Computer simulation of microwave cooking of sweet potato

Journal of Food Process Engineering - Tập 45 Số 9 - 2022
Yoshihiro Kako1, Yvan Llave1, Noboru Sakai1, Mika Fukuoka1
1Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan

Tóm tắt

AbstractAlthough sweet potatoes have the characteristic of becoming sweeter when heated, the MW treatment is challenging because its characteristic high heating rate can affect the intrinsic chemical changes of sweet potatoes during MW heating. To clarify this phenomena, experimental and simulated approaches for the microwave (MW) cooking of sweet potatoes were evaluated. The dielectric properties (DPs) of sweet potatoes during MW heating were measured from 20 to 90°C at 2450 MHz. A three‐dimensional (3D) geometric model based on the actual structure and size of the MW flatbed oven and sample was constructed. Two commercial software packages, which are based on the finite element method (FEM) were used for the calculation by coupling the analysis of electromagnetic fields and heat transfer. To improve the calculation during temperature simulation, a mathematical approach considering a contact layer for the boundary between the sample and the ceramic plate was evaluated.The dielectric constant decreased with increasing temperature; whereas, the dielectric loss factor values were similar at 20–60°C. However, at 60–90°C, the values decreased sharply. The temperature change inside the sweet potato was estimated using the 3D model and temperature profiles and cross‐section distributions were compared with the experimental results. The simulated results agree well to the measured results especially for the approach considering a contact layer for the surrounding air below the samples. These results are of potential value for the design of MW cooking systems for sweet potatoes.Practical ApplicationsThe applications of the findings of this study include but are not limited to: (a) use the measured DPs of sweet potatoes in both industrial applications and academia for developing novel applications of microwaveable sweet potato‐based products, (b) predict the temperature profiles and distributions of sweet potatoes using the developed 3D computer simulation model for MW heating in flatbed ovens, and (c) improve the simulation of MW heating of foods directly placed on the ceramic plate during MW treatment considering the contact layer approach evaluated in this study.

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Tài liệu tham khảo

10.1016/J.IFSET.2017.09.002

10.1016/j.ifset.2016.12.002

10.1016/j.jfoodeng.2007.05.020

10.1080/10942910701284291

10.1016/J.FOODRES.2013.02.033

10.1016/j.fbp.2016.04.009

10.1016/j.cep.2007.09.011

10.1016/j.ifset.2017.07.008

10.1016/j.jfoodeng.2008.04.024

10.1081/JFP-120021459

10.1016/J.JFOODENG.2015.01.011

10.1016/S0140-7007(03)00051-3

Hashemizadeh S. Kato Y. Horibe M. &Kuster N.(2019).Evaluation of dielectric measurements upon thin single layer solids using open coaxial probe technology. 2019 URSI Asia‐Pacific Radio Science Conference New Delhi India: IEEE. p.1.https://doi.org/10.23919/URSIAP-RASC.2019.8738398

10.1088/1742-6596/1920/1/012032

10.1016/j.applthermaleng.2016.09.137

KYOCERA International Inc. (2020).Characteristics of KYOCERA fine ceramics. Retrieved fromhttps://www.kyocera.co.jp/prdct/fc/product/pdf/material.pdf.

10.1016/j.jfoodeng.2012.09.019

10.1016/j.jfoodeng.2014.01.028

10.1016/j.jfoodeng.2014.04.017

10.1016/j.ifset.2020.102479

10.1016/j.jfoodeng.2016.01.003

10.1016/B978-0-12-811447-6.00013-8

10.1016/J.FBP.2010.12.002

10.1016/j.carbpol.2006.04.017

10.6090/jarq.52.7

10.1016/j.jfoodeng.2004.04.025

Singh R. P., 2009, Introduction to food engineering, 796

10.1111/J.1365-2621.2003.TB14145.X

10.1039/c9ra10639a

10.1016/j.lwt.2010.03.017

10.11648/J.AJETM.20200505.11

10.1016/J.JFOODENG.2016.08.003

10.1016/j.biosystemseng.2004.01.007

10.1016/j.jfoodeng.2011.05.015

10.1080/08327823.2020.1838048

10.1021/acs.jafc.8b06523

10.1016/J.JFOODENG.2011.10.005

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Journal of Food Process Engineering

Tập 45 Số 9

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