Changes in cell wall pectins and their relation to postharvest mesocarp softening of “Hass” avocados ( Persea americana Mill.)

Defilippi, Bruno G.; Ejsmentewicz, Troy; Covarrubias, María Paz; Gudenschwager, Orianne; Campos-Vargas, Reinaldo

doi:10.1016/j.plaphy.2018.05.018

Cited by 78 publications

(35 citation statements)

References 36 publications

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“…Fruits stored under CA and treated with 1-MCP took 7 and 10 d to reach the ready-to-eat stage after cold storage (Table 6). Similar results have been reported for "Hass" avocados [13]. Fruits stored under RA at 5°C for 3.5 weeks began to soften during storage and reached the ready-to-eat stage a week later when exposed to 20°C [26].…”

Section: Expression Patterns Of Genes Involved In Ethylene Biosynthesissupporting

confidence: 85%

“…To understand the changes in avocado texture in 1-MCP-treated fruit, previous results indicated that polygalacturonase (PG) activity correlated with a decrease in galacturonic acid in the avocado cell wall material. 1-MCP application modified the PG and pectin methyl esterase (PME) activities from those observed in untreated fruit, but when avocados were soft (19.6 N), the PG and PME activities were equal to those in control fruit not treated with 1-MCP [12,13].…”

Section: Expression Patterns Of Genes Involved In Ethylene Biosynthesismentioning

confidence: 89%

“…For "Edranol" avocados, the flesh firmness of the fruit stored under RA showed a significant decrease from 200 N at harvest to 20 N after 50 d of storage (Figures 2(c) e firmness retention in both cultivars was significantly enhanced in response to 1-MCP treatment, mainly due to the high ethylene dependency of this quality attribute in avocado [13]. Similar effects of 1-MCP in delaying avocado fruit softening have been observed for the "Hass" cultivar [8,26].…”

Section: Expression Patterns Of Genes Involved In Ethylene Biosynthesismentioning

confidence: 97%

“…In avocado, 1-MCP has shown positive effects in delaying not only pulp softening and color development but also the development of physiological disorders such as internal browning [10][11][12]. However, in some varieties, such as "Hass," "Pinkerton," and "Ryan," 1-MCP has been reported to exert a negative effect by extending the time in which the fruit reaches the ready-to-eat stage, resulting in excessive water loss, uneven ripening, and decay [6,8,13]. erefore, presently, 1-MCP is used commercially in only some countries, such as South Africa, or with several restrictions in other avocado growing countries.…”

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: Expression Patterns Of Genes Involved In Ethylene Biosynthesissupporting

confidence: 85%

Section: Expression Patterns Of Genes Involved In Ethylene Biosynthesismentioning

confidence: 89%

Section: Expression Patterns Of Genes Involved In Ethylene Biosynthesismentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Self Cite

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“…Persea americana Mill., also known as avocado, belongs to the Lauraceae family, Ebenales order (Vergara-Pulgar et al 2019), is an evergreen, heterogeneous tree species which indigenous to Mesoamerica (Boza et al 2018). The fruit of avocado is a kind of climacteric fruit (Defilippi et al 2018) which rich in oil content and carbohydrates, especially high in phytosterol and contain zero cholesterol, these nutrients provide a series of potential health benefits (Ervina et al…”

mentioning

confidence: 99%

Complete plastid genome of Persea americana Mill. (Ebenales) and phylogenetic analysis

Liu

Gong

Lin

et al. 2019

Mitochondrial DNA Part B

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The chloroplast (cp) genome sequence of Persea americana Mill. has been characterized from Illumina pair-end sequencing. The complete cp genome was 152,732 bp in length, containing a large single copy region (LSC) of 84,632 bp and a small single copy region (SSC) of 18,346 bp, which were separated by a pair of 24,877 bp inverted repeat regions (IRs). The genome contained 126 genes, including 86 protein coding genes, 32 tRNA genes, and eight rRNA genes. Further, phylogenetic analysis of 10 representative sequences within the order Ebenales suggests that Persea americana Mill. is closely related to the species in family Sapotaceae.

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Effect of Fruit Maturity on Microstructural Changes and Oil Yield during Cold‐Pressed Oil Extraction of ‘Hass’ Avocado

Yang

Fullerton

Hallett

et al. 2020

J Americ Oil Chem Soc

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The aim of this study was to determine the effect of avocado fruit maturity (as estimated by time of harvest during the season) on cold‐pressed oil yield. ‘Hass’ avocado fruit at six different stages of on‐tree maturity (harvested between September and April 2016/2017) were processed in a commercial cold‐pressed oil extraction plant. After destoning and grinding, the fruit pulp was malaxed for 120 min. Avocado pulp samples were examined by light microscopy, electrical conductivity, and electrical impedance spectroscopy. More intact parenchyma cells were observed by microscopy in early‐season fruit. The greatest cell disruption occurred after the grinding step as shown by electrical resistance values. The late‐season fruit were found to have higher conductivity and lower electrical resistance values which indicated more cell disruption occurred during extraction. Cell walls extracted from fruit harvested later in the season showed a higher yield of the water‐soluble polysaccharides and a lower yield of the trans‐1,2‐diaminocyclohexane‐N,N,N′,N′‐tetraacetic acid (CDTA)‐soluble polysaccharides. The cold‐pressed oil extraction yield (g oil/100 g fresh flesh) was found to increase with fruit maturity from 10.4 in the early season to 22.5 (g oil/100 g fresh flesh) in the late season. The extraction efficiency (cold‐pressed extraction yield/total oil content) also increased from early season (77.2%) to late season (96.6%). In conclusion, the avocado flesh cellular structure ruptured more easily in late‐season fruit suggesting of a contribution to more oil release and improved extraction yields.

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Changes in cell wall pectins and their relation to postharvest mesocarp softening of “Hass” avocados ( Persea americana Mill.)

Cited by 78 publications

References 36 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

Complete plastid genome of Persea americana Mill. (Ebenales) and phylogenetic analysis

Effect of Fruit Maturity on Microstructural Changes and Oil Yield during Cold‐Pressed Oil Extraction of ‘Hass’ Avocado

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