Peshkova Svetlana, Li Kaichang
Department of Wood Science and Engineering, Oregon State University, Corvallis, OR 97331-5751, USA.
J Biotechnol. 2003 Apr 24;102(2):199-207. doi: 10.1016/s0168-1656(03)00026-9.
Chitosan-phenolics systems were investigated as wood adhesives. Adhesion between two pieces of wood veneer developed only when all three components-chitosan, a phenolic compound, and laccase-were present. For the adhesive systems containing a phenolic compound with only one phenolic hydroxyl group, adhesive strengths were highly dependent upon the chemical structures of phenolic compounds used in the system and the relative oxidation rates of the phenolic compounds by laccase. The adhesive strengths were also directly related to the viscosity of the adhesive systems. However, for the adhesive systems containing a phenolic compound with two or three phenolic hydroxyl groups adjacent to each other, no correlations among adhesive strengths, relative oxidation rates of the phenolic compounds by laccase, and viscosities were observed. The adhesion mechanisms of these chitosan-phenolics systems were proposed to be similar to those of mussel adhesive proteins.
壳聚糖-酚类体系作为木材胶粘剂进行了研究。只有当壳聚糖、酚类化合物和漆酶这三种成分都存在时，两块薄木片之间才会产生粘结力。对于只含一个酚羟基的酚类化合物的胶粘剂体系，粘结强度高度依赖于体系中所用酚类化合物的化学结构以及漆酶对酚类化合物的相对氧化速率。粘结强度也与胶粘剂体系的粘度直接相关。然而，对于含有两个或三个彼此相邻酚羟基的酚类化合物的胶粘剂体系，未观察到粘结强度、漆酶对酚类化合物的相对氧化速率和粘度之间的相关性。这些壳聚糖-酚类体系的粘结机理被认为与贻贝粘附蛋白的粘结机理相似。
