Diseño y elaboración de una formulación tipo ungüento con agregados de plata sintéticos a partir del extracto de la piel de cebolla roja (Allium Cepa L.).

Abstract

This research used the skin of red onion (Allium Cepa L. ), which is considered a post-harvest waste, it was found that on average this layer represents about 0.5% of the total weight of the onion, despite being a waste, it is rich in phenolic compounds such as flavonols, having its extract with ethanol-water. Significant bands in the UV-vis around 330 nm, and in GC-MS an elucidation of compounds derived from quercetin, which is a flavonol. It was proved, its great synthetic capacity for the reduction of silver, obtaining stable aggregates in sizes ranging from 17 to 96 nm. The red onion skin extract and the extract that synthesized the aggregates were used for the construction of ointments, which were subjected to several tests from TGA, UV-vis, pH, ATR-FTIR, color, among others, to see their characteristics and stability. Obtaining homogeneous ointments, where no phase changes, formation of inorganic aggregates, or sudden color alterations were observed.