This is a sound post. Definitely show cases some of the naturally grown products, which are absolutely, on their own, 'natural' products.

Many fruits and flowers are used in the production of Natural products. Bioflavonoids, polyphenols, carotenoids are substances that can be extracted and used in supplements or other products, like cosmetics or as food additives. They have been typically referred to as primary or secondary metabolites (depending on function) or non-essential nutrients.

For instance, from your pictures;

• Papaya - extract used in cosmetics for vitamins A,C
• Peppers - depending on the variety have capsicum, as an extract is an ingredient to medicine and supplements.
• Tomatoes - have lycopene used in medicine and supplements for eye support.

Natural products is a term that was coined in the early 1800's as organic and natural chemistry started to take root. It's a field of science study, a lifestyle and an industry.

From farm to shelf... Hope that helps.