RESEARCH PAPER
Effect of drying temperature on electrical impedance characteristic of ginger slices
 
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Advanced Nano-Materials (ANoMa) Research Group, Advanced Materials Team, Ionic State Analysis (ISA) Laboratory, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Malaysia
2
Advanced Materials Team, Ionic & Kinetic Materials Research (IKMaR) Laboratory, Faculty of Science and Technology, Universiti Sains Islam Malaysia, Malaysia
CORRESPONDING AUTHOR
Nora Salina Md Salim   

Advanced Nano-Materials (ANoMa) Research Group, Advanced Materials Team, Ionic State Analysis (ISA) Laboratory, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terenganu, Malaysia
Publication date: 2020-04-30
Final revision date: 2020-04-05
Acceptance date: 2020-04-11
 
Int. Agrophys. 2020, 34(2): 281–287
KEYWORDS
TOPICS
ABSTRACT
Moisture removal during drying may induce structural changes in ginger, which may be correlated with its electrical impedance characteristics. In this study, ginger slices were dried using hot-air drying at temperatures of 50, 60 and 70°C. The drying kinetics and moisture diffusivity were determined. Also, the impedance changes during drying were evaluated using electrical impedance spectroscopy in the frequency range of 5 Hz to 1 MHz. The results showed that effective moisture diffusivity increased with increasing temperature, this lies in the range of 6.51×10-9 m2 s-1 to 2.15×10-8 m2 s-1. The impedance plot was found to be influenced by the drying temperature, moisture content and frequency. Impedance at 50°C decreased as the drying process proceeded, and started to increase during the final stage of drying. As for frequency, impedance decreased as the frequency increased. However, it was found that the impedance values at temperatures of 60 and 70°C were not recommended for further analysis due to scattered results. Therefore, this study suggested that the best temperature at which to study the impedance characteristics of ginger slices between the frequencies of 50 Hz and 1 MHz was found to be at the drying temperature of 50°C.
 
REFERENCES (33)
1.
Akoy E.O.M., 2014. Experimental characterization and modeling of thin-layer drying of mango slices. Int. Food Res. J., 21(5), 1911-1917.
 
2.
Ando Y., Mizutani K., and Wakatsuki N., 2014. Electrical impedance analysis of potato tissues during drying. J. Food Eng., 121(1), 24-31. https://doi.org/10.1016/j.jfoo....
 
3.
Ando Y., Okunishi T., and Okadome H., 2019. Influences of blanching and freezing pretreatments on moisture diffusivity and quality attributes of pumpkin slices during convective air-drying. Food Bioprocess Technol., 12(11), 1821-1831. https://doi.org/10.1007/s11947....
 
4.
AOAC, 2000. Official methods of analysis. 17th ed. Association of Analytical Communities, Gaithersburg, MD, USA.
 
5.
Bai X., Hou J., Wang L., Wang M., Wang X., and Wu C., 2018. Electrical impedance analysis of pork tissues during storage. Food Meas., 12(1), 164-172. https://doi.org/10.1007/s11694....
 
6.
Betoret E., Calabuig-jiménez L., Barrera C., and Rosa M.D., 2016. Sustainable drying technologies for the development of functional foods and preservation of bioactive compounds. In: Sustainable Drying Technologies (Ed. J. del R. Olvera). IntechOpen. https://doi.org/10.5772/64191.
 
7.
Chowdhury A., Kanti Bera T., Ghoshal D., and Chakraborty B., 2017. Electrical impedance variations in banana ripening: An analytical study with electrical impedance spectroscopy. J. Food Process Eng., 40(2). https://doi.org/10.1111/jfpe.1....
 
8.
Deshmukh A.W., Varma M.N., Yoo C.K., and Wasewar K.L., 2014. Investigation of solar drying of ginger (Zingiber officinale): Emprical modelling, drying characteristics and quality study. Chinese J. Eng., 2014, 1-7. https://doi.org/10.1155/2014/3....
 
9.
Grossi M. and Riccò B., 2017. Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: A review. J. Sensors Sens. Syst., 6(2), 303-325. https://doi.org/10.5194/jsss-6....
 
10.
Gümüşay Ö.A., Borazan A.A., Ercal N., and Demirkol O., 2015. Drying effects on the antioxidant properties of tomatoes and ginger. Food Chem., 173, 156-162. https://doi.org/10.1016/j.food....
 
11.
Hafiza M.N. and Isa M.I.N., 2017. Analyses of ionic conductivity and dielectric behavior of solid polymer electrolyte based 2-hydroxyethyl cellulose doped ammonium nitrate plasticized with ethylene carbonate. AIP Conf. Proc., 1885. https://doi.org/10.1063/1.5002....
 
12.
Hlaváčová Z., Kertész Á., Staroňová L., Regrut T., Valach M., Híreš Ľ., Petrović A., and Wollner A., 2015. Connection between biological material drying characteristics and electrical properties. Orig. Sci. Pap., 19(1), 1-6.
 
13.
Ho S.C., Chang K.S., and Lin C.C., 2013. Anti-neuroinflammatory capacity of fresh ginger is attributed mainly to 10-gingerol. Food Chem., 141(3), 3183-3191. https://doi.org/10.1016/j.food....
 
14.
Islam M., Wahid K.A., Dinh A.V., and Bhowmik P., 2019. Model of dehydration and assessment of moisture content on onion using EIS. J. Food Sci. Technol., 56(6), 2814-2824. https://doi.org/10.1007/s13197....
 
15.
Jelled A., Fernandes A., Barros L., Chahdoura H., Achour L., Ferreira I.C.F.R., and Cheikh H. Ben, 2015. Chemical and antioxidant parameters of dried forms of ginger rhizomes. Ind. Crops Prod., 77, 30-35. https://doi.org/10.1016/j.indc....
 
16.
Kertész Á., Hlaváčová Z., Vozáry E., and Staroňová L., 2015. Relationship between moisture content and Electrical impedance of carrot slices during drying. Int. Agrophys., 29(1), 61-66. https://doi.org/10.1515/intag-....
 
17.
Kuang W. and Nelson S.O., 1998. Low-frequency dielectric properties of biological tissues: A review with some new insights. Trans. Am. Soc. Agric. Eng., 41(1), 173-184. https://doi.org/10.13031/2013.....
 
18.
Layssi H., Ghods P., Alizadeh A.R., and Salehi M., 2015. Electrical resistivity of concrete. Concr. Int., 37(5), 41-46.
 
19.
Liu X., 2006. Electrical impedance spectroscopy applied in plant physiology studies. Engineering and Technology. RMIT University.
 
20.
Md Salim N.S., Gariépy Y., and Raghavan V., 2017. Hot air drying and microwave-assisted hot air drying of broccoli stalk slices (Brassica oleracea L. Var. Italica). J. Food Process. Preserv., 41(3). https://doi.org/10.1111/jfpp.1....
 
21.
Md Salim N.S., Gariѐpy Y., and Raghavan V., 2019. Effects of processing on quality attributes of osmo-dried broccoli stalk slices. Food Bioprocess Technol., 12(7), 1174-1184. https://doi.org/10.1007/s11947....
 
22.
Mejenom A.A., Hafiza M.N., and Isa M.I.N., 2018. X-Ray diffraction and infrared spectroscopic analysis of solid biopolymer electrolytes based on dual blend carboxymethyl cellulose-chitosan doped with ammonium bromide. ASM Sci. J., 11(1), 37-46.
 
23.
Mewa E.A., Okoth M.W., Kunyanga C.N., and Rugiri M.N., 2018. Current research in nutrition and food science drying modelling, moisture diffusivity and sensory quality of thin layer dried beef. Curr. Res. Nutr. Food Sci., 06(2), 552 -565. https://doi.org/10.12944/crnfs....
 
24.
Onu Chijioke E., Igbokwe Philomena K., and Nwabanne Joseph T., 2017. Effective moisture diffusivity, activation energy and specific energy consumption in the thin-layer drying of potato. Int. J. Nov. Res. Eng. Sci., 3(2), 10-22.
 
25.
Seremet L., Botez E., Nistor O.-V., Gogus F., Andronoiu D.G., and Mocanu G.-D., 2015. Influence of drying conditions on the effective diffusivity and activation energy during convective air and vacuum drying of influence of drying conditions on the effective air and vacuum drying of pumpkin. Food Technol., 39(2), 20-29. https://doi.org/10.1016/j.food....
 
26.
Sousa Gallagher M.J. and Mahajan P.V., 2011. The stability and shelf life of fruit and vegetables. In: Woodhead Publishing Series in Food Science, Technology and Nutrition. Woodhead Publishing, 641-656. https://doi.org/10.1533/978085....
 
27.
Srinivasan K., 2017. Ginger rhizomes (Zingiber officinale): A spice with multiple health beneficial potentials. PharmaNutrition, 5(1), 18-28. https://doi.org/10.1016/j.phan....
 
28.
Taheri-garavand A., Rafiee S., and Keyhani A., 2011. Effective moisture diffusivity and activationenergy of tomato in thin layer dryer during hot air drying. Int. Trans. J. Eng. Manag. Appl. Sci. Technol., 2(2), 239-248.
 
29.
Thoresen A., Hornbostel K., and Geiker M.R., 2016. Frequency dependency of concrete resistance measurements. Proc. Concrete Solutions, 6th Int. Conf. Concrete Repair, June 20-23, Thessaloniki, Greece. https://doi.org/10.1201/978131....
 
30.
Touil A., Chemkhi S., and Zagrouba F., 2014. Moisture diffusivity and shrinkage of fruit and cladode of opuntia ficus-indica during infrared drying. J. Food Process., 2014. https://doi.org/10.1155/2014/1....
 
31.
Vozáry E. and D-né E.H., 1998. Changes in impedance parameters of apple slices during drying. IFAC Proc. Vol., 31(9), 123-125. https://doi.org/10.1016/s1474-....
 
32.
Zhao X., Zhuang H., Yoon S.C., Dong Y., Wang W., and Zhao W., 2017. Electrical impedance spectroscopy for quality assessment of meat and fish: A review on basic principles measurement methods, and recent advances. J. Food Qual., 2017. https://doi.org/10.1155/2017/6....
 
33.
Zulkifli F., Ali N., Yusof M.S.M., Isa M.I.N., Yabuki A., and Wan Nik W.B., 2017. Henna leaves extract as a corrosion inhibitor in acrylic resin coating. Prog. Org. Coatings, 105, 310-319. https://doi.org/10.1016/j.porg....
 
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