Cocoa and Chocolate Sources of vitamin D

The document should be scientific writing of 700 words.Format is specialist audience of science.There are two articles,one is related to main topic which is cocoa and chocolate are source of vitamin D2 and othe contributory document is Cocoa:

A potential source of Vitamin D by kristina 23/07/2019[https://bartalks.net/cocoa-potential-source-vitamin-d/] The synthesis of two article must be written in formal scientific style.

The paragraphs(body) structure should be adhere to TEEL principle(T-topic sentence, E-explanation, E-evidence, L-linking sentence).Sub topics of the paragraphs can be there and references mentioned in the document should be there.