Data/hora: 23/09/2024 19:50:37

Biblioteca(s): 	Embrapa Uva e Vinho.	
Data corrente: 	15/10/2021	
Data da última atualização: 	15/10/2021	
Autoria: 	LIMA, M. dos S.; PEREIRA, G. E.; FEDRIGO, I. M. T.	
Afiliação: 	MARCOS DOS SANTOS LIMA, Department of Food Technology, Federal Institute of Sertão Pernambucano, Campus Petrolina, BR 407 km 08 RdJardim São Paulo, Petrolina, PE 56314-522, Brazil; GIULIANO ELIAS PEREIRA, CNPUV; ISABELA MAIA TOALDO FEDRIGO, Department of Food Science and Technology, Federal University of Santa Catarina, Admar Gonzaga Rd., 1346, Itacorubi, Florianópolis, SC 88034-001, Brazil.	
Título: 	Artifcial neural network: a powerful tool in associating phenolic compounds with antioxidant activity of grape juices.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Food Analytical Methods, 14 oct. 2021. Online.	
DOI: 	10.1007/s12161-021-02144-8	
Idioma: 	Inglês	
Conteúdo: 	In vitro techniques are essential to assess the antioxidant potential of foods, although methods with diferent action mechanisms make troublesome data analysis. This article describes the use of artifcial neural network (ANN) to associate phenolic compounds with antioxidant activity in vitro (AOX) of grape juices. A multilayer perceptron (MLP) ANN was obtained with 28 phenolics quantifed, as input layers, and AOX measuring by DPPH, ABTS, FRAP, H2O2, and &#946;-carotene/linoleic acid bleaching assay (&#946;CLA) methods, as output layers. To improve discussion in food sciences, the ANN results were compared with Pearson?s correlation and principal component analysis (PCA), methods largely used in food studies. Pearson?s technique showed correlations between antioxidant methods and some of the phenolic compounds, but with limitations. PCA proved to be a more powerful method than Pearson?s correlation, as it positively associated 13 phenolics with four out of fve antioxidant methods. The MLP-ANN allowed simultaneous association of 19 individual phenolics, while a single hidden layer predicted 15 phenolics with simultaneous action in all AOX methods. The power of association was: ANN>PCA>Pearson. It was evidenced that ANN is a powerful tool for screening antioxidants in diferent AOX systems, which is applicable in health interests.	
Palavras-Chave: 	Antioxidant methods; Bioactivity; Grape polyphenol.	
Thesaurus Nal: 	Chemometrics.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/226970/1/SantosLima2021-Article-ArtificialNeuralNetworkAPowerf.pdf	
Registro original: 	Embrapa Uva e Vinho (CNPUV)	
Exemplares: 	CNPUV - (18720-1) - UPC - AP - DD -  -  -  - DIS