Fungicides based on chitosano/Nanoparticles of noble metals/capsaicin for use in the elaboration of organic products. Structural characterization and evaluation of its biocidal action.

Today the control of pests and diseases depend mainly on the use of synthetic agrochemicals, which has increased the population of resistant phytopathogens causing a significant increase in production costs, in addition to serious pollution problems. Therefore, global markets for certified organic products have grown radically in recent years. A fungicide of plant origin (capsaicin), changing its action with the use of noble metal nanoparticles (Cu, Ag or Au), stabilized in a biopolymer (chitosano) to apply it in the production of organic products, it would be a very good alternative as a fungal. For them, the synthesis of Nanoparticles of Cu, AG and Au will be carried out through the solvothermal technique, providing a regularity of the size and shape, being a quite optimal technique because it produces few interferents and by the use of high pressures, it causes the nanoparticles to have irregular crystalline habits. With this, the bactericidal activity presented by the nanoparticles is used, stabilized in the chitosan, which in high concentrations has also shown to have fungicide activity. Then Qitosano/Nanoparticles intends to incorporate capsaicin, which is extracted from the ajís and thus enhance their fungicidal qualities. These matrices are sensitive to the region, being in the first instance the chitosan is one of the main waste of the shrimp industry. In addition, 5 of the 9 Capsicum (Ají) species in the country are produced in the Austro, along with this, mining extractions of noble metals are a primary activity in Ecuador.

15th UNIVERSITY RESEARCH COMPETITION