources. I didn't think to check bread for ingredients when I became a vegetarian because that's not something that comes to mind when I think animal products. I think I read somewhere that Nature's Own usually uses plant derived sources, but can this be confirmed? And are there any other brands of bread and buns that are safe to eat?

Edit: Thanks for all the suggestions! :)