Data/hora: 05/06/2024 17:15:53

Provedor de dados: | 86
País: | Brazil
Título: | Enzyme activities and pectin breakdown of sapodilla submitted to 1-methylcyclopropene
Autores: | Morais,Patrícia Lígia Dantas de; Lima,Luiz Carlos de Oliveira; Miranda,Maria Raquel Alcântara de; Alves,José Donizete; Alves,Ricardo Elesbão; Silva,José Daniel.
Data: | 2008-01-01
Ano: | 2008
Palavras-chave: | Manilkara zapota; Beta-galactosidase; Ripening.
Resumo: | The objective of this work was to investigate the influence of 1-methylcyclopropene (1-MCP) at 300 nL L-1 on activities of cell wall hidrolytic enzymes and pectin breakdown changes which Sapodilla (Manilkara zapota cv. Itapirema 31) cell wall undergoes during ripening. Sapodilla were treated with ethylene antagonist 1-MCP at 300 nL L-1 for 12 hours and then, stored under a modified atmosphere at 25º C for 23 days. Firmness, total and soluble pectin and cell wall enzymes were monitored during storage. 1-MCP at 300 nL L-1 for 12 hours delayed significantly softening of sapodilla for 11 days at 25º C. 1-MCP postharvest treatment affected the activities of cell wall degrading enzymes pectinmethylesterase and polygalacturonase and completely suppressed increases in beta-galactosidase for 8 days, resulting in less pectin solubilization. Beta-galactosidase seems relevant to softening of sapodilla and is probably responsible for modification of both pectin and xyloglucan-cellulose microfibril network.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000100003

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2008000100003
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.43 n.1 2008
Fonte: | info:eu-repo/semantics/openAccess