Effective Parameters in Hot Air Drying Process on Qualitative Properties of Grapefruit (Citrus paradise L.) and Selection of a Suitable Mathematical Thin-Layer Drying Model
محورهای موضوعی : food microbiologyZ. Moezzi 1 , S. Movahhed 2 , H. Ahmadi Chenarbon 3
1 - Graduated Student of the Department of Food Science and Technology, College of Agriculture, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran.
2 - Associated Professor of the Department of Food Science and Technology, College of Agriculture, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran.
3 - Assistant Professor of the Department of Agronomy, College of Agriculture, Varamin - Pishva Branch, Islamic Azad University, Varamin, Iran.
کلید واژه: Activation energy, Diffusivity, Grapefruit, Hot Air Drying, Mathematical Modeling,
چکیده مقاله :
The thin-layer drying behavior of Grapefruit slices is experimentally investigated in a convective dryer and the mathematical modeling by using thin-layer drying models is performed. In the present study, tests were conducted using three air temperatures (45, 55, 65 °C), two hot air velocities (1 and 2 ms-1), two-bed depth (1 and 2 cm) and three replications for each treatment. Based on the results, the best drying time was measured at 65 °C, hot air velocity of 2 ms-1 and bed depth of 1cm for 73 min. The calculated maximum value of effective moisture diffusivity coefficient was 7.44 × 10-8 m2s-1, and the minimum activation energy was 16.09 kJ.mol-1, at 65 °C, hot air velocity of 2 ms-1 and bed depth of 1cm. In the same vein, the maximum value of vitamin C (32.03 mg. (100 g)-1) was obtained at 55 °C, hot air velocity of 2 ms-1 and bed depth of 1cm. In addition, the page equation was found to give better predictions than the others. It is worth to note that the minimum value of change color (23.76) was measured at 45 °C, hot air velocity of 2 ms-1 and bed depth of 1cm.
Abd Ghafar, M. F, Nagendra Prasad, K., Weng, K. K. & Ismail, A. (2010). Flavonoid, hesperidine, total phenolic contents and antioxidant activities from Citrus species. African Journal of Biotechnology, 9(3), 326-330.
Ahmadi Chenarbon, H., Minaei, S., Bassiri, A. R., Almassi, M., Arabhosseini, A. & Motevali, A. (2012). Effect of drying on the color of St. John’s wort (Hypericum perforatum L.) leaves. International Journal of Food Engineering, 8(4), 9-14.
Akgun, N. A. & Doymaz, I. (2005). Modelling of olive cake thin-layer drying process. Journal of Food Engineering, 68, 455-461. https://doi.org/10.1016/j.jfoodeng.2004.06.023.
Akpinar, E., Midilli, A. & Bicer, Y. (2003). Single layer dryingbehaviour of potato slices in a convective cyclone dryer andmathematical modelling. Energy Conversion and Management, 44, 1689–1705. https://doi.org/10.1016/S0196-8904 (02) 00171-1
Albanese, D., Cinquanta, L., Cuccurullo, G. & Di Matteo, M. (2013). Effects of microwave and hot‐air drying methods on color β‐carotene and radical scavenging activity of apricots. International Journal of Food Science & Technology, 48(6), 1327-1333. https://doi.org/10.1111/ijfs.12095.
Anon. (2000). Iranian National Standard, No: 5609. Institute of Standard and Industrial Research of Iran. Fruits and Vegetables. Vitamin C measurement.
Barroca, M. J. & Guine, R. (2012). Effect of drying treatments on texture and color of vegetables (pumpkin and green pepper). Food and Bioproducts Processing, 90, 58-63. https://doi.org/10.1016/j.fbp.2011.01.003.
Chen, D., Zheng, Y. & Xifeng, Z. (2012). Determination of effective moisture diffusivity and drying kinetics for poplar sawdust by thermogravimetric analysis under isothermal condition. Bioresourse Technology, 107, 451–455. https://doi.org/10.1016/j.biortech.2011.12.032.
Crank, J. (1975). The mathematics of diffusion, 2nd Edition. Oxford, Clarendon presses.
Dehghan Nasiri, F., Mohebbi, M., Tabatabaee Yazdi, F. & Haddad Khodaparast, M. H. (2011). Kinetic modeling of mass transfer during deep fat frying of shrimp nugget prepared without a pre-frying step. Food and Bioproducts Processing, 89(3), 241–247. https://doi.org/10.1016/j.fbp.2010.11.009.
Doymaz, I. & Pala, M. (2002). Hot-air drying characteristics of red pepper. Journal of Food Engineering, 55, 331–335. https://doi.org/10.1016/S0260-8774(02)00110-3.
Doymaz, I. (2004). Convective air drying characteristics of thin layer carrots. Journal of Food Engineering, 61, 359–364. https://doi.org/10.1016/S0260-8774(03)00142-0.
Erenturk, S., Gulaboglu, M. S. & Gultekin, S. (2004). The thin layer drying characteristics of rosehip. Biosystem Engineering, 89(2), 159–166. https://doi.org/10.1016/j.biosystemseng.2004.06.002
Ertekin, C. & Yaldiz, O. (2004). Drying of eggplant and selection of a suitable thin layer drying model. Journal of Food Engineering, 63, 349–359. https://doi.org/10.1016/j.jfoodeng.2003.08.007
Evin, D. (2012). Thin layer drying kinetics of Gundelia tournefortii L. Food and Bioproducts Processing, 90, 323-332.
Fethi Mechloch, R., Elfalleh, W., Ziadi, M., Hannachi, H., Chwikhi, M., Ben Aoun, A. & Elakesh, I. (2012). Effect of different drying methods on the physico-chemical properties of Tomato variety “Rio Grande”. International Journal of Food Engineering, 8(2), 1-13.
George, J. P. & Datta, A. K. (2002). Development and validation of heat and mass transfer models for freeze-drying of vegetable slices. Journal of Food Engineering, 52, 89–93.
González, F., Igual, M., Camacho, M. M. & Martínez-Navarrete, N. (2018). Impact of temperature, gum Arabic and carboxymethyl cellulose on some physical properties of spray-dried grapefruit. International Journal of Food Engineering, 14, 1–11.
Goyal, R. K., Kingsly, A. R. P., Manikantan, M. R. & Ilyas, S. M. (2007). Mathematical modelling of thin layer drying kinetics of plum in a tunnel dryer. Journal of Food Engineering, 79, 176–180.
Hevia, F., Berti, M., Wilckens, R. & Cifuentes, P. (2002). Quality and yield in St. John's wort (Hypericum perforatum L.). Harvested in different phonological stages. Acta Agronomica Hungarica, 50, 349-358.
Igual, M., García-Martínez, E., Camacho, M. M. & Martínez-Navarrete, N. (2010). Effect of thermal treatment and storage on the stability of organic acids and the functional value of grapefruit juice. Food Chemistry, 118, 291–299.
Lahsasni, S., Kouhila, M., Mahrouz, M. & Jaouhari, J. J. (2004). Thin layer convective solar drying and mathematical modeling of prickly pear peel (Opuntia ficus indica). Energy, 29, 211–224.
Minaei, S., Ahmadi Chenarbon, H., Motevali, A. & Arabhosseini, A. (2014). Energy consumption, thermal utilization efficiency and hypericin content in drying leaves of St. John’s wort (Hypericum perforatum L.). Journal of Energy in Southern Africa, 25(3), 27-35.
Moraga, G., Igual, M., García-Martínez, E., Mosquera, L. H., Martínez-Navarrete, N. (2012). Effect of relative humidity and storage time on the bioactive compounds and functional properties of grapefruit powder. Journal of Food Engineering, 112, 191–199.
Mujumdar, A. S. (2000). Drying Technology in Agriculture and Food Science. Science Publisher, Inc. P. 313.
Samira, S., Thuan-Chew Tan, T. C. & Azhar, M. E. (2014). Effect of ribose-induced Maillard reaction on physical and mechanical properties of bovine gelatin films prepared by oven drying. International Food Research Journal, 21(1), 269-276.
Togrul, I. T. & Pehlivan, D. (2002). Mathematical modeling of solar drying of apricots in thin layers. Journal of Food Engineering, 55, 209–216.
Tsami, E., Maroulis, B., Marinos-Louris, D. & Saravacos, G. D. (1990). Heat of sorption of water in dried fruits. International Food Research Journal, 25, 350–359.
Yagcioglu, A., Degirmencioglu, A. & Cagatay, F. (1999). Drying characteristic of laurel leaves under different conditions. Proceeding of the 7th International Congress on Agricultural Mechanization and Energy. P. 565-569.
Zecchi, B., Clavijo, L., Martinez, Gaeeeiro, J. & Gerla, P. E. (2011). Modeling and minimizing process time of combined convective and vacuum drying of mushrooms and parsley. Journal of Food Engineering, 104, 49–55.
Zhang, M., Tang, J., Mujumdarc, A. S. & Wang, S. (2006). Trends in microwave related drying of fruits and vegetables. Trends in Food Science and Technology, 17, 524–534.
