Effect of pre-harvest and post-harvest conditions and treatments on plum fruit quality
Journal
CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources
Date Issued
January 2008
DOI
10.1079/PAVSNNR20083009
Abstract
Plums belong to the Rosaceae family and include the European species (Prunus domestica L.), which
is consumed fresh or dried, and the Japanese species (Prunus salicina Lindell), mainly freshly consumed. Plums are considered climacteric, although some plum cultivars do not show the typical
increase in ethylene production and respiration until late ripening. They respond to exogenous
ethylene, which is a key ripening regulator, while treatments with 1-methylcyclopropene (1-MCP),
an ethylene action inhibitor, are effective in delaying fruit ripening. Plum fruit is characterized by
high softening rate and, so far, the sequence of events leading to cell wall degradation, as well as
changes in the proteins responsible for these modifications, has not been thoroughly investigated.
Post-harvest diseases (brown rot, grey mould and Rhizopous rot) are also a main concern in plum
post-harvest handling and storage. Prompt cooling and low-temperature storage (0
C) are
recommended to delay ripening and maintain plum fruit quality. However, when the fruit is held
for long periods at low temperature, chilling injury (CI) symptoms, usually manifested as translucency, bleeding, flesh browning and/or failure to ripen, might develop. Although softening can be
delayed by controlled and modified atmospheres, this technology is not widely used commercially,
since the benefits are not as pronounced as in other fruit species. Other post-harvest strategies
tested to date with apparent usefulness at a laboratory scale include heat treatment, ozone,
polyamine and calcium treatments, as well as fumigation with environmentally friendly compounds;
such strategies might be useful under particular circumstances to complement other post-harvest
treatments. Pre-harvest treatments, such as application of synthetic auxins and calcium, regulation
of canopy light conditions and orchard soil management, have been reported to affect plum fruit
quality and its post-harvest behaviour. Overall, the present review discusses the influence of field
and post-harvest practices on plum fruit quality and market life.
is consumed fresh or dried, and the Japanese species (Prunus salicina Lindell), mainly freshly consumed. Plums are considered climacteric, although some plum cultivars do not show the typical
increase in ethylene production and respiration until late ripening. They respond to exogenous
ethylene, which is a key ripening regulator, while treatments with 1-methylcyclopropene (1-MCP),
an ethylene action inhibitor, are effective in delaying fruit ripening. Plum fruit is characterized by
high softening rate and, so far, the sequence of events leading to cell wall degradation, as well as
changes in the proteins responsible for these modifications, has not been thoroughly investigated.
Post-harvest diseases (brown rot, grey mould and Rhizopous rot) are also a main concern in plum
post-harvest handling and storage. Prompt cooling and low-temperature storage (0
C) are
recommended to delay ripening and maintain plum fruit quality. However, when the fruit is held
for long periods at low temperature, chilling injury (CI) symptoms, usually manifested as translucency, bleeding, flesh browning and/or failure to ripen, might develop. Although softening can be
delayed by controlled and modified atmospheres, this technology is not widely used commercially,
since the benefits are not as pronounced as in other fruit species. Other post-harvest strategies
tested to date with apparent usefulness at a laboratory scale include heat treatment, ozone,
polyamine and calcium treatments, as well as fumigation with environmentally friendly compounds;
such strategies might be useful under particular circumstances to complement other post-harvest
treatments. Pre-harvest treatments, such as application of synthetic auxins and calcium, regulation
of canopy light conditions and orchard soil management, have been reported to affect plum fruit
quality and its post-harvest behaviour. Overall, the present review discusses the influence of field
and post-harvest practices on plum fruit quality and market life.