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Synthesis and Characterization of Chitosan nanoparticles Loaded Botanical Extracts with Antifungal Activity on Colletotrichum gloeosporioides and Alternaria species

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Advances in Microbiology 2018年第4期8卷 286-296页

作者： Laura Leticia Barrera-necha Zormy nacary Correa-Pacheco Silvia Bautista-Banos Mónica Hernández-López Jorge Eduardo Martínez Jiménez aime frida morán mejía Instituto Politécnico nacional Centro de Desarrollo de Productos Bióticos MorelosMéxico

In this study, chitosan nanoparticles (CSnPs) and chitosan nanoparticles- botanical extracts: EEA-CSnPs (ethanolic blueberry extract added chitosan nano-particles) and EMn-CSnPs (extract methanol of nanche added chitosan nano-particles) were characterized and evaluated in vitro ongrowth of Alternaria alternata isolated from Fig and Rosemary and Colletotrichum gloeosporioides isolated from Papaya and Soursop. From particle size distribution characteriza-tion, the size of nanoparticles increased after EEA incorporation. On the other hand, the smallest value of Z-average particle size was for the EMn-CSnPs. Zeta potential value decreased for CSnPs and EEA-CSnPs. However, when EMn is incorporated to CSnPs, the value is increased. From the results, it can be seen that the most stable suspension was EMn-CSnPs. After incorporation of Byrsonima crassifolia to CSnPs, no changes were observed in characteristic absorption bands for the FTIR spectra. However, after Vaccinium corymbosum incorporation to the CSnPs, changes were seen. For in vitro evaluation, CSnPs without EEA caused the total germination and sporulation inhibition of A. alternata from Rosemary. Incorporation of EMn to CSnPs improved the control of C. gloeosporioides with amycelial growth inhibition of 79% isolated from papaya and 82% isolated from soursop. In both isolated there were total germination inhibition. Overall, a synergistic effect between the chitosan and EMn was observed.

关键词： Zeta Potential In Vitro Fungi Blueberry nanche

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