Who to know that they are valuable food?, it must see to the production. Storage, including the components in the diet. For this reason, it's a profession of food science.
In order to know which foods are valuable or not, we must look to the production. Storage includes ingredients that before. This is why it is a source of professional food scientists.
Which to know those valuable food or have to see to production. Keeping the components in the dishes. Therefore, what is the source of the professional food scientist .