Data/hora: 19/05/2024 16:20:27

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Extraction of bioactive compounds and free radical scavenging activity of purple basil (Ocimum basilicum L.) leaf extracts as affected by temperature and time	
Autores: 	PEDRO,ALESSANDRA C.; MOREIRA,FERNANDA; GRANATO,DANIEL; ROSSO,NEIVA D.	
Data: 	2016-06-01	
Ano: 	2016	
Palavras-chave: 	Anthocyanins; Extraction; Pigments; Response surface methodology.	
Resumo: 	In the current study, response surface methodology (RSM) was used to assess the effects of extraction time and temperature on the content of bioactive compounds and antioxidant activity of purple basil leaf (Ocimum basilicum L.) extracts. The stability of anthocyanins in relation to temperature, light and copigmentation was also studied. The highest anthocyanin content was 67.40 mg/100 g extracted at 30 °C and 60 min. The degradation of anthocyanins with varying temperatures and in the presence of light followed a first-order kinetics and the activation energy was 44.95 kJ/mol. All the extracts exposed to light showed similar half-lives. The extracts protected from light, in the presence of copigments, showed an increase in half-life from 152.67 h for the control to 856.49 and 923.17 h for extract in the presence of gallic acid and phytic acid, respectively. These results clearly indicate that purple basil is a potential source of stable bioactive compounds.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000301055	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201620150197	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.88 n.2 2016	
Fonte: 	info:eu-repo/semantics/openAccess