Q. The process of separation and purification of expressed protein before marketing is called
(a) downstream processing
(b) bioprocessing
(c) postproduction processing
(d) upstream processing.
Answer (a) : After the formation of the product in the bioreactor, it undergoes some processes before a finished product is ready for marketing. The process includes separation and purification of products which are collectively called downstream processing. The product obtained is subjected to quality control, testing and kept in suitable preservatives.
