Gas exchange model using heterogeneous diffusivity to study internal browning in ‘Conference’ pear

Nugraha, Bayu; Verboven, Pieter; Verlinden, Bert; Verreydt, Celine; Boone, Matthieu; Josipović, Ivan; Nicolaı̈, Bart

doi:10.1016/j.postharvbio.2022.111985

Cited by 10 publications

(6 citation statements)

References 58 publications

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“…The difference in the range of RQ values also indicate that each product has a different safe limit range. High RQ values (exceeding the safe limit) in the storage room headspace are previously utilized as indicators of fermentation occurrence when the rate of CO2 production exceeds the rate of O2 consumption as a result of the fermentation process (Bessemans et al, 2016;Nugraha et al, 2022). Regarding the relationship between RQ and O2 concentration, overall, RQ did not significantly increase at low oxygen conditions (hypoxia, < 21%) at low temperatures, both in snake fruit and shallots (Figure 6A).…”

Section: Resultsmentioning

confidence: 93%

“…Although the RQ values in the headspace were still within safe limits (not indicating fermentation), this did not necessarily reflect the conditions inside the products. Previously, Nugraha et al, (2022) found high RQ values, exceeding the safe limits, inside pears due to the resistance of gas exchange by the skin and the complexity of the product's microstructure.…”

Section: Resultsmentioning

confidence: 95%

“…Slower changes of O2 and CO2 during low-temperature respiration measurements were also previously found by Rahayu et al, (2021). In addition to temperature, structural diversity contributes significantly to the rate of O2 intake and CO2 production, even in the same product variety, as explained by Ho et al (2018) and Nugraha et al, (2022). The different rates of O2 consumption and CO2 production in snake fruit may be due to the peel structure of the snake fruit, which has different outer and inner surface contours.…”

Section: Resultsmentioning

confidence: 99%

“…It is influenced by the macro and micro anatomy of the products as gas transfer routes (Mebatsion et al, 2008;Herremans et al, 2014). Differences in macro and micro structures in the products are indicated to play a role in determining the respiration of fresh products, and the vulnerability of products to damage as explained by Ho et al (2018) and Nugraha et al, (2022) for pears. This also confirms that the storage procedures for each product are not the same and require more specific treatments for each product.…”

Section: Resultsmentioning

confidence: 99%

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A Comparative Study of Respiratory Activity of Tropical Products under Two Storage Conditions

Nugraha,

Rahmah,

Ayuningsih

et al. 2024

JTEP-L

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This study aimed to investigate respiration process of Indonesian tropical products and its parameter to support the use of CAS. Shallot, dragon fruit and sneak fruit that are high-value and export-potential products in Indonesia were investigated. For respiration measurement, the fruits were kept in tightly closed jars. The ratio of fruit volume and free volume of jar (headspace) was determined to calculate the rate of fruit respiration. To observe the storage condition effects, the jars were stored in two different temperatures: low temperature (7±2°C) and room temperature (27±2°C). In cold temperature storage, changes in O2 and CO2 concentrations are slower than in room temperature storage. The rate of O2 consumption and CO2 production of products during storage decreased as the O2 concentration decreased for all conditions. Based on the dramatic increase of RQ value at low O2 concentrations, the low oxygen limits (LOLs) of shallot, sneak fruit and dragon fruit were estimated at around 7.5%, 4% and 2% O2 respectively, at the room temperature. However, the LOL was not detected yet at a cold temperature for 200 h of measurement due to a slow decrease of O2. The results showed that different products had different respiration activities so that the storage procedures should be different. A determination of model-based LOL and validation would be needed in the next research to be precisely applied on CAS. Keywords: Carbon dioxide, Dragon fruit, Shallot, Oxygen, Postharvest, Snake fruit.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

A Comparative Study of Respiratory Activity of Tropical Products under Two Storage Conditions

Nugraha,

Rahmah,

Ayuningsih

et al. 2024

JTEP-L

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“…The existence of gas gradients in pome fruit and other plant organs has been shown by us and other groups experimentally (Banks, 1983;Bologa et al, 2003;Lammertyn et al, 2003a;Berry and Society, 2008;Borisjuk and Rolletschek, 2009;Ho et al, 2010b;Pedersen et al, 2020) and in silico (Ho et al, 2011(Ho et al, , 2016Verboven et al, 2013;Nugraha et al, 2022;Verreydt et al, 2022;Langer et al, 2023). If the supply of O 2 by diffusion is too small, the oxidative phosphorylation stalls because of lack of substrate, and the TCA cycle is reconfigured and the metabolic flux through the latter is decreased dramatically (Bailey-Serres and Voesenek, 2008).…”

Section: Gas Transport Processes Cause Spatio-temporal Changes In Fru...mentioning

confidence: 90%

Spatio-temporal dynamics of the metabolome of climacteric fruit during ripening and post-harvest storage

Nicolaı̈

Xiao

Han

et al. 2023

Journal of Experimental Botany

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Fruit quality traits are determined to a large extent by their metabolome. The metabolite content of climacteric fruit changes drastically during ripening and postharvest storage and has been investigated extensively. However, the spatial distribution of metabolites and how it changes in time has received much less attention as fruit are usually considered as homogenous plant organs. Yet, spatio-temporal changes of starch, which is hydrolysed during ripening, has been used for ages as a ripening index. As vascular transport of water, and, hence, convective transport of metabolites slows down in mature fruit and even stalls after detachment, spatio-temporal changes in their concentration are likely affected by diffusive transport of gaseous molecules that act as substrate (O2), inhibitor (CO2) or regulator (ethylene, NO) of the metabolic pathways that are active during climacteric ripening. In this review we discuss such spatio-temporal changes of the metabolome and how they are affected by transport of metabolic gases and gaseous hormones. As there are currently no measurement techniques available to measure the metabolite distribution repeatedly by nondestructive means, we introduce reaction-diffusion models as an in silico tool to compute it. We show how the different components of such a model can be integrated and used to better understand the role of spatio-temporal changes of the metabolome in ripening and postharvest storage of climacteric fruit that is detached from the plant and discuss future research needs.

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Assessing the development of internal disorders in pome fruit with X-ray CT before, during and after controlled atmosphere storage and shelf life

Wood,

Schut,

Balk

et al. 2025

Food Control

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Gas exchange model using heterogeneous diffusivity to study internal browning in ‘Conference’ pear

Cited by 10 publications

References 58 publications

A Comparative Study of Respiratory Activity of Tropical Products under Two Storage Conditions

A Comparative Study of Respiratory Activity of Tropical Products under Two Storage Conditions

Spatio-temporal dynamics of the metabolome of climacteric fruit during ripening and post-harvest storage

Assessing the development of internal disorders in pome fruit with X-ray CT before, during and after controlled atmosphere storage and shelf life

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