Data/hora: 12/06/2024 05:49:34

Biblioteca(s): | Embrapa Agroindústria Tropical; Embrapa Unidades Centrais.
Data corrente: | 26/03/2008
Data da última atualização: | 15/06/2018
Autoria: | MORAIS, P. L. D. de; LIMA, L. C. de O.; MIRANDA, M. R. A. de; ALVES, J. D.; ALVES, R. E.; SILVA, J. D.
Afiliação: | Patricia Ligia Dantas de Morais, UFRSA; Luiz Carlos de Oliveira Lima, UFL; Maria Raquel Alcantara de Miranda, UFC; José Donizete Alves, UFC; Ricardo Elesbão Alves, CNPAT; José Daniel Silva, UFC.
Título: | Enzyme activities and pectin breakdown of sapodilla submitted to 1-methylcyclopropene.
Ano de publicação: | 2008
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v.43, n.1, p.15-20, 2008.
Idioma: | Inglês
Conteúdo: | 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 25ºC 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 25ºC. 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.
Palavras-Chave: | amadurecimento.
Thesagro: | Sapoti.
Thesaurus Nal: | beta-galactosidase; Manilkara zapota; ripening.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/41978/1/43n01a03.pdf
Registro original: | Embrapa Agroindústria Tropical (CNPAT)

Exemplares:

AI-SEDE - (41978-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPAT - (10996-1) - UPC - AP - PP - SP 04445 -  - 2009.04445 - DIS