DILUTE ACID HYDROLYSIS OF PADDY STRAW AS SUBSTRATE FOR A.B.E FERMENTATION

C. VIJAYANAND¹*, S. KAMARAJ², S. KARTHIKEYAN³, S. SRIRAMAJAYAM^4
1Department of Bioenergy, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
²Department of Bioenergy, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
³Department of Bioenergy, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
⁴Department of Bioenergy, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
* Corresponding Author : vijayeeeanand@gmail.com

Received : 04-07-2016     Accepted : 24-07-2016     Published : 24-10-2016
Volume : 8     Issue : 50       Pages : 2128 - 2132
Int J Agr Sci 8.50 (2016):2128-2132

Keywords : Paddy straw, Hydrolysis, Monosaccharide, Cellulose, Hemicelluloses
Academic Editor : N Arunkumar, Dr D Ramesh
Conflict of Interest : None declared
Acknowledgements/Funding : Author would like to acknowledge University Grants Commission (UGC).
Author Contribution : None declared

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.