Founder of a food related robotics company here. There are a number of databases out there covering this sort of thing already, eg. USDA's NNDB. Some of the iss

Founder of a food related robotics company here. There are a number of databases out there covering this sort of thing already, eg. USDA's NNDB. Some of the issues: not global in coverage, static entries where product formulae change, raw entries where products are typically cooked, variable cooking times, variable ingredients, new brand names/mergers, unknown products. Frankly if you want to know what is in your food precisely, the best way is to grow it in an environment that you control, and eat it directly instead of packaging, storing, preserving or transporting.