Before revision: After the E. coli produce sufficient BioPDO product, DuPont uses a method to separate the BioPDO from the cellular broth that comes out of the bioreactor comprising of four steps: microfiltration and ultrafiltration, ion exchange, flash evaporation, and distillation.
After revision: After the E. coli produce sufficient BioPDO product, DuPont uses a method to separate the BioPDO from the cellular broth that comes out of the bioreactor consisting of four steps: microfiltration and ultrafiltration, ion exchange, flash evaporation, and distillation.