Explain downstream processing.

(N/A) After the completion of the biosynthetic stage,the product must undergo a series of processes before it is ready for marketing as a finished product.
The processes include separation and purification,which are collectively referred to as downstream processing.
$\rightarrow$ The product must be formulated with suitable preservatives.
$\rightarrow$ Such formulations must undergo thorough clinical trials,as in the case of drugs.
Strict quality control testing for each product is also required.
The downstream processing and quality control testing vary from product to product.