壳聚糖-La(Ⅲ)配合物的合成及对芦笋茎枯病菌抑菌活性研究

Synthesis of Chitosan-La(Ⅲ)complex and antifungal activity on hyphal growth of Phomopsis asparagus

合成了水溶性壳聚糖和稀土离子La(Ⅲ)的配合物,利用FT-IR和UV-Vis对配合物进行了表征,研究了壳聚糖及其配合物对芦笋茎枯病菌Phomopsis asparagus的抑制活性。结果表明壳聚糖La(Ⅲ)配合物对Pho-mopsis asparagus的抑菌活性较单一的水溶性壳聚糖显著提高。在低浓度1.00 mg.mL-1和1.25 mg.mL-1条件下,其抑菌活性分别提高87.68%和88.23%。

Water-soluble complex of chitosan-La（Ⅲ）was synthesized and characterized by FT-IR and UV-Vis spectra.The antifugal activities of chitosan and chitosan-La（Ⅲ）complex against Phomopsis asparagus were investigated.Results showed that chitosan-La（Ⅲ）had the higher antifungal activity than water-soluble chitosan,and at the low level of concentation of 1.00mg·mL-1和1.25mg·mL-1,its activity was increased 87.68%and 88.23%respectively.