1-methylcyclopropene (1-MCP) has obvious effects on delaying the ripening of harvested banana fruit.
However, improper concentration, treatment time and handling methods could affect normal ripening,
yellowing, softening and formation of volatiles, which are important components of banana fruit quality.
This study was performed to screen and test the effect of a combination of low concentration ethephon
with 1-MCP on the ripening of banana fruit, as well as on physiological and biochemical changes. The
results showed that a combination of 50 mL L1 ethephon with 400 nL L1 1-MCP (16 h) was the most
suitable treatment, which significantly delayed the ripening and maintained the commodity value of
harvested banana fruit without detrimentally affecting normal ripening after ripening acceleration
treatment. This treatment effectively delayed and decreased respiration rate and ethylene production,
inhibited the activity of pectin lyase (PL), pectin methylesterase (PME), cellulase (CX) and
polygalacturonase (PG), and delayed the peak activity of ACC synthase (ACS) and ACC oxidase (ACO).
It also delayed the formation of volatile compounds, but did not detrimentally affect the amount of
volatiles, especially the esters. The combined treatment significantly delayed the ripening and prolonged
the shelf life of banana fruit with normal coloring and volatile development, which effectively
maintained the commercial value of banana fruit.
1-methylcyclopropene (1-MCP) has obvious effects on delaying the ripening of harvested banana fruit.However, improper concentration, treatment time and handling methods could affect normal ripening,yellowing, softening and formation of volatiles, which are important components of banana fruit quality.This study was performed to screen and test the effect of a combination of low concentration ethephonwith 1-MCP on the ripening of banana fruit, as well as on physiological and biochemical changes. Theresults showed that a combination of 50 mL L1 ethephon with 400 nL L1 1-MCP (16 h) was the mostsuitable treatment, which significantly delayed the ripening and maintained the commodity value ofharvested banana fruit without detrimentally affecting normal ripening after ripening accelerationtreatment. This treatment effectively delayed and decreased respiration rate and ethylene production,inhibited the activity of pectin lyase (PL), pectin methylesterase (PME), cellulase (CX) andpolygalacturonase (PG), and delayed the peak activity of ACC synthase (ACS) and ACC oxidase (ACO).It also delayed the formation of volatile compounds, but did not detrimentally affect the amount ofvolatiles, especially the esters. The combined treatment significantly delayed the ripening and prolongedthe shelf life of banana fruit with normal coloring and volatile development, which effectivelymaintained the commercial value of banana fruit.
การแปล กรุณารอสักครู่..