Bioprocess engineers produce many products for industrial use. Their applications are manifold, and the products can be found in the pharmaceutical, chemical, and nutrition industries. Stephen Sherwin, former chairman of BIO association put it aptly: “Heal, fuel, and feed the world”. 
The biological production process itself is usually referred to as upstream bioprocessing and comprises all workflow steps from cell banking, preculture, bioreactor inoculation, and main cultivation to final harvest. The following downstream steps, most often performed by a separate department, aim at purifying the product by separation, cell disruption, concentration, and other techniques.