Entity

Time filter

Source Type


Chiriboga M.A.,University of Lleida | Chiriboga M.A.,Institute Investigacion y Tecnologia Agroalimentarias | Schotsmans W.C.,GiMa Horticulture | Larrigaudiere C.,Institute Investigacion y Tecnologia Agroalimentarias | And 2 more authors.
ITEA Informacion Tecnica Economica Agraria | Year: 2014

This review collects all the published papers related to the postharvest application of 1-methylcyclopropene (1-MCP) on pear since 2007 to 2013. Currently, 1-MCP is commercially applied in some varieties of pears, while in others, research still continues due to the complexity of the fruit response to the treatment. A variety of factors can affect the application of 1-MCP including fruit maturity and treatment conditions. Other aspects such as the bin material and the cooling method can also play an important role. Depending on the species and cultivar treated, 1-MCP may occur a variety of physiological and biochemical responses and may affect respiration, ethylene production, oxidative metabolism, and some quality changes like color, firmness, acidity and soluble solids. Disorders and diseases can also be affected. This review compiles what is known about the technological uses of 1-MCP on pears, defines where discrepancies exist between reports, and defines areas requiring further study. Source


Chiriboga M.-A.,University of Lleida | Chiriboga M.-A.,IRTA - Institute of Agricultural-Alimentary Research and Technology | Recasens I.,University of Lleida | Recasens I.,IRTA - Institute of Agricultural-Alimentary Research and Technology | And 3 more authors.
Postharvest Biology and Technology | Year: 2012

To better understand physiological response to cold stress and physiological changes triggered by 1-MCP treatment in relation to softening recovery, 'Conference' pears were harvested in three orchards, at three maturities and treated with 0.3μLL-1 1-MCP for 24h. Changes in 1-aminocyclopropane carboxylic acid (ACC) and malonyl-ACC (MACC) levels, ACC synthase (ACS) and ACC oxidase (ACO) activity were followed during cold storage and 2 weeks of further ripening at 20°C. Cold storage induced significant changes in ACC metabolism which depended on the maturity of the fruit at harvest and to a lesser extent on the orchard location. In control fruit, ripening behaviour upon removal from cold storage directly relied on the amount of ACC accumulated during cold storage as well as on harvest maturity-dependent increases in ACO and the capacity to convert ACC to MACC. Similar to control fruit, the increase of ACC levels during cold storage determined the further softening behaviour of 1-MCP treated fruit. However, in 1-MCP treated fruit, malonylation had a more limited role and the capacity of the fruit to recover softening was directly related to the inhibition of ACO and mainly to the residual ACS activity which was maintained after 1-MCP treatment during cold storage. © 2012 Elsevier B.V.. Source


Chiriboga M.-A.,University of Lleida | Chiriboga M.-A.,IRTA - Institute of Agricultural-Alimentary Research and Technology | Gine Bordonaba J.,IRTA - Institute of Agricultural-Alimentary Research and Technology | Schotsmans W.C.,GiMa Horticulture | And 3 more authors.
LWT - Food Science and Technology | Year: 2013

Antioxidant metabolism and changes in membrane permeability were studied during cold storage and shelf life in 'Conference' pears. The fruit were harvested at different harvest dates and growing locations and treated with 300 nL L-1 of 1-methylcyclopropene (1-MCP). 1-MCP-treated fruit exhibited higher superoxide dismutase (SOD) and catalase (CAT) activity, together with higher ascorbic acid levels during cold storage. During shelf-life, the 1-MCP treatment reduced the electrolyte leakage and improved the capacity of the fruit to remove reactive oxygen species by increasing SOD, CAT and peroxidase (POX) activities. The effect of 1-MCP treatment on the antioxidant metabolism differed between orchards but not between harvest dates. © 2012 Elsevier Ltd. Source


Chiriboga M.-A.,University of Lleida | Chiriboga M.-A.,IRTA - Institute of Agricultural-Alimentary Research and Technology | Schotsmans W.C.,GiMa Horticulture | Larrigaudiere C.,IRTA - Institute of Agricultural-Alimentary Research and Technology | And 3 more authors.
Journal of the Science of Food and Agriculture | Year: 2013

Background: In some pear varieties like 'Conference', 1-methylcyclopropene (1-MCP) treatment often impairs the ripening process indefinitely and the pears remain 'evergreen'. To better understand this behaviour, the influence of the harvest date, orchard location and year on the effectiveness of 1-MCP treatment was investigated. Results: Pear softening was inhibited by 1-MCP treatment and the effectiveness of the treatment depended on harvest date, orchard location and year. Differences in the rate of softening in 1-MCP-treated pears depended mainly on the fruit physiological maturity at the moment of 1-MCP treatment. Accordingly, the combination of the Streif index and ethylene production at harvest appeared to be able to predict the evergreen behaviour. Treated pears with a low Streif index (<0.8) and high ethylene production at harvest (≥0.23 μL kg-1 h-1) maintain significantly high firmness but did soften during shelf life, reaching acceptable eating quality. Conclusion: Evergreen behaviour was mainly influenced by the initial fruit maturity and especially by the ability of the fruit to produce ethylene at the moment of treatment. More mature fruit were able to overcome the inhibition by 1-MCP, and the solution to prevent evergreen behaviour therefore lies in the adequate determination of harvest maturity. © 2012 Society of Chemical Industry. Source

Discover hidden collaborations