摘要
[目的]研究水溶性壳聚糖及其稀土离子金属配合物的抑菌活性。[方法]合成水溶性壳聚糖和稀土离子La(Ⅲ)、Ce(Ⅲ)、Nd(Ⅲ)的配合物,利用FT-IR、UV-Vis和热重分析仪对配合物进行表征,研究壳聚糖及其配合物对芦笋茎枯病菌Phomopsis asparagus的抑制活性。[结果]壳聚糖Ce(Ⅲ)配合物对Phomopsis asparagus的抑菌活性较单一的水溶性壳聚糖及其他稀土配合物显著提高。[结论]水溶性壳聚糖稀土配合物抑菌活性分别为Ce(Ⅲ)配合物>La(Ⅲ)配合物>Nd(Ⅲ)配合物>壳聚糖。
[Aims] Antifungal activities of water-soluble complexes of chitosan-RE(III) were studied.[Methods] Water-soluble complexes of chitosan-La(Ⅲ),Ce(III),Nd(Ⅲ) were synthesized and characterized by FT-IR,UV-Vis spectra and TGA.The antifugal activities of chitosan and chitosan-RE(Ⅲ) complexes against Phomopsis asparagus were investigated.[Results] Chitosan-Ce(III) had the higher antifungal activity than water-soluble chitosan and other complexes.[Conclusions] The order of the antifungal activities of the complexes is Ce(Ⅲ)〉La(Ⅲ)〉Nd(Ⅲ)〉chitosan.
出处
《农药》
CAS
北大核心
2012年第3期179-181,共3页
Agrochemicals
基金
山东省自然科学基金资助项目(ZR2010CM037)
农业部科研资助项目(2130108)
关键词
水溶性壳聚糖
稀土配合物
抑菌活性
芦笋茎枯病菌
water-soluble chitosan; RE(Ⅲ) complex; antifungal activity; Phomopsis asparagus