Fractionation and delignification of empty fruit bunches with low reaction severity for high sugar recovery.
Fractionation and delignification of empty fruit bunches (EFB) was conducted in a series of two steps under low reaction severity with the aim of minimizing the neutralization of hydrolyzates. In EFB underwent acid fractionation, the glucan content was increased to 62.4%, at which point 86.9% of the hemicellulosic sugar and 20.5% of the lignin were extracted from the raw EFB. Xylose-rich hydrolyzate, indicating a high selectivity of 17.7 could be separated. Through the consecutive delignification of acid-fractionated EFB using sodium hydroxide, solid residue with a high glucan content (70.4%) and low hemicellulosic sugar content (3.7%) could be obtained, which indicated that 95.9% of the hemicellulosic sugar and 67.5% of the lignin were extracted based on raw EFB. The final pretreated solid residue was converted to glucose through enzyme hydrolysis, which resulted in an enzymatic digestibility of 76.9% was achieved.
Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea.
Jin Young
JY
Hong
Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea.
Young Soo
YS
Kim
Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea. Electronic address: kkoh@dankook.ac.kr.
Kyeong Keun
KK
Oh
D000143:Acids / Q000737:chemistry; D001673:Biodegradation, Environmental; D018533:Biomass; D002241:Carbohydrates / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D002480:Cellulase / Q000737:chemistry; D005591:Chemical Fractionation / Q000379:methods*; D005285:Fermentation; D005638:Fruit / Q000378:metabolism*; D005690:Galactose / Q000737:chemistry; D005936:Glucans / Q000737:chemistry; D005947:Glucose / Q000737:chemistry; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D008358:Mannose / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D013464:Sulfuric Acids / Q000737:chemistry; D014994:Xylose / Q000737:chemistry
D000143:Acids; D002241:Carbohydrates; D005936:Glucans; D011134:Polysaccharides; D013464:Sulfuric Acids; D012972:Sodium Hydroxide; D002244:Carbon; C007916:hemicellulose; D008031:Lignin; D014994:Xylose; D002480:Cellulase; D005947:Glucose; D008358:Mannose; D005690:Galactose
Biomass; EFB; Selectivity; Sodium hydroxide; Sulfuric acid