Data/hora: 09/06/2024 11:40:11

Provedor de dados: 	Horticultura Brasileira	
País: 	Brazil	
Título: 	Evaluation of different oxygen, carbon dioxide and nitrogen combinations employed to extend the shelf life of fresh-cut collard greens	
Autores: 	Moretti,Celso L.; Araújo,Alessandra L.; Mattos,Leonora M.	
Data: 	2003-12-01	
Ano: 	2003	
Palavras-chave: 	Brassica oleracea var; Acephala; Brix; Chlorophyll; Controlled atmosphere; Quality; Postharvest; Vitamin C.	
Resumo: 	Collard greens (Brassica oleracea var. acephala) "Manteiga" were harvested in commercial fields in Brasilia, Brazil, aiming to evaluate different oxygen, carbon dioxide and nitrogen combinations to extend the shelf life of the fresh-cut product. After harvest, leaves were taken to the postharvest laboratory, selected for external blemishes and minimally processed (3 mm thick) inside a cold room (13±2°C). After processing, fresh-cut collard greens were stored under two controlled atmosphere (CA) conditions (3% O2, 4% CO2; 5% O2, 5% CO2/balance N2), and normal air (control), at 5°C (95±2% RH), for six days. Daily, minimally processed collard greens were evaluated for total vitamin C, total chlorophyll, total soluble solids content, and titratable acidity. Total vitamin C content decreased for all treatments during the storage period. Storage under CA conditions delayed total vitamin C degradation for both atmospheres studied. At the end of the storage period, fresh-cut collard greens stored under 3% O2, 4% CO2 showed around 25% and 56% more vitamin C than the material stored under 5% O2, 5% CO2 and control, respectively. Total chlorophyll content decreased during the storage period. At the end of the experiment, fresh-cut collard greens stored under 3% O2, 4% CO2 showed 24% and 45% more total chlorophyll than the product stored under 5% O2, 5% CO2 and control, respectively. CA storage delayed organic acid degradation. On the sixth day, fresh-cut collard greens stored under 3% O2, 4% CO2 presented around 44% more organic acids than control. Total soluble solids content were not significantly affected.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400021	
Editor: 	Associação Brasileira de Horticultura	
Relação: 	10.1590/S0102-05362003000400021	
Formato: 	text/html	
Fonte: 	Horticultura Brasileira  v.21 n.4 2003	
Fonte: 	info:eu-repo/semantics/openAccess