Data/hora: 09/06/2024 17:30:34

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Extraction yield, antioxidant activity andphenolics from grape, mango and peanut agro-industrial by-products	
Autores: 	Braga,Gilberto Costa; Melo,Priscilla Siqueira; Bergamaschi,Keityane Boone; Tiveron,Ana Paula; Massarioli,Adna Prado; Alencar,Severino Matias de.	
Data: 	2016-08-01	
Ano: 	2016	
Palavras-chave: 	Total phenolics; Total flavonoids; Ethanolic extraction.	
Resumo: 	ABSTRACT: The objective of this study was to determine and correlate the extraction yields, antioxidant activity, total phenolics and total flavonoids from grape, mango and peanut agro-industrial by-products. The β-carotene/linoleic acid autoxidation system and scavenging capacity for DPPH and ABTS free radicals assays were used. The results were expressed in terms of lyophilized sample or dry extract. Mango bagasse exhibited the highest extraction yield (37.07%) followed by peanut skin (15.17%) and grape marc (7.92%). In terms of lyophilized sample, total phenolics did not vary significantly among the residues evaluated (average of 60.33mg EAG g-1); however, when they were expressed as dry extract grape marc exhibited the highest total phenolic (768.56±116.35mg GAE g-1), followed by peanut skin (404.40±13.22mg GAE g-1) and mango bagasse (160.25±4.52mg GAE g-1), Peanut skin exhibited the highest content of total flavonoids (2.44mg QE g-1), while grape marc (1.76mg QE g-1) and mango bagasse (1.70 mg QE g-1) showed no significant differences. The extraction yield showed strong negative linear correlation with total phenolic and total flavonoid. This study showed that peanut skin was the sample with the highest antioxidant activity and it was strongly influenced by total flavonoids. All extracts of byproducts showed antioxidant activity comparable to α-tocopherol, and they can be a source of natural compounds with potential to replace synthetic antioxidants such as BHT.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801498	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20150531	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.46 n.8 2016	
Fonte: 	info:eu-repo/semantics/openAccess