Health & Environmental Research Online (HERO)


Print Feedback Export to File
4247851 
Journal Article 
Impacts of the Combined Pretreatment Using NaOH and Ozone on Enzymatic Hydrolysis and Morphology of Rice Straw 
Li, HY; Jin, M; Huang, KL; Li, ZG; Liu, SQ; Liu, YN; Wu, XW 
2013 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
25 
5 
2816-2820 
WOS:000317245800103 
The combined pretreatment of rice straw using NaOH and ozone followed by enzymatic hydrolysis was investigated in comparison With NaOH pretreatment. In order to measure the composition variance, the surface morphology of rice straw was investigated by the scanning electron microscopy. The combined pretreatment of rice straw increased the specific surface area and total, pore volume, which could degrade the lignin polymer, solubilize hemicellulose and neutral detergent solubles. During the combined-pretreatment dried straw using NaOH and ozone, no measurable quantity of furfural and hydroxymethyl furfural has been detected: These chemical and morphological changes of rice straw lead to the increased access of cellulase to rice straw surface and the enhanced susceptibility to enzymatic hydrolysis: The conversed percentage of cellulose and hemicelluloses presented in combined pretreated rice straw is 92.6%, while those of NaOH pretreated and untreated rice straw are 73.8% and 52.5%, respectively. 
Rice straw; Ozone; Pretreatment; Enzymatic hydrolysis; Morphology