In simultaneous saccharification and co-fermentation (SSCF) technology enzymatic hydrolysis of lignocellulose continuously releases hexose (glucose) and pentose (xylose) sugars and two organisms jointly assimilate the pentoses and hexoses. Examples of the organisms are Pichia stipitis and Brettanomyces clausennii and in other cases recombinant microorganisms have been used.

Consolidated bioprocessing

In this process, fermentation and enzyme production are carried out by a single microorganism growing in a single bioreactor. There are no microorganisms which can carry out this process at present but some are under development.