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Description
The results of the encapsulation of a nanobioherbicide formulation of Puccina sp.- Ag NPs using the drip extrusion technique and chitosan as encapsulating polymer are presented. The synthesis of Ag nanoparticles was obtained by chemical reduction method. The Ag NPs were characterized by visual inspection, ultraviolet-visible spectroscopy and transmission electron microscopy (TEM). The nanobioherbicide precursor solutions containing sodium tripolyphosphate (TPP) as a gelling agent were prepared under ambient conditions and rigorous stirring. By varying the percentage of TPP 4.0, 3.0, 2.0 and 1.0% in the precursor solution containing the nanobioherbicide, it was possible to prepare nanobioherbicide capsules with sizes of 4 mm and to control the porosity of the shells. Characterization by optical microscopy showed the formation of well-defined and homogeneous microcapsules. SEM analysis revealed the formation of different morphologies in the cross section of the shells depending on the TPP concentration. UV-Vis spectroscopy results revealed the presence of the nanobioherbicide in the capsules. Finally, the nanobioherbicide Puccina sp.- Ag NPs was applied on Amaranthus retroflexus in order to observe the herbicidal effect.
Reference
G. L. Zabot, F. Schaefer Rodrigues, L. Polano Ody, M. Vinícius Tres, E. Herrera, H. Palacin,J. S. Córdova-Ramos, I. Best y L. Olivera-Montenegro, Encapsulation of Bioactive Compounds for Food and Agricultural Applications, Polymers, 14 (2022), https://doi.org/10.3390/polym14194194
This work was supported by
The authors are grateful for the financial support provided by SIP-IPN and CONAHCYT for the realization of this research work.
| Keywords | Ag nanoparticles, Encapsulation, Nanobioherbicides |
|---|---|
| Author approval | I confirm |
| Author will attend | I confirm |
