将间甲酚掺入油棕叶柄木质素中以改善其结构和抗氧化性能的研究。
Modification of oil palm fronds lignin by incorporation of m-cresol for improving structural and antioxidant properties.
机构信息
Lignocellulosic & Materials Technology Research Group, School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia.
Laboratoire d'Etude et de Recherche sur le MAteriau Bois (LERMAB), Faculte des Sciences et Techniques, Universite de Lorraine, Bld des Aiguillettes, F-54500, Vandoeuvre-les-Nancy, France.
出版信息
Int J Biol Macromol. 2017 Nov;104(Pt A):251-260. doi: 10.1016/j.ijbiomac.2017.06.038. Epub 2017 Jun 8.
Lignin extracted from oil palm fronds (OPF) underwent chemical modification by incorporating m-cresol into the lignin matrix. This study reports on the physicochemical properties and antioxidant activity of unmodified autohydrolyzed ethanol organosolv lignin (AH EOL) and the modified autohydrolyzed ethanol organosolv lignin (AHC EOL). The lignin samples were analyzed by FTIR, H and C NMR spectroscopy, 2D NMR: HSQC spectroscopy, CHN analysis, molecular weight distribution analysis; GPC and thermal analysis; DSC and TGA. The lignin modification has reduced the hydrophobicity of its complex structure by providing better quality lignin with smaller fragments and higher solubility rate in water (D: 42%>D: 25%). It was revealed that the modification of lignin has improved their structural and antioxidant properties, thus venture their possible applications.
从油棕叶柄中提取的木质素通过将间甲酚掺入木质素基质中进行化学修饰。本研究报告了未经修饰的自水解乙醇有机溶剂木质素（AH EOL）和修饰的自水解乙醇有机溶剂木质素（AHC EOL）的物理化学性质和抗氧化活性。通过傅里叶变换红外光谱（FTIR）、H 和 C 核磁共振波谱（NMR）、二维 NMR：HSQC 光谱、CHN 分析、分子量分布分析、凝胶渗透色谱（GPC）和热分析（DSC 和 TGA）对木质素样品进行了分析。木质素的修饰通过提供质量更好、碎片更小且在水中溶解度更高的木质素（D：42%>D：25%），降低了其复杂结构的疏水性。结果表明，木质素的修饰改善了它们的结构和抗氧化性能，从而可能有其潜在的应用。
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