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Enhanced fungicidal efficacy on Ganoderma boninense by simultaneous co-delivery of hexaconazole and dazomet from their chitosan nanoparticles

机译:通过同时共同共同递送来自壳聚糖纳米粒子的六丙二唑和达希测划影,增强了Ganoderma Boninense的杀真菌疗效

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The excessive use of fungicides may be of environmental and health concerns. Hence, to overcome this problem, chitosan as a controlled release matrix was used in this work to encapsulate the fungicide for the development of enhanced fungicide nanodelivery system. In this proposed study, dual-loaded fungicides (hexaconazole and dazomet) were simultaneously encapsulated into chitosan nanoparticles as an antifungal agent on Ganoderma boninense (G. boninense). In this work, we report the synthesis and characterization of the nanoparticles prepared using various concentrations of the crosslinking agent of sodium tripolyphosphate (TPP); 2.5, 5, 10, and 20 mg mL(-1), which resulted in the nanoparticles of CHDEN2.5, CHDEN5, CHDEN10, and CHDEN20, respectively. The effect of TPP on the synthesized nanoparticle size revealed that an increase of TPP resulted in smaller particles, which in turn play a crucial role in controlling G. boninense growth. CHDEN20 shows the highest antifungal efficacy with the lowest half-maximal effective concentration (EC50) on G. boninense. The formulated nanocarrier system of fungicide aims to enhance the efficient delivery of the active ingredients to the target site, able to sustain in it for a longer time, and consequently improve the fungicide efficacy in combating the basal stem rot disease in oil palm.
机译:过量使用杀菌剂可能具有环境和健康问题。因此,为了克服这个问题,在这项工作中使用壳聚糖作为控制释放基质,以包封杀菌剂以进行增强的杀菌剂纳米交货系统。在该拟议的研究中,将双重装载的杀菌剂(六丙基唑和达氮杂物)同时包封在壳聚糖纳米粒子中,作为Ganoderma Boninense(G. Boninense)的抗真菌剂。在这项工作中,我们报告了使用三聚磷酸钠(TPP)的各种浓度的交联剂制备的纳米颗粒的合成和表征; 2.5,5,10和20mg mL(-1),其分别导致CHDEN2.5,CHDEN5,CHDEN10和CHDEN20的纳米颗粒。 TPP对合成纳米颗粒尺寸的影响表明,TPP的增加导致较小的颗粒,这反过来在控制G.Boninense生长方面发挥至关重要的作用。 Chden20显示了最高的抗真菌效果,最大的半最大有效浓度(EC50)上的G. Boninense。配制的纳米载体系统的杀菌剂旨在增强活性成分的有效递送到靶位点,能够持续维持较长的时间,从而改善在油棕中对抗基底茎腐病的杀菌剂功效。

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    《RSC Advances》 |2019年第46期|共13页
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  • 正文语种 eng
  • 中图分类 化学;
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