Identification of preharvest factors determining postharvest ripening behaviors in ‘Hass’ avocado under long term storage

Rivera, Sebastián; Ferreyra, R.; Robledo, Paula; Selles, Gabriel; Arpaia, Mary Lu; Saavedra, Jorge; Defilippi, Bruno G.

doi:10.1016/j.scienta.2016.12.024

Cited by 39 publications

(31 citation statements)

References 29 publications

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“…e relative humidity (RH) values for RA and CA were 80-85% and higher than 90%, respectively. Evaluations were performed after 30 and 50 d, and after each storage time, fruit samples were maintained at 20°C and 45% RH (shelf life) until reaching the ready-to-eat stage (firmness less than or equal to 9.8N) [3]. For 1-MCP application at harvest, 1-MCP (SmartFresh ™ and Agrofresh) was applied in a sealed container at 300 ppb.…”

Section: Methodsmentioning

confidence: 99%

“…Among these quality attributes, the changes during ripening are modulated by ethylene, with pulp softening and skin color being the most studied due to their importance in limiting storage potential and commercialization. Additionally, changes in quality attributes are affected by growing conditions during fruit development on the tree, i.e., cultural management and climatic conditions, and especially by factors during harvest and storage, such as maturity stage, temperature, relative humidity, length of storage, or postharvest technologies used during this period, among others [3].…”

Section: Introductionmentioning

confidence: 99%

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Effects of 1-Methylcyclopropene and Controlled Atmosphere on Ethylene Synthesis and Quality Attributes of Avocado cvs. Edranol and Fuerte

Olivares

Alvarez

Véliz

et al. 2020

Journal of Food Quality

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Avocado production worldwide relies on several varieties, with “Hass” being the most commercialized; however, the available genotypes include a number of green-skin varieties with important roles in several countries. Because many technologies have already been developed in “Hass” avocado, the main objective of this study was to evaluate the effects of controlled atmosphere (CA) storage and 1-methylcyclopropene (1-MCP) application during long-term storage of “Edranol” and “Fuerte” avocados. Fruits of both varieties were harvested at two maturity stages: an early harvest close to 20–23% dry matter (DM) content and another after two months, with 22% and 32% DM content for Edranol and Fuerte, respectively. After harvest, the fruit was stored under the following conditions: (i) regular air storage (RA), (ii) CA with 4% O2 and 6% CO2, and (iii) 1-MCP applied at 300 ppm. Avocados were stored at 5°C and 85% relative humidity. Physiological and quality evaluations were performed immediately after 30 and 50 days; afterwards, the avocados were maintained at 20°C (shelf life) until they reached the ready-to-eat stage. Ethylene synthesis was assessed by measuring the transcript accumulation of the ACO and ACS genes. The two varieties showed distinct respiration and ethylene production rates during ripening, and fruit stored under CA or after application of 1-MCP showed lower respiration rates than fruit stored under RA, with the lowest rate in 1-MCP-treated avocados. ACS and ACO transcript levels were also lower under both conditions. CA and 1-MCP were very effective tools for extending storage life mainly by reducing the fruit softening rate and the incidence of pulp disorders in both varieties, and interestingly, these techniques did not severely affect the days to reach the ready-to-eat stage. Therefore, the use of CA and 1-MCP technologies in “Fuerte” and “Edranol” seems to be suitable for maintaining quality through 50 days of storage.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of 1-Methylcyclopropene and Controlled Atmosphere on Ethylene Synthesis and Quality Attributes of Avocado cvs. Edranol and Fuerte

Olivares

Alvarez

Véliz

et al. 2020

Journal of Food Quality

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“…One of the most relevant parameters that affect fruit quality identified in this study was associated with fruit ripening for consumption. It is evident that some of the most important challenges the Colombian Hass avocado industry has is offering consumers a healthy product with homogeneous ripening [15,45]. This is due to the fact that avocado is a climacteric fruit whose consumption ripening is achieved several days after its harvest [46] and its final quality depends largely on its pre-harvest conditions [24,47,48].…”

Section: Discussionmentioning

confidence: 99%

Causes of Hass Avocado Fruit Rejection in Preharvest, Harvest, and Packinghouse: Economic Losses and Associated Variables

2019

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The areas planted with avocado in Colombia have increased to position this fruit in international markets. To achieve this goal, the offered fruits need to meet optimal production standards. The aim of this study was to identify the main physiopathologies and damages that may cause the rejection of avocado cv. Hass fruits for export purposes during pre-harvest, harvest, and processing in packinghouses, and quantify the economic impact of said exclusion criteria. Typological characterization and quantification of damages that may cause fruit rejection were performed at the laboratory, field, and packinghouses. Data were obtained from 136 Colombian productive plots with monitoring and data collection records for a minimum of five years. At the packinghouse level, data associated with factors that affect quality (both, those identified at packing plants and those detected in simulated shipments) were considered. The main causes of fruit rejection during pre-harvest and harvest were: low calibers, damage to the epidermis by insect pests from the subfamily Melolonthidae, thrips, mites, the bug Monalonion, overripe fruits, and sunburn damage. In addition, pathologies such as anthracnose and stem end rot, and problems associated with browning of vascular bundles, irregular ripening, chilling injury, and lenticel damage were highly limiting at packinghouses. The economic analysis identified losses of 5.78 and 5.68% in farms and packinghouses, respectively, which are equivalent to US dollar (USD) 80.29 per produced ton. This work generated information that allows prioritizing strategies to improve fruit quality and reduce economic impact.

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“…Se ha reportado que la deficiencia de calcio está relacionada con el suministro requerido y adecuado en la etapa de crecimiento (Álvarez et al, 2008). También se sabe que aplicaciones de CaCl2 en postcosecha aumenta la concentración de calcio en frutos y demora la maduración (Rivera et al, 2017). White et al (2013) la deficiencia de calcio en hojas jóvenes, tejidos de almacenamiento y frutos puede originarse por baja transpiración y distribución de calcio transportado por flujo de masas entre los tejidos, ya que entre 85-93% del suministro total de calcio a la planta, va directamente a las hojas maduras y muy poco calcio al fruto y otros tejidos ( Álvarez et al, 2008;Montanaro et al, 2014).…”

Section: Introductionunclassified

Cambios celulares en hojas de aguacate con deficiencias de calcio

Maldonado-Torres

Álvarez-Sánchez

Abarca-Cervantes

et al. 2020

Remexca

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La deficiencia de calcio origina susceptibilidad a enfermedades fisiológicas en frutos y reducción de rendimiento, además de generar enroscamiento, clorosis y disminución en el crecimiento de hojas jóvenes. En el presente trabajo fue realizado en el año 2017, donde se obtuvieron medidas estructurales y ultraestructurales celulares de hojas de aguacate, mediante un microscopio electrónico de barrido y transmisión respectivamente y se correlacionaron con la concentración nutrimental foliar. Se observó que el grosor de la hoja, el largo del parénquima esponjoso más epidermis y el largo y ancho de parénquima en empalizado no tuvieron afectación significativa con la concentración de calcio solo, pero sí con las relaciones nutrimentales: BxCa, KxCa, ZnxCa, Mn/Ca y Ca/Mn. El ancho de la pared celular fue afectado por las relaciones con magnesio: Mn/Ca y Ca/Mn.

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Identification of preharvest factors determining postharvest ripening behaviors in ‘Hass’ avocado under long term storage

Cited by 39 publications

References 29 publications

Effects of 1-Methylcyclopropene and Controlled Atmosphere on Ethylene Synthesis and Quality Attributes of Avocado cvs. Edranol and Fuerte

Effects of 1-Methylcyclopropene and Controlled Atmosphere on Ethylene Synthesis and Quality Attributes of Avocado cvs. Edranol and Fuerte

Causes of Hass Avocado Fruit Rejection in Preharvest, Harvest, and Packinghouse: Economic Losses and Associated Variables

Cambios celulares en hojas de aguacate con deficiencias de calcio

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