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| 亚临界水解菌菇棒制备腐殖质的工艺优化及产物特性分析 |
| Optimization of Subcritical Hydrolysis Process for Humus Preparation from Mushroom Sticks and Characterization of Resulting Products |
| 投稿时间：2025-04-02 修订日期：2025-06-12 |
| DOI： |
| 中文关键词: 亚临界水解 菌菇棒 腐殖质 纤维素 木质素 |
| 英文关键词: Subcritical hydrolysis Mushroom sticks Humus Cellulose Lignin |
| 基金项目:广西民族大学引进人才科研启动项目(2020KJQD12) |
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| 中文摘要: |
| 为探讨亚临界水解菌菇棒制备腐殖质的最佳工艺,本研究以菌菇棒为原料,通过酸溶剂与碱溶剂对菌菇棒进行亚临界水解处理,利用单因素实验分别考察了时间、温度、pH值和固液比对水解率的影响,并结合正交实验进一步优化了水解的工艺条件。采用紫外光谱、三维荧光光谱和傅里叶红外光谱等手段对水解产物的结构进行表征。实验结果表明,最优水解工艺条件为温度260℃、时间120min、pH值为9、料液比1:12,此时菌菇棒的水解率可达63.47%。水解产物的表征结果显示,经过亚临界水解后,菌菇棒中的多糖、蛋白质和木质素被协同降解生成单糖、小分子及芳香族化合物,同时提高了菌菇棒的腐殖化程度。本研究为提高菌菇棒水解率提供了技术方案和理论支持,为生物质资源化利用提供了新途径。 |
| 英文摘要: |
| This study investigated the optimal process for humus preparation via subcritical hydrothermal hydrolysis of mushroom sticks. Using acidic and alkaline solvents, single-factor experiments were conducted to evaluate the effects of reaction time, temperature, pH, and solid-to-liquid ratio on hydrolysis efficiency. The process parameters were further optimized through orthogonal experiments. The structural characteristics of the hydrolysates were analyzed using UV-Vis spectroscopy, three-dimensional fluorescence spectroscopy, and fourier transform infrared (FTIR) spectroscopy. The results indicated that the optimal hydrolysis conditions were a temperature of 260°C, a duration of 120 min, pH 9, and a solid-to-liquid ratio of 1:12, achieving a hydrolysis efficiency of 63.47%. Characterization of the hydrolysates revealed that polysaccharides, proteins, and lignin in the mushroom sticks were synergistically degraded into monosaccharides, small molecules, and aromatic compounds during subcritical hydrolysis, accompanied by a significant enhancement in the humification degree. This study provides technical solutions and theoretical support for enhancing the hydrolysis efficiency of mushroom sticks, offering a novel pathway for the resource utilization of biomass. |
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