Enhanced enzymatic hydrolysis and structural features of corn stover by FeCl3 pretreatment.
Corn stover was pretreated with FeCl(3) to remove almost all of the hemicellulose present and then hydrolyzed with cellulase and beta-glucosidase to produce glucose. Enzymatic hydrolysis of corn stover that had been pretreated with FeCl(3) at 160 degrees C for 20 min resulted in an optimum yield of 98.0%. This yield was significantly higher than that of untreated corn stover (22.8%). FeCl(3) pretreatment apparently damaged the surface of corn stover and significantly increased the enzymatic digestibility, as evidenced by SEM and XRD analysis data. FTIR analysis indicated that FeCl(3) pretreatment could disrupt almost all the ether linkages and some ester linkages between lignin and carbohydrates but had no effect on delignification. The FeCl(3) pretreatment technique, as a novel pretreatment method, enhances enzymatic hydrolysis of lignocellulosic biomass by destructing chemical composition and altering structural features.
Liu
Li
L
College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 398, 17 Qinghua Donglu, Haidian District, Beijing 100083, China.
Sun
Junshe
J
Li
Min
M
Wang
Shuhao
S
Pei
Haisheng
H
Zhang
Jingsheng
J
D018533:Biomass; D002241:Carbohydrates / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D002712:Chlorides; D004952:Esters; D005290:Ferric Compounds / Q000494:pharmacology*; D006868:Hydrolysis; D008031:Lignin; D008855:Microscopy, Electron, Scanning / Q000379:methods; D011134:Polysaccharides / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction; D003313:Zea mays / Q000378:metabolism*; D001617:beta-Glucosidase / Q000737:chemistry
D002241:Carbohydrates; D002712:Chlorides; D004952:Esters; D005290:Ferric Compounds; D011134:Polysaccharides; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; D001617:beta-Glucosidase; C024555:ferric chloride