Optimisation of pumpkin mass transfer kinetic during osmotic dehydration using artificial neural network and response surface methodology modelling

Main Article Content

M. Mokhtarian
M. Heydari Majd
F. Koushki
H. Bakhshabadi
A. Daraei Garmakhany
S. Rashidzadeh

Keywords

artificial neural network, osmotic dehydration, pumpkin, RSM

Abstract

In this study, the response surface methodology (RSM) was used to optimise osmo-dehydration of pumpkin cubes. Effect of different parameters including osmotic solution temperature in the range of 5 to 50 °C, the immersion time from 0 to 180 min and the concentration of osmotic solution (from 5% salt + 50% sucrose w/v to 15% salt + 50% sucrose w/v) on water loss (WL), solid gain (SG), weight reduction and final moisture content were investigated by central composite design. The optimum condition for osmotic dehydration was found to be at a temperature of 5 °C, an immersion time of 180 min and an osmotic solution concentration of 15% salt + 50% sucrose w/v. At this optimum condition WL, SG, weight reduction and moisture content were found to be 70.7 g/100 g initial sample, 10.2 g/100 g initial sample, 59.06 g/100 g initial sample and 0.64 g water/g dry matter, respectively. The comparison of the obtained results by artificial neural network and RSM modelling showed that the artificial neural approach has a higher ability in comparison with RSM modelling in predicting final moisture content (R2=0.998 and 0.992, respectively).

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References

Aghajani, N., Kashaninejad, M., Dehghani, A.A. and Daraei Garmakhany, A., 2012. Comparison between artificial neural networks and mathematical models for moisture ratio estimation in two varieties of green malt. Quality Assurance and Safety of Crops and Foods 4: 93-101.
Agarry, S.E., Yusuf, R.O. and Owabor, C.N., 2008. Mass transfer in osmotic dehydration of potato: a mathematical model approach. Journal of Engineering and Applied Sciences 3: 190-198.
Association of Official Analytical Chemists (AOAC), 1990. AOAC official method 931.04. Moisture in cacao products. AOAC, Washington, DC, USA.
Azuara, E., Cortes, R., Garcia, H.S. and Beristain, C.I., 1992. Kinetic model for osmotic dehydration and its relationship with Fick’s second law. International Journal of Food Science and Technology 27: 409-418.
Chang, M.J., Han, M.R. and Kim, M.H., 2003. Effects of salt addition in sugar based osmotic dehydration on mass transfer and browning reaction of green pumpkin. Journal of Agricultural Chemistry and Biotechnology 46: 92-96.
Chenlo, F., Moreira, R., Fernandez-Herrero, C. and Vazquez, G., 2006. Mass transfer during osmotic dehydration of chestnut using sodium chloride solutions. Journal of Food Engineering 73: 164-173.
De Souza Silva, K., Cássia Caetano, L., Castilho Garcia, C., Telis Romero, J., Barbosa Santos, A., Aparecida Mauro, M. and Ismail, O., 2011. Osmotic dehydration process for low temperature blanched pumpkin. Journal of Food Engineering 105: 56-64.
Eren, I. and Kaymak-Ertekin, F., 2007. Optimization of osmotic dehydration of potato using response surface methodology. Journal of Food Engineering 79: 344-352.
Fernandes, F.A.N., Gallão, M.I. and Rodrigues, S., 2008. Effect of osmotic dehydration and ultrasound pre-treatment on cell structure: melon dehydration. LWT-Food Science and Technology 41: 604-610.
Garcia-Noguera, J., Oliveira, F.I.P., Gallão, M.I., Weller, C.L., Rodrigues, S. and Fernandes, F.A.N., 2010. Ultrasound-assisted osmotic dehydration of strawberries: effect of pretreatment time and ultrasonic frequency. Journal of Drying Technology 28: 294-303.
Hawkes, J. and Flink, J.M., 1978. Osmotic dehydration of fruit slices prior to freeze dehydration. Journal of Food Processing and Preservation 2: 265-284.
Ispir, A. and Togrul, I.T., 2009. Osmotic dehydration of apricot: kinetics and the effect of process parameters. Journal of Chemical Engineering Research and Design 87: 166-180.
Kashiri, M., Daraei Garmakhany, A. and Deghani, A.A., 2012. Modeling of sorghum soaking using artificial neural networks (MLP). Quality Assurance and Safety of Crops and Foods 4: 179-184.
Kaymak-Ertekin, F. and Sultanoglu, M., 2000. Modelling of mass transfer during osmotic dehydration of apples. Journal of Food Engineering 46: 243-250.
Kowalska, H. and Lenart, A., 2001. Mass exchange during osmotic pretreatment of vegetables. Journal of Food Engineering 49: 137-140.
Kowalska, H., Lenart, A. and Leszczyk, D., 2008. The effect of blanching and freezing on osmotic dehydration of pumpkin. Journal of Food Engineering 86: 30-38.
Khuri, A.I. and Cornell, J.A., 1987. Response surfaces design and analysis. Marcel Dekker, Inc., New York, NY, USA.
Lenart, A. and Flink, J.M., 1984. Osmotic concentration of potato: I. criteria for the end point of the osmosis process. International Journal of Food Science and Technology 19: 45-63.
Lenart, A., Lewicki, P. and Karandys, S., 1993. Kinetics of osmotic dehydration of pumpkin. In: Proceedings of the 5th seminar Properties of water in foods, Warschau, Poland, pp. 127-143.
Lertworasirikul, S. and Saetan, S., 2010. Artificial neural network modeling of mass transfer during osmotic dehydration of kaffir lime peel. Journal of Food Engineering 98: 214-223.
Mohebbi, M., Shahidi, F., Fathi, M., Ehtiati, A. and Noshad, M., 2010. Prediction of moisture content in pre-osmosed and ultrasounded dried banana using genetic algorithm and neural network. Journal of Food and Bioproduct Processing 89: 362-366.
Mousavi, M. and Javan, S., 2009. Modeling and simulation of apple drying, using artificial neural network and neuro-taguchi’s method. Journal of Agricultural Science and Technology 11: 559-571.
Shafafi Zenoozian, M. and Devahastin, S., 2009. Application of wavelet transform coupled with artificial neural network for predicting physicochemical properties of osmotically dehydrated pumpkin. Journal of Food Engineering 90: 219-227.
Singh, N.J. and Pandey, R.K., 2011. Neural network approaches for prediction of drying kinetics during drying of sweet potato. Agricultural Engineering International: CIGR Journal 13: 1-7.
Singh, B., Panesar, P.S., Nanda, V. and Kennedy, J.F., 2010. Optimisation of osmotic dehydration process of carrot cubes in mixtures of sucrose and sodium chloride solutions. Journal of Food Chemistry 123: 590-600.
Togrul, I. and Ispir, A., 2007. Effect on effective diffusion coefficients and investigation of shrinkage during osmotic dehydration of apricot. Journal of Energy Conversion and Management 48: 2611-2621.