DRYING CHARACTERISTICS OF ERI SILKWORM SNACKS AS AFFECTED BY COMBINED MICROWAVE AND HOT AIR DRYING
Keywords:
Silkworm pupae, drying kinetics, quality aspect, microwave heatingAbstract
Combined microwave and hot air drying was proposed as an alternative production method for eri silkworm snacks. Drying behaviors were investigated with variation of initial moisture content (30% and 75% wet basis), air temperature (60C and 80C) and microwave power (0-300 W). A suitable drying model was chosen based on the highest coefficient of determination, root mean square and chi square values. Color and hardness of dried eri silkworm were determined and compared with commercial varieties. Results showed that the Page model suitably described the drying characteristic of eri silkworm, and the power and Arrhenius functions correlated well with model parameters. Drying conditions affected product qualities such as color and texture. Optimal conditions for best drying characteristics and highest product quality were initial moisture content of 54%wb and microwave power of 300 W at temperatures of 78C.
References
AOAC. (1995). Official Methods of Analysis. 16th Edition, Association of Official Analytical Chemists, Washington DC.
Babalis, S.J. and Belessiotis, V.G. (2004). Influence of the drying conditions on the drying constants and moisture diffusivity during the thin layer drying of figs. J. Food Eng., 65:449-458.
Bingol, G., Pan, Z., Roberts, J.S., Devres, Y.O., and Balaban, M.O. (2008). Mathematical modelling of microwave-assisted convective heating and drying of grapes. Int. J. Agric. Biol. Eng., 1(2):46-54.
Çelen, S. (2019). Effect of microwave drying on the drying characteristics, color, microstructure, and thermal properties of Trabzon Persimmon. Foods, 84(8):1-19.
Crank, J. (1975). Mathematics of Diffusion. 2nd ed. Oxford University Press, London, UK, 414p.
Chandrasekaran, S., Ramanathan, S., and Basak, T. (2013). Microwave food processing - A review. Food Res. Int., 52:243-261.
De Foliart, G.R. (1997). An overview of the role of edible insects in preserving biodiversity. Ecol. Food Nutr., 36(2-4):109-132.
Doymaz, İ. (2011). Thin-layer drying characteristics of sweet potato slices and mathematical modelling. Heat Mass Transfer, 47:277-285.
Doymaz, İ. (2012). Evaluation of some thin-layer drying models of persimmon slices (Diospyros kaki L.). Energy Convers. Manag., 56:199-205.
Falade, K.O. and Solademi, O.J. (2010). Modelling of Air drying of fresh and blanched sweet potato slices. Int. J. Food Sci. Technol., 45(2):278-288.
Jiao, A., Xu, X., and Jin, Z. (2014). Modeling of dehydration-rehydration of instant rice in combined microwave-hot air drying. Food Bioprod. Process., 92:259-265.
Karacabey, E., Baltacıoğlu, C., and Çevik, M. (2011). Microwave drying of Jerusalem artichoke (Helianthus tuberosus L.). Akademik Gıda., 9(6):13-22.
Longvah, T., Mangthya, K., and Ramulu, P. (2011). Nutrient composition and protein quality evaluation of eri silkworm (Samiaricinii) prepupae and pupae. Food Chem., 128:400-403.
Midilli, A.H. Kucuk, H., and Z. Yapar, Z. (2002). A new model for single layer drying. Dry. Technol., 20(7):1,503-1,513.
Mirzaee, E., Rafiee, S., and Keyhani, A. (2010). Evaluation and selection of thin-layer models for drying kinetics of apricot (cv. NASIRY). Agric. Eng. Int.: CIGR J., 12(2):111-116.
Mujumdar, A.S. and Devahastin, S. (2000). Fundamental principles of drying (pp. 1-22) in S. Devahastin (Ed.) Mujumdar’s Practical Guide to Industrial Drying. Exergex, Brossard.
Mujumdar, A.S. (Ed.) (2007). Handbook of Industrial Drying. 3rd edition. CRC press, Boca Raton.
Nowak, V., Persijn, D., Rittenschober, D., and Charrondiere, U. R. (2016). Review of food composition data for edible insects. Food Chem., 193:39-46.
Paengkanya, S., Soponronnarit, S., and A. Nathakaranakule. (2015). Application of microwaves for drying of durian chips. Food Bioprod. Process., 96:1-11.
Raksakantong, P., Meeso, N., Kubola, J., and Siriamornpun, S. (2010). Fatty acids and proximate composition of eight Thai edible tericolous insects. Food Res. Int., 43(1):350-355.
Serowik, M., Figiel, A., Nijman, M., Pudlo, A., Chorazyk, D., Kopec, W., Krokosz, D., and Rychicka-Rybska, J. (2018). Drying characteristics and properties of microwave-assisted spouted bed dried semi-refined carrageenan. J. Food Eng., 221:20-28.
Sharma, G.P., and Prasad, S. (2006). Optimization of process parameters for microwave drying of garlic cloves. J. Food Eng., 75:441-446.
Silva, F.A., Marsaioli Jr., A., Maximo, G.J., Silva, M.A.A.P., and Gonçalves, L.A.G. (2006). Microwave assisted drying of macadamia nuts. J. Food Eng., 77:550-558.
Srikiatden, J. and Roberts, J.S. (2007). Moisture transfer in solid food materials: a review of mechanisms, models, and measurements. Int. J. Food Prop., 10(4):739-777.
Tirawanichakul, S., Saenaratana, N., Boon-yakiat, P., and Tirawanichakul, Y. (2011). Microwave and hot air drying of cashew nut: drying kinetics and quality aspects. Proceeding of IEEE Colloquium on Humanities, Science and Engineering Research, Renang, p. 825-830.
Tulek, Y. (2011). Drying kinetics of oyster mushroom (Pleurotus ostreatus) in a convective hot air dryer. J. Agr. Sci. Tech., 13:655-664.
Usub, T., Lertsatitthankorn, C., Poomsa-ad, N., Wiset, L., Siriamornpun, S. and Soponronnarit, S. (2010). Thin layer solar drying characteristics of silkworm pupae. Food Bioprod. Process., 88:149-160.
van Huis, A., Van Itterbeeck, J. Klunder, H. Mertens, E. Hal-loran, A. Muir, G., and Vantomme, P. (2013). Edible insects: Fu-ture prospects for food and feed security. In: Food and Agri-culture Organization of the United Nations (FAO) Forestry Paper, vol. 171. p. 67-79.
Walde, S.G., Balaswamy, K., Velu, V., and Roa, D.G. (2002). Microwave drying and grinding characteristics of wheat (Triticum aestivum). J. Food Eng., 55:271-276.
Wray, D. and Ramaswamy, H.S. (2015). Novel concepts in microwave drying of foods. Dry. Technol., 33:769-783.
Yates-Doerr, E. (2015). The world in a box? Food security, edible insects, and “One World, One Hearth” collaboration. Social Science and Medicine, 129:106-112.
Yousefi, A., Niakousari, M., and Moradi, M. (2013). Microwave assisted hot air drying of papaya (Carica papapy L.) pretreated in osmotic solution. Afr. J. Agric. Res., 8(25):3,229-3,235.
