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Development of disposable sensors based on 3D graphene oxide, metal nanoparticles and molecularly imprinted polymers for the determination of phenolic acids in fruticulture waste

Grant number: 19/13818-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): January 01, 2020
Effective date (End): February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Nelson Ramos Stradiotto
Grantee:Edervaldo Buffon
Home Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
Associated research grant:17/22401-8 - Fruit-refinery: obtention processes, characterization methods and generation of products derived from residues of the fruitculture, AP.TEM

Abstract

The production and processing of fruits are important activities for the Brazilian economy. However, the processing of fruit generates a large amount of waste, which when discarded in inappropriate places, causes a major environmental problem. Orange and banana are the most produced and consumed fruits in the Brazilian territory, and the residues generated by the processing of these fruits are composed mainly of peels; which, in turn, are rich in phenolic acids. Among the phenolic acids found in banana and orange peels; ferulic, vanillic and p-coumaric acids can be highlighted, since they are used by the food, pharmaceutical and cosmetic industries to obtain a wide variety of products. In view of the reuse of banana and orange peels, the phenolic acids found in these residues can be extracted and used to obtain higher-added value products, which gives these substances a more profitable and environmentally friendly destination. In this context, the characterization of banana and orange peels for later reuse is of fundamental importance; thus, the objective of this research project is the development of disposable electrochemical sensors based on 3D graphene oxide, metal nanoparticles and molecularly imprinted polymers for the determination of ferulic, vanillic and p-coumaric acids in these fruticulture waste. (AU)