While interesting, I think these diagrams are dangerous. They send a message that if fresh fruits contain these "scary" chemicals, then we shouldn't worry about the chemicals we see in processed foods. The problem is that some processed foods really do contain chemicals we should be afraid of. Artificial colours or things like calcium disodium EDTA are good examples.

My part time project has been to try and provide some simple to understand descriptions of the "scary" chemicals at http://foodconstrued.com