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      Aplicación de hidroenfriamiento y una cubierta de HPMC-parafina para aumentar la vida de anaquel de melón Cantaloupe Translated title: Application of hydro-cooling and an HPMC paraffin coat to increase the shelf life of Cantaloupe melon

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          Abstract

          El melón Cantaloupe es un fruto de consumo popular con problemas de comercialización debido a su reducida vida de anaquel. Para alargar este periodo se evaluó el efecto del hidroenfriamiento (HIDRO), de una película comestible a base de hidroxipropilmetilcelulosa o parafina (PEL) y de la combinación de ambos (HIPEL) sobre la pérdida de peso (PP), textura, índice de daño por frío (IDF), acidez titulable (AT), sólidos solubles (SS) y la producción (al exterior) de co2 y etileno; así como la concentración de CO2, O2 y etileno en el interior del fruto. Después de los tratamientos los frutos se almacenaron (8 °C, 20 días) y evaluaron (días 0, 4, 8, 12, 16 y 20). Los frutos de PEL tuvieron menor (P > 0.05) PP, AT e IDF y mayores valores (P < 0.05) de textura y CO2, O2 y etileno interno de los tratamientos. El hidroenfriamiento no tuvo efecto sobre las variables medidas (P > 0.05). Las muestras de HIPEL tuvieron un comportamiento similar a las de PEL (P > 0.05). Los resultados sugieren que la aplicación de cubiertas de hidroxipropilmetilcelulosa (HPMC) con parafína puede aumentar la vida de anaquel de melón Cantaloupe almacenado a temperaturas de refrigeración.

          Translated abstract

          Cantaloupe melon is a popular fruit with a limited shelf life. The effect of hydro-cooling (HIDRO), of an edible coating based on hydroxypropylmethyl-cellulose and paraffin (PEL) and of these two combined (HIPEL) on weight loss (WL), texture, chilling injury index (CM), titratable acidity (TA), soluble solids (SS) and the production of CO2 and ethylene (to the exterior), as well as the CO2, O2 and ethylene concentration inside the fruit, was evaluated in order to increase the fruit's shelf life. The fruit was stored (8 °C, 20 days) and analysed (0, 4, 8, 12, 16 and 20 days) after treatment. The PEL fruit had a lower (p < 0.05) WL, TA and CM, and greater values (p < 0.05) of texture and internal CO2, O2 and ethylene than the controls and the HIDRO. The SS and the CO2, O2 and ethylene production presented no difference (p > 0.05) among treatments. Hydro-cooling had no effect on the recorded variables (p > 0.05). The HIPEL samples had similar values to the PEL samples (p > 0.05). The results suggest that an hydroxypropylmethyl-cellulose (HPMC) coating with paraffin may increase the shelf life of the Cantaloupe melon stored in refrigeration.

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          Most cited references74

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          Chilling injury in peach and nectarine

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            A reevaluation of the key factors that influence tomato fruit softening and integrity.

            The softening of fleshy fruits, such as tomato (Solanum lycopersicum), during ripening is generally reported to result principally from disassembly of the primary cell wall and middle lamella. However, unsuccessful attempts to prolong fruit firmness by suppressing the expression of a range of wall-modifying proteins in transgenic tomato fruits do not support such a simple model. 'Delayed Fruit Deterioration' (DFD) is a previously unreported tomato cultivar that provides a unique opportunity to assess the contribution of wall metabolism to fruit firmness, since DFD fruits exhibit minimal softening but undergo otherwise normal ripening, unlike all known nonsoftening tomato mutants reported to date. Wall disassembly, reduced intercellular adhesion, and the expression of genes associated with wall degradation were similar in DFD fruit and those of the normally softening 'Ailsa Craig'. However, ripening DFD fruit showed minimal transpirational water loss and substantially elevated cellular turgor. This allowed an evaluation of the relative contribution and timing of wall disassembly and water loss to fruit softening, which suggested that both processes have a critical influence. Biochemical and biomechanical analyses identified several unusual features of DFD cuticles and the data indicate that, as with wall metabolism, changes in cuticle composition and architecture are an integral and regulated part of the ripening program. A model is proposed in which the cuticle affects the softening of intact tomato fruit both directly, by providing a physical support, and indirectly, by regulating water status.
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              Effect of down-regulation of ethylene biosynthesis on fruit flavor complex in apple fruit.

              The role of ethylene in regulating sugar, acid, texture and volatile components of fruit quality was investigated in transgenic apple fruit modified in their capacity to synthesize endogenous ethylene. Fruit obtained from plants silenced for either ACS (ACC synthase; ACC-1-aminocyclopropane-1-carboxylic acid) or ACO (ACC oxidase), key enzymes responsible for ethylene biosynthesis, expectedly showed reduced autocatalytic ethylene production. Ethylene suppressed fruits were significantly firmer than controls and displayed an increased shelf-life. No significant difference was observed in sugar or acid accumulation suggesting that sugar and acid composition and accumulation is not directly under ethylene control. Interestingly, a significant and dramatic suppression of the synthesis of volatile esters was observed in fruit silenced for ethylene. However, no significant suppression was observed for the aldehyde and alcohol precursors of these esters. Our results indicate that ethylene differentially regulates fruit quality components and the availability of these transgenic apple trees provides a unique resource to define the role of ethylene and other factors that regulate fruit development.
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                Author and article information

                Journal
                uc
                Universidad y ciencia
                Universidad y ciencia
                Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado (Villahermosa, Tabasco, Mexico )
                0186-2979
                August 2013
                : 29
                : 2
                : 179-190
                Affiliations
                [01] orgnameUniversidad Juárez del Estado de Durango orgdiv1Facultad de Ciencias Químicas
                [02] San Nicolás de los Garza Nuevo León orgnameUniversidad Autónoma de Nuevo León orgdiv1Facultad de Ciencias Biológicas México jameza20002000@ 123456yahoo.com.mx
                Article
                S0186-29792013000200007 S0186-2979(13)02900200007
                686583b6-3e20-4387-b0f6-af55a0c5d677

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : 19 June 2010
                : 25 June 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 42, Pages: 12
                Product

                SciELO Mexico

                Categories
                Artículos

                cubiertas comestibles,hidroenfriamiento,hidroxipropilmetilcelulosa,Melón,edible coating,hydro-cooling,hydroxypropylmethyl-cellulose,Melon

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