李彤彤, 李冠君, 李家宁, 等. 热处理橡胶木中糠醛及5−甲基糠醛测定方法研究[J]. 西南林业大学学报(自然科学), 2024, 44(5): 1–6. DOI: 10.11929/j.swfu.202309063
引用本文: 李彤彤, 李冠君, 李家宁, 等. 热处理橡胶木中糠醛及5−甲基糠醛测定方法研究[J]. 西南林业大学学报(自然科学), 2024, 44(5): 1–6. DOI: 10.11929/j.swfu.202309063
Li Tongtong, Li Guanjun, Li Jianing, Li Xiaowen, Li Min, Qin Shaoshan, Li Yachao. Determination of furfural and 5-methylfurfural in thermally modified rubberwood[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202309063
Citation: Li Tongtong, Li Guanjun, Li Jianing, Li Xiaowen, Li Min, Qin Shaoshan, Li Yachao. Determination of furfural and 5-methylfurfural in thermally modified rubberwood[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202309063

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热处理橡胶木中糠醛及5−甲基糠醛测定方法研究

Determination of furfural and 5-methylfurfural in thermally modified rubberwood

  • 摘要: 建立高效液相色谱方法,使用C18色谱柱,以甲醇−水(75∶25,V/V)为流动相,流速1.0 mL/ min,糠醛和5−甲基糠醛的检测波长分别为271、284 nm,保留时间分别为4.969、9.246 min,可以同时准确测定糠醛和5−甲基糠醛的含量。结果表明:测定方法具有简便易操作、灵敏度高、重复性好的优点;优化了橡胶木中糠醛和5−甲基糠醛的提取方法,用高效液相色谱法测定了橡胶木素材和不同温度(125、155、185 ℃)热处理橡胶木中糠醛和5−甲基糠醛的含量变化。随着热处理温度升高,热处理橡胶木中糠醛和5−甲基糠醛的含量由3.4 μg/g和1.9 μg/g逐渐升高至103.5 μg/g和54.1 μg/g,此结果为调控热处理橡胶木工艺提供参考。

     

    Abstract: Thermally modification technology effectively improves the dimensional stability of rubberwood, and is a green and environmentally friendly modification technology. But the thermally modified rubberwood will emit special odor, whose main contribution compounds is 5-methylfurfural and furfural. It's limited the application of thermally modified rubberwood. The deter mination method of furfural and 5-methylfurfural in thermally modified rubberwood was established, which would provide theoretical reference for the production of low-odor thermally modified rubberwood. The established HPLC method used a C18 column with methanol-water (75:25, v/v) as the mobile phase at a flow rate of 1.0 mL/ min. The detection wavelengths of furfural and 5-methylfurfural were 271 nm and 284nm, respectively, and their retention times were 4.969 min and 9.246 min. The furfural and 5-methylfurfural can be accurately deter mined at the same time by this method, which has the advantages of simple operation, high sensitivity and good repeatability. The extraction method of furfural and 5-methylfurfural in rubberwood was optimized, and the contents of furfural and 5-methylfurfural in thermally modified rubberwood at different temperatures (125 ℃, 155 ℃, 185 ℃) were deter mined. It's showed that the contents of furfural and 5-methylfurfural in thermally modified rubberwood increased from 3.4 μg/g and 1.9 μg/g to 103.5 μg/g and 54.1 μg/g. This results would provide a theoretical reference for regulating the thermally modification technology of rubberwood.

     

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