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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Preparation, Characterization, and In Vitro Testing of Nanoclay Antimicrobial Activities and Elicitor Capacity
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Preparation, Characterization, and In Vitro Testing of Nanoclay Antimicrobial Activities and Elicitor Capacity

机译:纳米粘土抗微生物活性和引导性能的制备,表征和体外测试

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摘要

Clay-based nanocomposites (nanoclays) are interesting systems to hold a wide type of active substances with a wide field of industrial applications. Bentonite-chitosan nanoclay was obtained via cationic exchange of natural bentonite (Bent) with an aqueous solution of chitosan (CS). Their physicochemical and morphological properties were discussed under the light of Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. Bent CS characterization indicated that CS was intercalated in 10% (w/w). This polycationic polymer was oriented mostly in a monolayer arrangement, interacting by electrostatic forces between Bent sheets. The antimicrobial action of Bent CS nanoclay was assayed onto phytopathogens, the bacterium model Pseudomonas syringe pv. tomato DC3000 (Psy) and the necrotrophic fungus Fusarium solani f. sp. eumartii (F. eumartii). In addition to demonstrating cell death on both microorganisms, Bent-CS exerted elicitor property on tomato plantlets. The biological actions of this natural nanomaterial might make it proper to be used in crops.
机译:基于粘土的纳米复合材料(NanoClays)是有趣的系统,以占据具有广泛的工业应用领域的广泛类型的活性物质。通过邻天然膨润土(弯曲)与壳聚糖(Cs)的水溶液,通过阳离子交换获得Bentonite-壳聚糖纳米粘土。在傅里叶变换红外光谱,X射线衍射,热重分析和扫描电子显微镜的光下讨论了它们的物理化学和形态学性质。弯曲CS表征表明,Cs在10%(w / w)中嵌入。该聚阳离子聚合物主要以单层布置定向,通过弯曲片之间的静电力相互作用。弯曲Cs纳米粘土的抗微生物作用在植物病变上,细菌模型假鼠霉素注射器PV。番茄DC3000(PSY)和虚张症真菌镰刀菌索兰菌。 sp。 Eumartii(F. Eumartii)。除了在微生物上证明细胞死亡之外,弯曲Cs还施加了番茄小植物的Elicitor属性。这种天然纳米材料的生物学作用可能使其适用于作物。

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