Respiratory quotient: innovative method for monitoring ‘Royal Gala’ apple storage in a dynamic controlled atmosphere

Weber, Anderson; Brackmann, Auri; Both, Vanderlei; Pavanello, Elizandra Pivotto; Anese, Rogério de Oliveira; Thewes, Fábio Rodrigo

doi:10.1590/0103-9016-2013-0429

Cited by 68 publications

(19 citation statements)

References 21 publications

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“…The large errors found offer a plausible explanation for the highly pressure dependent RQ estimates discussed in our previous work (Bessemans et al, 2016). Also, they explain the high variation in RQ measurements reported in other recent research in the field, where the RQ of stored fruit was estimated based on measured changes in gas partial pressure of O2 and CO2 over a time period of 24 h and leakage of the cool room was not taken into account (Brackmann, 2015;Weber et al, 2015;Both et al, 2017).…”

Section: Leakage Correction Improves Estimate Of Rqmentioning

confidence: 50%

Model based leak correction of real-time RQ measurement for dynamic controlled atmosphere storage

Bessemans

Verboven

Verlinden³

et al. 2018

Postharvest Biology and Technology

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A method was developed to correct real-time measurements of the respiratory quotient (RQ) of pome fruit for gas leakage of a cool room. The method is based on a general leakage model that was simplified by performing sensitivity analysis of the contribution of the pressure driven and concentration driven gas transport terms. The analysis showed that pressure driven leakage was dominant over diffusive leakage. The methodology was validated successfully using an empty storage container at 0.4 kPa O2 and 1.3 kPa CO2. A sensitivity analysis using virtual storage experiments showed that the error of the RQ estimates with leak correction was 0 %, while without leak correction they increased to above 700 %. Finally, the validated model was successfully implemented in an automated RQ-DCA control system using 'Braeburn' apple fruit (Malus ×domestica 'Braeburn' 2x). RQ estimates without leakage correction were heavily biased when leakage of atmospheric air into the storage container occurred and would lead to erroneous control of the storage atmosphere composition. With the developed leakage correction, RQ measurements were found to be accurate during decreasing as well as increasing atmospheric air pressure.

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Section: Leakage Correction Improves Estimate Of Rqmentioning

confidence: 50%

Model based leak correction of real-time RQ measurement for dynamic controlled atmosphere storage

Bessemans

Verboven

Verlinden³

et al. 2018

Postharvest Biology and Technology

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“…Mealiness is one important physiological disorder for apples of the 'Gala' group, which is described by a farinaceous texture and loss of juiciness due to the middle lamella degradation and subsequent cell separation (Prasanna et al 2007;Payasi et al 2009), decreasing apple quality and possibly making it unsuited for commercialization (Weber et al 2015). In this research, fruit of the control, NAA and NAA plus Ethephon treatments showed the highest mealiness occurrence (Fig.…”

Section: Postharvest Quality Of 'Brookfield' Applementioning

confidence: 61%

Postharvest quality of ‘Brookfield’ apple field-treated with naphthalene acetic acid alone or combined with other growth regulators

et al. 2020

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The Gala cultivars represent about 65% of the Brazilian apple production, however, it has a short harvest period, making necessary to use technologies that anticipate or delay fruit maturation. A widely used technology is the preharvest application of growth regulators. The objective of this investigation was to evaluate the effect of preharvest application of naphthalene acetic acid (NAA) combined with aminoethoxyvinylglycine (AVG) and 2-chloroethylphosphonic acid (Ethephon), on the quality of 'Brookfield' apple at harvest and after eight months controlledatmosphere (CA) (1.2 kPa O 2 and 2.0 kPa CO 2) storage followed by seven days of shelf life at 20 °C. The treatments were: [1] Control: application of water only; [2] NAA (40 g.ha-1); [3] NAA (40 g•ha-1) plus Ethephon (2.0 L•ha-1 24% of active ingredient), and [4] NAA (40 g•ha-1) plus AVG (0.83 kg.ha-1 15% of active ingredient). At harvest, fruit treated with NAA presented a higher level of starch degradation, ethylene production and respiration rate. Fruit treated with NAA plus AVG maintained better quality after eight months under CA storage plus seven days of shelf life, due to higher healthy fruit amount and higher flesh firmness, but this combination reduced the red skin color index. Additionally, NAA plus Ethephon may be an alternative to maintain the quality of 'Brookfield' apple during storage in comparison to the application of NAA isolated.

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“…The very low oxygen content (ULO) commonly used for long-term storage of apples cannot be used for pears due to their greater susceptibility to damage due to oxygen deficiency [17]. Low oxygen levels trigger anaerobic respiration resulting in the accumulation of alcohol in pears, which is directly responsible for damage to the flesh [18]. This can be prevented by the monitoring of changes in the alcoholic respiration in the atmosphere [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Storage Conditions on Storability and Antioxidant Potential Of Pears CV. ‘Conference’

Łysiak¹,

Rutkowski²,

Walkowiak-Tomczak³

2021

Preprint

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Late pear cultivars, such as ‘Conference’, can be stored for a long period, with their storability depending on storage conditions. A three-year study (2011-2013) compared the impact of half-year storage using four technologies – normal atmosphere, normal atmosphere + 1-methylcyclopropene (1-MCP), controlled atmosphere, controlled atmosphere + 1-MCP – on the quality parameters of ‘Conference’ pears, such as mass loss, firmness, total soluble solids, acidity, antioxidant capacity, and the incidence of diseases and disorders. Additionally, the study analysed different storage conditions in terms of profitability, based on the market prices for pears in the seasons during which the pears were stored. The storage conditions had a very strong influence on the fruit quality parameters, and was found to affect most visibly the mass loss and the incidence of postharvest diseases and disorders. The storage of ‘Conference’ pears for 180 days in normal atmosphere is not economically viable, even if the fruit is subjected to 1-MCP treatment.

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Respiratory quotient: innovative method for monitoring ‘Royal Gala’ apple storage in a dynamic controlled atmosphere

Cited by 68 publications

References 21 publications

Model based leak correction of real-time RQ measurement for dynamic controlled atmosphere storage

Model based leak correction of real-time RQ measurement for dynamic controlled atmosphere storage

Postharvest quality of ‘Brookfield’ apple field-treated with naphthalene acetic acid alone or combined with other growth regulators

Effect of Storage Conditions on Storability and Antioxidant Potential Of Pears CV. ‘Conference’

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