Mathematical simulation on the surface temperature variation of fresh-cut leafy vegetable during vacuum cooling

A numerical simulation by using a commercial software named COMSOL MULTIPHYSICS@ V4.4 was carried out to predict the heat transfer process in fresh-cut leaves of Brassica chinensis during vacuum cooling. The temperature distribution and the average surface temperatures of the leafy part and the petiole were predicted and compared with the experimental data. Both the experimental and simulated results followed the same time–temperature curves. The evaluated results show that the R2 values were 0.9837 and 0.9876 for the average surface temperatures of the leafy part and the petiole, respectively. Further, the maximum differences between the experimental and simulated average surface temperatures at any time did not exceed 0.91°C and 0.83°C for the leafy part and the petiole, respectively. This indicates that the simulation outcomes are in great agreement with the experimental results.

[1]  F. Rodrigues,et al.  Effect of time, temperature, and slicing on respiration rate of mushrooms. , 2009, Journal of food science.

[2]  Ali Abas Wani,et al.  Recent advances in extending the shelf life of fresh Agaricus mushrooms: a review. , 2010, Journal of the science of food and agriculture.

[3]  Da-Wen Sun,et al.  CFD simulation of coupled heat and mass transfer through porous foods during vacuum cooling process , 2003 .

[4]  Adélio Rodrigues Gaspar,et al.  A mathematical model describing the two stages of low-pressure-vaporization of free water , 2012 .

[5]  Zhihang Zhang,et al.  Evaluation of innovative immersion vacuum cooling with different pressure reduction rates and agitation for cooked sausages stuffed in natural or artificial casing , 2014 .

[6]  R. Romero-González,et al.  Monitoring of phytochemicals in fresh and fresh-cut vegetables: a comparison. , 2014, Food chemistry.

[7]  E. Chiavaro,et al.  Mathematical Modelling of Heat Transfer in Mortadella Bologna PGI during Evaporative Pre-Cooling , 2014 .

[8]  Da‐Wen Sun,et al.  CHARACTERISTICS OF CHAMBER TEMPERATURE CHANGE DURING VACUUM COOLING , 2009 .

[9]  Da-Wen Sun,et al.  Vacuum cooling technology for the food processing industry: a review , 2000 .

[10]  D. L. Pyle,et al.  Modelling Oil Absorption During Post-Frying Cooling: I: Model Development , 2005 .

[11]  C. James,et al.  A Critical Review of Dehydrofreezing of Fruits and Vegetables , 2014, Food and Bioprocess Technology.

[12]  João Carlos Bouzas Marins,et al.  Classification of factors influencing the use of infrared thermography in humans: A review , 2015 .

[13]  Da-Wen Sun,et al.  Vacuum cooling for the food industry—a review of recent research advances , 2004 .

[14]  Da-Wen Sun,et al.  NUMERICAL ANALYSIS OF THE THREE–DIMENSIONAL MASS AND HEAT TRANSFER WITH INNER MOISTURE EVAPORATION IN POROUS COOKED MEAT JOINTS DURING VACUUM COOLING , 2003 .

[15]  Short-term and long-term effects of low total pressure on gas exchange rates of spinach. , 2003, Advances in space research : the official journal of the Committee on Space Research.

[16]  H. Ozturk,et al.  Effect of pressure on the vacuum cooling of iceberg lettuce , 2009 .

[17]  X. Hu,et al.  Theoretical Simulation and Experimental Study on Effect of Vacuum Pre-Cooling for Postharvest Leaf Lettuce , 2014 .

[18]  Da‐Wen Sun,et al.  Effects of processing parameters on immersion vacuum cooling time and physico-chemical properties of pork hams. , 2013, Meat science.

[19]  Da‐Wen Sun,et al.  Immersion vacuum cooling of cooked beef - Safety and process considerations regarding beef joint size. , 2008, Meat science.

[20]  M. Gil,et al.  Comparison of industrial precooling systems for minimally processed baby spinach , 2015 .

[21]  J. Lanoisellé,et al.  Modeling heat and mass transfer during vacuum freezing of puree droplet , 2013 .

[22]  Juming Tang,et al.  Analysis of radio frequency (RF) power distribution in dry food materials , 2011 .

[23]  S. Gautam,et al.  Browning of fresh-cut eggplant: Impact of cutting and storage , 2012 .

[24]  Curtis L. Weller,et al.  Modeling cooling of ready-to-eat meats by 3D finite element analysis: Validation in meat processing facilities , 2013 .

[25]  Liana Drummond,et al.  Evaluation of the immersion vacuum cooling of cooked beef joints—mathematical simulation of variations in beef size and porosity and pressure reduction rates , 2012 .

[26]  Baolin Liu,et al.  Mechanism of spillage and excessive boiling of water during vacuum cooling , 2015 .

[27]  Zhihang Zhang,et al.  Vacuum Cooling of Meat Products: Current State-of-the-Art Research Advances , 2012, Critical reviews in food science and nutrition.

[28]  U. Annapure,et al.  Combined effect of chemical treatment and/or modified atmosphere packaging (MAP) on quality of fresh-cut papaya , 2013 .

[29]  S. He,et al.  Effects of vacuum cooling on the enzymatic antioxidant system of cherry and inhibition of surface-borne pathogens , 2013 .

[30]  Baolin Liu,et al.  The Optimization of Volumetric Displacement Can Uniformize the Temperature Distribution of Heated Ham during a Vacuum Cooling Process , 2014 .