Describe briefly the following:
Down stream processing:

Explanation

Once the biosynthetic phase is completed, the product is subjected through a series of processes before it is marketed.
The processes include separation, purification of products.
The products are formulated with suitable preservatives.
Those formulations must undergo thorough clinical trial as in the case of drugs.
Strict quality control testing mechanism is a must.
The down stream processing and quality control testing vary from product to product.