Bioethanol Production from the Raw Corn Starch and Food Waste Employing Simultaneous Saccharification and Fermentation Approach

Abstract

Response surface methodology based on the 2 4 factorial central composite design (CCD) was applied to optimize the liquefaction and saccharification process for the enhancement of sugar production from raw corn starch. Optimum level of the pre and post-cooking a-amylase and glucoamylase dose were found to be 3.0 and 1.5 U/ml, respectively, while saccharification temperature for the maximum sugar production was found to be 50°C. The quadratic model predicted that maximum conversion efficiency for the enhanced sugar production from raw corn starch was 93.65 % under the above mentioned optimum level of variables. Additional experiments performed in triplicate with the optimized level of variables showed maximum conversion efficiency of 94.12 %, in close agreement between the predicted and experimental results. The generated sugar was subjected for the bioethanol production in separate fermentation system using yeast while simultaneous saccharification and fermentation system was also evaluated.

Preparation and characterization of Polyvinyl chloride/Polymethyl- methacrylate/Graphite [PVC/PMMA/G] membrane used for the purification of the bioethanol produced from the hydrolysis and fermentation of rice waste

“…Accordingly, it could be better to combine both chemical/physical and enzymatic treatments in order to increase the overall final glucose concentration. Using of amylase enzyme for the hydrolysis of the starch of cereals and food waste for the production of bioethanol has been reported [31]. mg/ml, respectively.…”

Functionalized maghemite superparamagnetic iron oxide nanoparticles (γ-Fe2O3-SPIONs)-amylase enzyme hybrid in biofuel production

“…Nowadays, the need for alternative fuel is a must as a consequence of the increasing price and depletion of crude oil and other non-renewable fossil fuels. Upon so doing, bio-ethanol was found to be the most common biofuel among the total biofuels, representing about 90% 15 . Seeking for an economically available substrate for bio-ethanol production, researchers found that starch was one of the best sources for biomass conversion through fermentation, where about 60% of bio-ethanol is produced 16 .…”