Elliston Adam, Wilson David R, Wellner Nikolaus, Collins Samuel R A, Roberts Ian N, Waldron Keith W
The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
The National Collection of Yeast Cultures, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
Bioresour Technol. 2015;187:136-143. doi: 10.1016/j.biortech.2015.03.089. Epub 2015 Mar 25.
This study evaluated steam (SE) explosion on the saccharification and simultaneous saccharification and fermentation (SSF) of waste copier paper. SE resulted in a colouration, a reduction in fibre thickness and increased water absorption. Changes in chemical composition were evident at severities greater than 4.24 resulting in a loss of xylose and the production of breakdown products known to inhibit fermentation (particularly formic acid and acetic acid). SE did not improve final yields of glucose or ethanol, and at severities 4.53 and 4.83 reduced yields probably due to the effect of breakdown products and fermentation inhibitors. However, at moderate severities of 3.6 and 3.9 there was an increase in initial rates of hydrolysis which may provide a basis for reducing processing times. Co-steam explosion of waste copier paper and wheat straw attenuated the production of breakdown products, and may also provide a basis for improving SSF of lignocellulose.
本研究评估了蒸汽（SE）爆破对废复印纸糖化及同步糖化发酵（SSF）的影响。SE导致纸张变色、纤维厚度减小且吸水性增加。当强度大于4.24时，化学成分发生明显变化，导致木糖损失，并产生已知会抑制发酵的分解产物（特别是甲酸和乙酸）。SE并未提高葡萄糖或乙醇的最终产量，在强度为4.53和4.83时产量降低，这可能是由于分解产物和发酵抑制剂的作用。然而，在强度为3.6和3.9的中等程度下，水解初始速率有所提高，这可能为缩短加工时间提供依据。废复印纸与小麦秸秆的共蒸汽爆破减弱了分解产物的产生，也可能为改善木质纤维素的同步糖化发酵提供依据。
