1-Methyl cyclopropene extends postharvest life of spinach leaves

GERGOFF GROZEFF, GUSTAVO; MICIELI, MARÍA E.; GÓMEZ, FACUNDO; FERNÁNDEZ, LAURA V.; GUIAMET, JUAN J.; CHAVES, ALICIA R.; BARTOLI, CARLOS G.

POSTHARVEST BIOLOGY AND TECHNOLOGY

Elsevier

Lugar: Amsterdam; Año: 2010 vol. 55 p. 182 - 185

0925-5214

Senescence of detached spinach leaves either untreated or treated with 0.1 or 1.0 µLL-1 1-MCP has been investigated. 1-MCP treated leaves had higher chlorophyll content and photosystem II potential quantum yield (Fv/Fm) and lower solute leakage than untreated leaves after storage in darkness at 23ºC for 6d, indicating a delay of senescence. Ethylene production was increased in spinach supplemented with 1-MCP after 3 d storage and then declined to the rates of untreated leaves. 1-MCP treated spinach had higher ascorbic acid and glutathione concentrations, and a low oxidised/reduced ratio for both antioxidants. Accumulations of ammonium and protein degradation were reduced by 1-MCP. The results presented here indicate that inhibition of ethylene sensitivity can be successfully used to extend the postharvest life of spinach leaves.