Department of Paper and Bioprocess Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA.
Bioresour Technol. 2010 May;101(10):3586-94. doi: 10.1016/j.biortech.2010.01.005. Epub 2010 Jan 21.
Acid hydrolysis of hot-water wood extract was investigated. Sugar maple wood extract was obtained by hot-water extraction at 160 degrees C for 120min, followed by further concentration and solid removal by membrane filtration. Acid hydrolysis was performed at different temperatures (85 degrees C, 95 degrees C and 105 degrees C) and concentrations of sulfuric acid (wt.%: 1.5%, 3.1% and 6.2%). Hydrolyzate was analyzed by (1)H NMR spectroscopy. The concentrations of several major substances in the hydrolyzate were discussed in detail. Higher temperature, higher acid concentration and longer residence time all favor the depolymerization of hemicellulose wood extracts. Mainly xylose and acetic acid are recovered from the hydrolysis process.
对热水木材提取物进行酸水解研究。糖枫木材提取物通过在 160°C 下热水提取 120 分钟获得，然后通过膜过滤进一步浓缩和去除固体。在不同温度（85°C、95°C 和 105°C）和硫酸浓度（wt.%：1.5%、3.1%和 6.2%）下进行酸水解。通过（1）H NMR 光谱分析水解产物。详细讨论了水解产物中几种主要物质的浓度。较高的温度、较高的酸浓度和较长的停留时间都有利于木聚糖的解聚。主要的木糖和乙酸从水解过程中回收。
