Stump wood is a forest residue having significant valorization potential. The aims of this work were to exploit pine stumps as a carbohydrate and lignin feedstock, and to convert the carbohydrate fraction to bioethanol by simultaneous saccharification and fermentation (SSF). Pinus pinaster stump wood (PPSW) was delignified by the alkaline organosolv (AOS) process. Soda (SA) cooking was used as benchmark process. Higher pulp yields were obtained in AOS treatments, whilst SA pulp showed the highest cellulose content. In the SSF of PPSW pulps, high ethanol concentrations were obtained with high productivity and yield. AOS lignins were purer and had lower molar mass and dispersity index, which are important parameters in high‐value co‐product applications.

中文翻译：

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樟子松树桩木材的生物精制用于乙醇生产和木质素回收

残木是具有显着增值潜力的森林残留物。这项工作的目的是利用松树桩作为碳水化合物和木质素原料，并通过同时糖化和发酵（SSF）将碳水化合物馏分转化为生物乙醇。樟子松树桩木材（PPSW）通过碱性有机溶剂（AOS）工艺脱木素。苏打（SA）蒸煮用作基准过程。在AOS处理中获得更高的纸浆产量，而SA纸浆显示出最高的纤维素含量。在PPSW纸浆的SSF中，以高生产率和高收率获得了高浓度的乙醇。AOS木质素更纯净，摩尔质量和分散指数较低，这是高价值联产品应用中的重要参数。