Combination of nitric oxide and 1-MCP on postharvest life of the blueberry (Vaccinium spp.) fruit

GERGOFF GROZEFF, GUSTAVO; ALEGRE, MATÍAS LEONEL; SENN, MARÍA EUGENIA; CHAVES, ALICIA; SIMONTACCHI, MARCELA; BARTOLI, CARLOS GUILLERMO

POSTHARVEST BIOLOGY AND TECHNOLOGY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017 vol. 133 p. 72 - 80

0925-5214

Blueberries area perishable fruit that loses its firmness and weight rapidly after harvest.High concentrations of ascorbic acid (AA) and phenolic compounds such asanthocyanins are important attributes contributing to the quality of the fruit.The aim of this work is to extend the postharvest life of three blueberriescultivars; `Misty´ and `Blue Cuinex´, firm and soft cultivars respectively and`Blue Chip´ with intermediate firmness. The fruit was treated separately or incombination with a nitric oxide donor, S-nitrosoglutathione (GSNO) and1-methylcyclopropene (1-MCP) and stored at 4ºC for 14 d. The best treatment for`Blue Cuinex´ was the combination of 1-MCP and GSNO, while `Misty´ softenedslower when treated with 1-MCP, and `Blue Chip´ was not affected by treatment.The 1-MCP + GSNO treatment maintained higher concentrations of AA and GSH in`Blue Cuinex´. AA concentrations declined in `Misty´ but did not respond toGSNO. The combination of 1-MCP and GSNO extended the postharvest life of `BlueCuinex´ by improving the concentrations of AA and glutathione in the berriesbut not for `Misty´. These results demonstrate that blueberry cultivars responddifferentially to 1-MCP and nitric oxide, and that the sequence of applicationcould be used to slow fruit softening and maintain antioxidant properties.