Read the label dude
. I buy the ones where the ingredients are: Plichards 60%, Tomato Suace (from concentrate) 38%, Salt, Maize Starch, Guar Gum. OK so the Maize starch and Guar gum are not ideal, there is less than 2% of both, there is more salt than Maize starch, so I really don't stress about the tiny bit of maize starch, especailly when I can get a big ass can for less than a quid
If you are really bothered you could always wash the tomato sauce off.
You know all those pictures of Adam and Eve where they have belly button? Think about it..................... take as long as you need........................