木质纤维素酶水解分形动力学的研究进展

酶水解作为发酵法生产燃料乙醇的关键步骤之一,其高效的转化过程对后续糖发酵至关重要,酶水解动力学研究可为高效转化机理的研究提供理论支持。但纤维素酶水解是一个复杂的多相异质反应过程,很难用简单的动力学模型进行表征。由于酶分子表面具有分形特性,其与分形动力学具有局部相似性,因此,分形理论可为木质纤维素酶水解的复杂动力学研究提供理论基础。从纤维乙醇生产工艺出发,在分析木质纤维素酶水解机理及影响酶解效率主要因素的基础上,总结了国内外分形动力学目前用于木质纤维素类生物质酶水解过程的主要动力学模型研究进展,并对其发展趋势和应用前景进行了展望。

Research Progress on Fractal Dynamics of Enzymatic Hydrolysis of Lignocellulose

Enzymatic hydrolysis is one of the key steps in bioethanol production with the fermentation method. The efficient enzymatic conversion process is significant for the subsequent sugar fermentation. The study of enzymatic hydrolysis kinetics can provide theoretical support for the study of efficient conversion mechanism. However, cellulose hydrolysis is a complex heterogeneous reaction, which is difficult to be described by a simple kinetic model. The fractal properties on the surface of the enzyme molecule have partial similarity to the fractal dynamics. Therefore, the fractal theory as theoretical support can be used to study the complex kinetics of lignocellulose hydrolysis. In this paper, the production process of cellulosic ethanol was introduced, and the main research progress of kinetic models of fractal dynamics applied to the enzymatic hydrolysis of lignocellulosic biomass was summarized based on the analysis of the hydrolysis mechanism of lignocellulose and the main factors affecting the hydrolysis efficiency, and its development trend and application prospect were finally prospected.