Modelling respiration rate of fresh fruits and vegetables for modified atmosphere packages: a review

Fonseca, Susana; Oliveira, Felipe Proenço de; Brecht, Jeffrey K.

doi:10.1016/s0260-8774(01)00106-6

Cited by 594 publications

(491 citation statements)

References 55 publications

(193 reference statements)

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“…The dependence of respiration rate on the headspace O 2 and CO 2 concentrations has been described assuming the enzyme kinetics model for combined type of inhibition proposed by Peppelenbos and Van't Leven (1996). The effect of surrounding temperature on the respiratory parameters has been evaluated using the Arrhenius relationship (Fonseca et al 2002;Benkeblia 2004;Charles et al 2005;Kaur et al 2011). The changes in the respiratory parameters on account of minimal processing have also been discussed.…”

Section: Resultsmentioning

confidence: 99%

“…Use of low O 2 (1-5 %) and high CO 2 (5-10 %) concentrations, in combination with storage at low temperatures maintains sensorial as well as microbial Partial pressure of oxygen , kPa Respiration rate, ml/kg-h c) Temperature: 20 o C Fig. 3 Graphical representation of variability in inhibition of oxygen consumption rate of whole and end cut baby corn by carbon dioxide with increase in temperature quality of fresh-cut vegetables (Fonseca et al 2002;Moretti et al 2003). These conditions inhibit enzymatic browning reaction on the cut surfaces and the structure of plant tissue sustains its typical turgoricidy and crispness for a longer period.…”

Section: Resultsmentioning

confidence: 99%

“…Use of low O 2 (1-5 %) and high CO 2 (5-10 %) concentrations, in combination with low temperature storage maintains sensorial quality and extends the shelf life of fresh-cut vegetables (Fonseca et al 2002;Moretti et al 2003). Discolouration of cut surfaces due to enzymatic browning, yellowing of green vegetables, and pale colour of bright vegetables are the main defects of fresh-cut produce (Nobile et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…A two to three fold increase in biological reactions has been reported for every 10°C rise in temperature within the range of temperatures normally encountered in the distribution and marketing chain. Arrhenius law has been widely used to describe temperature dependence of respiration rates (Fonseca et al 2002;Kaur et al 2011;Benkeblia 2004;Charles et al 2005). All the parameters of enzyme kinetics model were evaluated using Arrhenius law [ k ¼ Ae ÀEa RT ] to study the effect of storage temperature.…”

Section: Introductionmentioning

confidence: 99%

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Respiratory dynamics of fresh baby corn (Zea mays L.) under modified atmospheres based on enzyme kinetics

2012

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The respiratory behaviour of baby corn -whole and end-cut, under different temperatures and gas conditions was evaluated to study its respiratory dynamics based upon enzyme kinetics. The dependence of respiration rate on the O 2 and CO 2 concentrations has been described assuming the enzyme kinetics model for combined type of inhibition caused by CO 2 . Various respiratory parameters viz. maximal O 2 consumption rate Michaelis-Menten constants, Inhibition constants under the specified environmental conditions of 5, 12.5, 20°C and 75% relative humidity (RH) were estimated using non-linear regression technique. The enzyme kinetics parameters were analyzed according to Arrhenius law to study their temperature dependence. Based upon the overall analysis, it was found that storage temperature had substantial affect on the partial pressures within the closed containers and subsequently the respiration rates. The concentration of O 2 inside the container and surrounding temperature had synergistic effect on the rate of respiration and respiratory parameters. Though the inhibition by evolved CO 2 was observed to be of combined type, it changed from predominantly competitive at 5°C to predominantly uncompetitive at 12.5 and 20°C. This study can be utilized for design of modified atmosphere packages for storage of fresh and minimally processed baby corn.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Respiratory dynamics of fresh baby corn (Zea mays L.) under modified atmospheres based on enzyme kinetics

2012

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“…According Fonseca SC et al, 18 this is natural in vegetables in senescent phase, but that still allowing food's water transfer to the environment, affecting directly in the vegetables sensory characteristics. According Galvão et al, 17 the wilting process, that gives high roughness to the samples, is associated with water loss in vegetables, leading in weight loss and quality.…”

Section: Resultsmentioning

confidence: 99%

Advanced Methodology for Analysis of Changes in the Storage Lettuce Surface

Schmitz¹

2017

MOJFPT

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Several methods are used to evaluate behavior of vegetables, but there are still doubts about what is the best for each case. The scanning electron microscopy (SEM) has been used in studies to obtain knowledge about morphological characteristics of foods, especially foods with short shelf life and is constantly present in the diet of Brazilians. Based on this information, the scanning electron microscope was used to check the changes in different regions on the surface of curly lettuce leaves, during 14days refrigerated storage (4°C), in Styrofoam trays with polyvinyl chloride (PVC) film in relation to metabolic activities. In the studied regions were found stomata and monitoring the humidity loss process of samples (wilting), due to the breathing rate and transpiration through the images obtained by (SEM). In the first days of refrigerated storage the stomata were open, demonstrating that the lettuce was in the process of perspiration. Thus, it is concluded that the SEM methodology is able to demonstrate the lettuce behavior during the cooling period, showing the senescence process as wilting.Keywords: scanning electron microscopy, lettuce, breath rate, transpiration MOJ Food Processing & Technology Research Article Open AccessAdvanced methodology for analysis of changes in the storage lettuce surface

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Applications of Supercontinuum Sources for Trace Gas Sensing

Jahromi,

Khodabakhsh,

Cristescu

et al. 2024

Encyclopedia of Analytical Chemistry

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Optical absorption spectroscopy is a widely used method for gas detection, with many different applications in physics, chemistry, biology, environmental science, etc. Recent developments in mid‐infrared supercontinuum sources have opened up new possibilities for trace gas detection in these research fields. Supercontinuum sources have a wide spectral range (spectral coverage of a lamp), a high light intensity, and a high spatial coherence (directionality of a laser). The wide coverage enables to detect gases in complex gas mixtures, while the directionality allows a long path length through the gas sample, thereby improving the sensitivity for specific gases. After a short historical overview and background on the generation of supercontinuum light, attention is focused on the combination of supercontinuum sources, gas cells, and spectroscopic detection systems, to achieve an optimal detection limit and selectivity for gasses. The main methods for improving the signal‐to‐noise ratio ( SNR ) and detection sensitivity of gases are discussed. Applications are described with examples of the detection of gaseous pollutants in the atmosphere, postharvest physiology, and plasmas analysis.

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Modelling respiration rate of fresh fruits and vegetables for modified atmosphere packages: a review

Abstract: Journal of Food Engineering 52 (2002) 99-119. doi:10.1016/S0260-8774(01)00106-6Received by publisher: 2000-12-14Harvest Date: 2016-01-04 12:21:51DOI: 10.1016/S0260-8774(01)00106-6Page Range: 99-11

Cited by 594 publications

References 55 publications

Respiratory dynamics of fresh baby corn (Zea mays L.) under modified atmospheres based on enzyme kinetics

Respiratory dynamics of fresh baby corn (Zea mays L.) under modified atmospheres based on enzyme kinetics

Advanced Methodology for Analysis of Changes in the Storage Lettuce Surface

Applications of Supercontinuum Sources for Trace Gas Sensing

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