Pacific Agri-Food Research Center, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada V0H 1Z0.
Bioresour Technol. 2012 Apr;109:215-23. doi: 10.1016/j.biortech.2012.01.031. Epub 2012 Jan 16.
Optimization of acid-catalyzed conversion conditions of wheat straw into furfural, 5-hydroxymethylfurfural (HMF), glucose, and xylose was studied by response surface methodology (RSM). A central composite design (CCD) was used to determine the effects of independent variables, including reaction temperature (140-200 °C), residence time (1-41 min), pH (0.1-2.1), and liquid:solid ratio (15-195 mL/g) on furan and sugar production. The surface response analysis revealed that temperature, time and pH had a strong influence on the furfural, HMF, xylose and glucose yield, whereas liquid to solid ratio was found not to be significant. The initial pH of solution was the most important variable in acid-catalyzed conversion of wheat straw to furans. The maximum predicted furfural, HMF, xylose and glucose yields were 66%, 3.4%, 100%, and 65%, respectively. This study demonstrated that the microwave-assisted process was a very effective method for the xylose production from wheat straw by diluted acid catalysis.
采用响应面法（RSM）研究了酸催化小麦秸秆转化为糠醛、5-羟甲基糠醛（HMF）、葡萄糖和木糖的条件优化。采用中心复合设计（CCD）确定了反应温度（140-200°C）、停留时间（1-41min）、pH 值（0.1-2.1）和液固比（15-195mL/g）等独立变量对呋喃和糖产量的影响。表面响应分析表明，温度、时间和 pH 值对糠醛、HMF、木糖和葡萄糖产率有很强的影响，而液固比则不显著。溶液的初始 pH 值是酸催化小麦秸秆转化为呋喃的最重要变量。最大预测的糠醛、HMF、木糖和葡萄糖得率分别为 66%、3.4%、100%和 65%。本研究表明，微波辅助工艺是通过稀酸催化从小麦秸秆生产木糖的一种非常有效的方法。
