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Comparative study of the influence of active groups of chitosan derivatives on antifungal activity

机译：壳聚糖衍生物活性基团对抗真菌活性影响的比较研究

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摘要

In this study, series of chitosan derivatives containing active groups were synthesized and evaluated for their antifungal activity against three crop-threatening fungi, Fusarium oxysporum. f. sp. Vasinfectum, Alternaria solani, and Valsa mali. Schiff bases of carboxymethyl chitosan (As: 2-(2-hydroxy-5-nitrobenzylideneamino)-6-carboxymethyl chitosan; Bs: 2-(2-hydroxyl-5-chlorobenzaldimino)-6-carboxymethyl chitosan), N-substituted carboxymethyl chitosan (An: 2-(2-hydroxyl-5-nitrobenzylamino)-6-carboxymethyl chitosan; Bn: 2-(2-hydroxyl-5-chlorobenzylamino)-6-carboxymethyl chitosan) and 2-urea-carboxymethyl chitosan (Au: 2-(2-nitrophenylurea)-6-carboxymethyl chitosan; Bu: 2-(2-chlorophenylurea)-6-carboxymethyl chitosan) were synthesized, and their antifungal activity was comparatively studied by hypha measurement in vitro, respectively. Results obtained from this study revealed that the active groups combined with Schiff bases functional groups (Ci=N) could strengthen the antifungal activity most effectively among the compounds studied in this work.
机译：在这项研究中，合成了一系列含有活性基团的壳聚糖衍生物，并评估了它们对三种威胁农作物的真菌尖孢镰刀菌的抗真菌活性。 F。 sp。 Vasinfectum，Alternaria solani和Valsa mali。羧甲基壳聚糖的席夫碱（As：2-（2-羟基-5-硝基苄基亚氨基）-6-羧甲基壳聚糖; Bs：2-（2-羟基-5-氯苯并二氨基）-6-羧甲基壳聚糖），N-取代的羧甲基壳聚糖（An：2-（2-羟基-5-硝基苄氨基）-6-羧甲基壳聚糖; Bn：2-（2-羟基-5-氯苄氨基）-6-羧甲基壳聚糖）和2-脲-羧甲基壳聚糖（Au：2合成了（（2-硝基苯基脲）-6-羧甲基壳聚糖; Bu：2-（2-氯苯基脲）-6-羧甲基壳聚糖），并通过体外菌丝测量比较了它们的抗真菌活性。从这项研究中获得的结果表明，活性基团与席夫碱官能团（Ci = N）结合可以在本研究的化合物中最有效地增强抗真菌活性。

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