Calcium carbonate is chalk, but it is also prescribed to people with low levels of calcium.
Alpha-Amylase is the digestive enzyme found in your mouth.
Hemicellulase has a role in the immune system.
Most flour is 'fortified' that is extra minerals and vitamins are added, either because they are removed by the process of making flour of to act as a supplement, this started WWII to make sure people got nutritional food even when there were shortages.
I understand the argument of 'do you recognise it as food' but a lot of things that are food also have a chemical name eg salt is sodium chloride, a compound of a highly unstable metal and a gas used in WWI to kill large numbers of people.
But sodium and potassium are both important to keep your heart beating.
Vinegar is acetic acid.
I like to make chutneys and pickles, both sugar and vinegar are preservatives, that's why food was originally pickled / preserved / stored.