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在微波辅助下,以泥炭为研究对象,水为抽提溶剂,采用正交试验考察了抽提温度、时间、固液比及压力对黄腐酸类物质(泥炭水溶酸性抽提物)提取率的影响。结果显示,影响抽提率最主要的因素是压力。较佳的抽提条件为压力0.6MPa、抽提温度150℃、固液比1∶10(g/ml)、抽提时间20min,并采用红外光谱、元素分析及官能团测定的方法分析了抽提物的组成。采用微波辅助法从泥炭中提取医用黄腐酸可能为一种有效的环境友好的方法。
Under the assistance of microwave, peat was taken as the research object and water was the extraction solvent. The extraction rate of fulvic acid (peat water-soluble acidic extract) by extraction temperature, time, solid-liquid ratio and pressure were investigated by orthogonal test. Impact. The results show that the most important factor affecting extraction rate is pressure. The optimum extraction conditions were pressure 0.6MPa, extraction temperature 150 ℃, solid-liquid ratio 1:10 (g / ml) and extraction time 20min, and the extraction was analyzed by IR, elemental analysis and functional group analysis Composition of things. Microwave assisted extraction of fulvic acid from peat may be an effective and environmentally friendly method.