I found a variety of things in my house with the ingredients: alginates, carrageenan, and beta carotene.
Baked chicken (from a TV dinner) and onion rings has alginates in it. Mashed potatoes (from a TV dinner), cinnamon rolls, donuts had beta carotene in them. Ice cream, slim fast, and coffee creamer has carrageenan in them. The point of this assignment was to be aware of the different types of algae that can be found in every day food.