DILUTE ACID HYDROLYSIS OF PADDY STRAW AS SUBSTRATE FOR A.B.E FERMENTATION
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 50
Abstract
Lignin presence in the fermentation substrate make it hard to breakdown by microbial activity since it is made of complex polymers, like phenolic propane units which are linked to one another by ether/carbon-carbon bonds. Dilute acid hydrolysis of paddy straw biomass was carried out for the depolymerization of hemicelluloses into xylose and other forms of sugars; this pretreatment was aimed in the intention of removal of lignin, improving the formation of fermentable sugars, degradation of carbohydrates. The acid employed in the dilute acid hydrolysis was orthophosphoric acid (H3PO4). The acid hydrolysis of paddy straw was employed in breaking down the hemicelluloses into pentose and hexose sugars for its utilization by microbial culture for more easier and simple bioconversion of sugars to solvents. The maximum sugars released were observed for 5% orthophosphoric acid concentration, the concentration of sugars in the acidified hydrolysate was 35mg/g.
Authors and Affiliations
C. VIJAYANAND
Keywords
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