CAJ | 학술논문

从木质素模型及原本木质素2个方面综述木质素光降解的研究现状。木质素模型研究表明，光降解是典型的自由基反应，主要通过游离酚途径、羰游基途径和苯甲酰甲基芳醚途径反应，苯氧自由基是光化学反应的重要中间产物。木质素光降解是个氧化过程，伴随着碳的氧化态升高、非共轭羰基减少、共轭羰基增加，大分子木质素发生解聚，最终形成对醌、邻醌等发色基团及苯甲酸、苯甲醛等可溶性小分子酚类化合物，木质素含量明显降低。木质素光化学反应的机理研究中，木质素模型和原本木质素存在一定差距，分子和细胞水平上的深入研究将是未来的发展方向。
종목질소모형급원본목질소2개방면종술목질소광강해적연구현상。목질소모형연구표명，광강해시전형적자유기반응，주요통과유리분도경、탄유기도경화분갑선갑기방미도경반응，분양자유기시광화학반응적중요중간산물。목질소광강해시개양화과정，반수착탄적양화태승고、비공액탄기감소、공액탄기증가，대분자목질소발생해취，최종형성대곤、린곤등발색기단급분갑산、분갑철등가용성소분자분류화합물，목질소함량명현강저。목질소광화학반응적궤리연구중，목질소모형화원본목질소존재일정차거，분자화세포수평상적심입연구장시미래적발전방향。
The paper summarized current studies concerning phododegradation of lignin model and natural lig-nin.The results of lignin model studies showed that lignin photodegradation was a typical free radical reaction,and hydroxyl radical,carbonyl groups and phenacyl aryl ether cleavage were the main type of reaction.Moreover,phe-noxy radical was very important intermediate product.Lignin photodegradation is an oxidation and degradation process,during which carbon′s oxidation state raised,conjugated carbonyl increased and non-conjugated carbonyl decreased,followed by high molecular lignin depolomerizing to some extent,α-quinone and β-quinone were main reason contribute to the discolor,there were soluble small molecular product such as benzoic acid and benzal-dehyde.In the end,the paper pointed out the key problem of the current study and the development direction.