Data/hora: 01/06/2024 13:28:00

Biblioteca(s): 	Embrapa Amazônia Ocidental.	
Data corrente: 	22/02/2024	
Data da última atualização: 	22/02/2024	
Autoria: 	NEVES, K. O. G.; SANTOS, M. F. C.; MAR, J. M.; PONTES, F. L. D.; TORMENA, C. F.; CHAVES, F. C. M.; CAMPOS, F. R.; SANCHES, E. A.; BEZERRA, J. A.; MACHADO, M. B.; SANTOS, A. D. C.	
Afiliação: 	KIDNEY O. G. NEVES, UNIVERSIDADE FEDERAL DO AMAZONAS; MARIA F. C. SANTOS, UNIVERSIDADE ESTADUAL DE CAMPINAS; JOSIANA M. MAR, UNIVERSIDADE FEDERAL DO AMAZONAS; FLÁVIA L. D. PONTES, UNIVERSIDADE FEDERAL DO PARANÁ; CLAUDIO F. TORMENA, UNIVERSIDADE ESTADUAL DE CAMPINAS; FRANCISCO CELIO MAIA CHAVES, CPAA; FRANCINETE R. CAMPOS, UNIVERSIDADE FEDERAL DO PARANÁ; EDGAR APARECIDO SANCHES, UNIVERSIDADE FEDERAL DO AMAZONAS; JAQUELINE A. BEZERRA, Instituto Federal de Educação, Ciência e Tecnologia do Amazonas; MARCOS B. MACHADO, UNIVERSIDADE FEDERAL DO AMAZONAS; ALAN D. C. SANTOS, UNIVERSIDADE FEDERAL DO AMAZONAS.	
Título: 	1H NMR chemical profile and antioxidant activity of Eugenia punicifolia extracts over seasons: a metabolomic pilot study.	
Ano de publicação: 	2024	
Fonte/Imprenta: 	Journal of the Brazilian Chemical Society, v. 35, n. 7, e-20240010, 2024.	
DOI: 	https://dx.doi.org/10.21577/0103-5053.20240010	
Idioma: 	Inglês	
Conteúdo: 	Eugenia punicifolia (Kunth) DC. is a medicinal plant used to treat diseases related to oxidative processes. In this work, H-1 nuclear magnetic resonance (NMR) spectroscopy and multivariate analysis have been employed to track the chemical changes and antioxidant activity of dimethyl sulfoxide (DMSO) extracts from E. punicifolia leaves over seasons. Principal component analysis (PCA) applied to H-1 NMR allowed discriminating DMSO extracts from leaves collected in the dry and rainy seasons and pointed out sucrose, catechin, and epicatechin as responsible for separating dry season samples and quercetin, acid gallic, glucose, and fatty acids contributed for rainy samples grouping. Notably, antioxidant assays revealed that dry season extracts exhibited a higher radical scavenging capacity. When those compounds were submitted to partial least squares-discriminant analysis (PLS-DA) only sucrose and fatty acids presented variable importance projection (VIP) score > 1, both metabolites are related somehow to the defense mechanisms of the plant. This pilot study may suggest new experimental approaches for more effectively monitoring the spectrum-effect relationship of E. punicifolia leaf extracts.	
Palavras-Chave: 	Eugenia punicifolia; Medicinal plant.	
Thesagro: 	Myrtaceae; Planta Medicinal.	
Thesaurus Nal: 	Chromatography; Sucrose.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1162204/1/2023-0321AR-YougSci.pdf	
Registro original: 	Embrapa Amazônia Ocidental (CPAA)	
Exemplares: 	CPAA - (39181-1) - UPC - AP - DD -  -  -  - DIS