This review article addresses the antioxidant properties of different natural products, including ascorbic acid, gallic acid, oxalic acid, L-glutathione (GSH), bacteriorhodopsin, green tea polyphenols, glucose, hydroxycinnamic acid, ethanoic acid, betanin, and L-glutathione, in the reduction of graphene oxide (rGO). rGO can cause damage to cells, including oxidative stress and inflammation, limiting its application in different sectors that use graphene, such as technologies used in medicine and dentistry. The natural substances reviewed have properties that help reduce this damage, neutralizing free radicals and maintaining cellular integrity. This survey demonstrates that the combination of these antioxidant compounds can be an effective strategy to minimize the harmful effects of rGO and promote cellular health.

Coffee is one of the main commodities around the world, being consumed in numerous countries. Compounds with biological activity are present in coffee beans, as well as the pulp and leaves of the plant, contributing richly to popular medicine for the treatment of many pathologies. One of the main compounds, caffeine is known to act on the central nervous system, as well as having effects on the cardiovascular system. The cafestol and kahweol diterpenes have a hyperlipidemic effect (increased blood cholesterol level) by increasing the low-density lipoprotein. Chlorogenic acids have a role as an anti-cancer and antioxidant agent, due to the existence of two hydroxyls in positions 3 and 4 of its chemical structure. The purpose of this chapter is to present the most recent medicinal innovations in coffee, addressing the chemical activities and mechanisms of action of its substances.

Encontro nacional de modelagem computacional e encontro de ciência e tecnologia de materiais (978-65-86084-34-4) - Síntese De Nanocompósitos Híbridos De Nanopartículas De Cufe2o4 Ancorados Em Óxido De Grafeno Reduzido Pelo Método Hidrotermal

Encontro nacional de modelagem computacional e encontro de ciência e tecnologia de materiais (978-65-86084-34-4) - Síntese Do Nanocompósito De Rgo/Mnfe2o4 Por Meio Da Rota De Síntese Hidrotérmica/Coprecipitação Para Aplicação Em Supercapacitores

Encontro Nacional de Modelagem Computacional e Encontro de Ciência e Tecnologia de Materiais (978-65-86084-34-4) - Caracterização Química E Morfológica De Óxido De Grafeno Reduzido A Partir Do Uso De Naringenina Como Agente Redutor