| Popis: |
Rapid depletion and drawbacks of conventional energy sources worldwide presents a dire situation demanding a potential replacement to surmount the current energy crisis. Lignocellulose which presents a logical candidate for biofuel production has however a high processing cost for alternate bio-based fuels worldwide. For economically feasible bioethanol production, three major aspects which are: feedstock pretreatment technology, enzymatic hydrolysis followed by the configuration of fermentation is to be considered. The pretreatment is a crucial step during lignocellulosic biomass processing, since it not only has a great impact on final yields, but also makes an important contribution to overall costs. Microbial lignocellulolytic enzyme systems are of importance both to the scientific as well as commercial world due to incipient applications in bio-based fuels and other valuable commodity chemicals. Lignocellulolytic enzyme complexes play crucial role in hydrolysis of lignocellulosic biomass and wide range of lignocellulolytic enzymes are thereby of utmost importance in the transition of the society into a more sustainable and bio-based economy. Further, the fermentation processes of lignocellulosic hydrolysate such as simultaneous saccharification and fermentation (SSF), separate hydrolysis and fermentation (SHF), consolidated bioprocessing (CBP), and simultaneous saccharification and co-fermentation (SSCF) have to be selected carefully for valuable solutions to the increasing liquid fuel demand. These strategies in future are anticipated to play a major role for replacing oil-based refineries with lignocellulosic-based biorefineries in future. |
