title: Recovery of reducing sugars and volatile fatty acids from cornstalk at different hydrothermal treatment severity.
abstract: This study focused on the degradation of cornstalk and recovery of reducing sugars and volatile fatty acids (VFAs) at different hydrothermal treatment severity (HTS) (4.17-8.28, 190-320°C). The highest recovery of reducing sugars and VFAs reached 92.39% of aqueous products, equal to 34.79% based on dry biomass (HTS, 6.31). GC-MS and HPLC identified that the aqueous contained furfural (0.35-2.88 g/L) and 5-hydroxymethyl furfural (0-0.85 g/L) besides reducing sugars and VFAs. Hemicellulose and cellulose were completely degraded at a HTS of 5.70 and 7.60, respectively. SEM analysis showed that cornstalk was gradually changed from rigid and highly ordered fibrils to molten and grainy structure as HTS increased. FT-IR and TGA revealed the significant changes of organic groups for cornstalk before and after hydrothermal treatment at different HTS. Hydrothermal treatment might be promising for providing feedstocks suitable for biohythane production.
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Zhangbing
authors: Z
authors: Zhu
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China. Electronic address: zdliu@cau.edu.cn.
authors: Zhidan
authors: Z
authors: Liu
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
authors: Yuanhui
authors: Y
authors: Zhang
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Baoming
authors: B
authors: Li
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Haifeng
authors: H
authors: Lu
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Na
authors: N
authors: Duan
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Buchun
authors: B
authors: Si
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Ruixia
authors: R
authors: Shen
authors: Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
authors: Jianwen
authors: J
authors: Lu
mesh_terms: D018533:Biomass; D002241:Carbohydrates / Q000032:analysis*; D002482:Cellulose / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000494:pharmacology*; D003313:Zea mays / Q000737:chemistry* / Q000187:drug effects
chemical_list: D002241:Carbohydrates; D005232:Fatty Acids, Volatile; D014866:Waste Products; D014867:Water; D002482:Cellulose
keywords: Biohythane; Cornstalk; Hydrothermal treatment; Reducing sugars; Volatile fatty acids