Investigating the effects of convective drying conditions on some qualitative and bioactive characteristics of cantaloupe slices using the response surface method

Document Type : Research Article


1 University of Mohaghegh Ardabili

2 Department of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.


Introduction: Drying is a common technology that provides a long post-harvest storage period for products such as cantaloupe. Hot air drying is a method that, if the conditions are optimized, gives the product better appearance and improved textural properties. In this study, drying time, specific energy consumption, energy efficiency, shrinkage, rehydration ratio, changes in total color, phenol and antioxidant content were modeled to optimize drying factors (air temperature and air velocity) using the response surface method.

Materials and methods: The drying processes of the samples were investigated at three temperature levels of 50, 60 and 70 °C and three velocity levels 0.5, 1 and 1.5 m/s. For optimization of the drying conditions (drying time, SEC, energy efficiency, shrinkage, RR, color changes, TPC and AC), the influences of two levels of independent variables including air temperature and air velocity were assessed by response surface method through a face-centered central composite design.

Results and discussion: The results showed that in the drying of cantaloupe using the hot air method by increasing the inlet air temperature and decreasing the air velocity, energy efficiency, rehydration ratio, total phenol content and antioxidant were increased, while drying time, specific energy consumption, shrinkage and color changes were reduced. The optimum point for drying cantaloupe samples was obtained at an air temperature of 70 °C and air velocity of 0.5 m/s. The results showed that drying at higher temperatures increases the desirability index of the model obtained from the response surface method.

Conclusions: The authors believe the outcomes of the present study can be used as a framework for choosing efficient drying parameters for drying cantaloupe or similar fruits in HAD systems

Graphical Abstract

Investigating the effects of convective drying conditions on some qualitative and bioactive characteristics of cantaloupe slices using the response surface method


  • The hot air drying of cantaloupe slice has been carried out.
  • Optimizing the quality and bioactive properties of cantaloupe was done.
  • Specific energy consumption and drying time decreased with increasing air temperature and decreasing air velocity.
  • By increasing air temperature, the rehydration ratio, total phenol content and antioxidant increased.
  • The temperature and air velocity of the dryer were chosen as the most favorable, 70 °C and 0.5 m/s, respectively, with the degree of favorability of 0.993.


Main Subjects

[1] Chang, A., Zheng, X., Xiao, H., Yao, X., Liu, D., Li, X., & Li, Y. (2022). Short- and medium-wave infrared drying of cantaloupe (cucumis melon l.) slices: drying kinetics and process parameter optimization. Processes, 10, 114.
[2] Zadhossein, S., Abbaspour-Gilandeh, Y., Kaveh M., Kalantari, D., & Khalife, E. (2022) Comparison of two artificial intelligence methods (ANNs and ANFIS) for estimating the energy and exergy of drying cantaloupe in a hybrid infrared-convective dryer. J Food Process Preserv. 2022;00:e16836
[3] Mirzaei, S., Ameri, M., & Ziaforoughi, A. (2021). Energy-exergy analysis of an infrared dryer equipped with a photovoltaicthermal collector in glazed and unglazed modes. Renew Energy. 169, 541-556
[4] Cunha, R. M. C. D., Brandão, S. C. R., da Medeiros, R. A. B., da Silva Júnior, E. V.,  da Silva, J. H. F, & Azoubel, P.M. (2020). Effect of ethanol pretreatment on melon convective drying. Food Chem, 333, 127502
[5] Abdullah, R. S. S., Khatri, P., Kumar, L., Kumar, A. & Mujumdar, A. S. (2022). Role of drying technology in probiotic encapsulation and impact on food safety. Drying Technol, DOI: 10.1080/07373937.2022.2044844 (In Press).
 [6] Reis, F.R., Marques, C., de Moraes, A. C. S., & Masson M. L. (2022). Trends in quality assessment and drying methods used for fruits and vegetables. Food Control, 142, 109254
[7] Savas, E. (2022).The modelling of convective drying variables’ effects on the functional properties of sliced sweet potatoes. Foods., 11, 741.
[8] Kıan-pour, N. Fundamental drying techniques applied in food science and technology. IJFER 2020, 6, 35–63
[9] Miranda, M., Vega-Galvez, A., Lopez, J., Parada, G., Sanders, M., Aranda, M., Uribe, E., & Di Scala, K. (2010). Impact of air-drying temperature on nutritional properties, total phenolic content and antioxidant capacity of quinoa seeds (Chenopodium quinoa Wild). Ind. Crop. Prod., 32, 258–263
[10] Aghilinategh, N., Rafiee, S., Hosseinpur, S., Omid, M., & Mohtasebi, S.  S. (2015). Optimization of intermittent microwave–convective drying using response surface methodology. Food Sci Nutri. 3(4), 331–341.
[11] Karaman, S., Toker, O. S., Çam, M., Hayta, M., Dogan, M., & Kayacier, A. (2014). Bioactive and physicochemical properties of persimmon as affected by drying methods. Dry. Technol. 32, 258–267.
[12] Senadeera, W., Adiletta, G., Önal, B., Matteo M. D., & Russo, P. (2020). Influence of Different Hot Air Drying Temperatures on Drying Kinetics, Shrinkage, and Colour of Persimmon Slices. Foods, 9, 101.
[13] Hassan, A. M. A., Zannou, O., Pashazadeh H., Redha, A. A., & Koca, I. (2022). Drying date plum (Diospyros lotus L.) fruit: Assessing rehydration properties, antioxidant activity, and phenolic compounds. J. Food Sci., 1–22
[14] Chikpah, S. K., Korese, J. K., Sturm, B., & Hensel, O. (2022). Colour change kinetics of pumpkin (Cucurbita moschata) slices during convective air drying and bioactive compounds of the dried products. J Agri Food Res. 10, 100409
[15] Monteiro, S. S., da Silva, W. P., Monteiro, S. S., Gomes, J. P., Pereira E. M., & de Lima Ferreir, J. P., (2022). Probiotic coating applied to papaya slices for high quality snack production by convective drying. J Food Process Preserv. 46(1), e16183
[16] Zannou, O., Pashazadeh, H., Ghellam, M., Hassan, A. M. A., & Koca, I. (2021). Optimization of drying temperature for the assessment of functional and physical characteristics of autumn olive berries. J Food Process Preserv. 45(9), e15658
[17] Zzaman, W., Biswas, R., & Hossain, M.A., (2020). Application of immersion pre-treatments and drying temperatures to improve the comprehensive quality of pineapple (Ananas comosus) slices. Heliyon, 6, e05882
[18] Roman, M. C., Fabani, M. P., Luna, L. C., Feresin, G. E., Mazza, G., & Rodriguez, R. (2020). Convective drying of yellow discarded onion (Angaco INTA): Modelling of moisture loss kinetics and effect on phenolic compounds. Inform Process Agr. 7(2), 333-341
[19] Zahoor, I., & Khan M. A., (2019). Microwave assisted convective drying of bitter gourd: drying kinetics and effect on ascorbic acid, total phenolics and antioxidant activity. Food Measure. 13, 2481–2490.
[20] Nakilcioğlu‑Taş, E., Coşan, G., & Ötleş, S. (2021). Optimization of process conditions to improve the quality properties of healthy watermelon snacks developed by hot‑air drying. Food Measure. 15, 2146–2160.
[21] Inyang, U. E., Oboh, I. O., & Etuk B.R. (2018). Kinetic Models for Drying Techniques—Food Materials. Advances Chem Eng Sci. 8, 27–48
[22] Rashidi, M., Amiri Chayjan, R., Ghasemi, A., & Ershadi, A. (2021). Tomato tablet drying enhancement by intervention of infrared - A response surface strategy for experimental design and optimization. Biosystems Eng, 208, 199- 212
[23] Li, X., Liu, J, Cai, J., Xue, L., Wei, H., Zhao, M., & Yang, Y. (2021). Drying characteristics and processing optimization of combined microwave drying and hot air drying of Termitomyces albuminosus mushroom. J Food Process Preserv, 45(12), e16022.
[24] Nurkhoeriyati, T., Kulig , B., Sturm, B., & Hensel, O. (2021). The effect of pre-drying treatment and drying conditions on quality and energy consumption of hot air-dried celeriac slices: Optimisation. Foods, 10, 1758.
[25] Chayjan, R. A., Agha-Alizade, H. H., Barikloo, H., & Soleymani, B. (2012). Modeling some drying characteristics of cantaloupe slices. Cercetări agronomice în Moldova, 2, 5–14.
[26] Kaveh, M. & Abbaspour‐Gilandeh, Y. (2022). Drying characteristics, specific energy consumption, qualitative properties, total phenol compounds, and antioxidant activity during hybrid hot air‐microwave‐ rotary drum drying of green pea. Iran. J. Chem. Chem. Eng. 40, 655–672
[27] Lemus-Mondaca R., Zura-Bravo, L., Ah-Hen, K., & Di Scala, K. (2021). Effect of drying methods on drying kinetics, energy features, thermophysical and microstructural properties of Stevia rebaudiana leaves. J Sci Food Agr. 101 (15), 6484-6495
[28] Kumar, R., Pandey, O.P., Dhiman, S. K., & Kumar, P. (2021). Influence of blanching and drying air temperature on drying kinetics of banana slices. J Biosystems Eng. 45, 375–385
[29] Motevali, A., Minaei, S., Banakar, A., Ghobadian, B., & Khoshtaghaza, M. H. (2014). Comparison of energy parameters in various dryers. Energy ConverManag., 87, 711–725.
[30] Kaveh, M., Abbaspour-Gilandeh, Y., Nowacka, M. (2021). Comparison of different drying techniques and their carbon emissions in green peas. Chem Eng Process: Process Int, 160, 108274
[31] El-Mesery, H. S., Kamel, R. M., & Alshaer W. G. (2022). Thin-layer drying characteristics, modeling and quality attributes of tomato slices dried with infrared radiation heating. Biosci J, 38, e38049
[32] Zhang, Y., Zielinska, M., Vidyarthi, S.K., Zhao J-H, Peia Y-P, Lib, G., Zheng Z-A, Wu, M., Gao, Z.J., & Xia H-W. (2020). Pulsed pressure pickling enhances acetic acid transfer, thiosulfinates degradation, color and ultrastructure changes of “Laba” garlic. Innov Food Sci Emerg Technol. 65, 102438.
[33] Dehghannya J., Kadkhodaei, S., Heshmati, MK., & Ghanbarzadeh B (2019). Ultrasound-assisted intensification of a hybrid intermittent microwave – hot air drying process of potato: Quality aspects and energy consumption. Ultrason, 96, 104–122
[34] Liu, J., Liu, Y., Li, X., Zhu, J., Wang, X., & Ma, L. (2023). Drying characteristics, quality changes, parameters optimization and flavor analysis for microwave vacuum drying of garlic (Allium sativum L.) slices. LWT, 173. 114372.
[35] Bao, X., Min, R., Zhou, K., Traffano-Schiffo, M.V., Dong, Q., & Luo W (2023). Effects of vacuum drying assisted with condensation on drying characteristics and quality of apple slices. J Food Eng. 340, 111286.
[36] Rybak, K., Wiktor, A., Witrowa‐Rajchert, D., Parniakov O., & Nowacka M (2021). The Quality of Red Bell Pepper Subjected to Freeze‐DryingPreceded by Traditional and Novel Pretreatment. Foods, 10, 1943.
[37] Chasiotis V., Nikas, K-S., & Filios, A. (2022). Modeling and optimization of non-isothermal convective drying process of Lavandula  allardii. Information Process Agr. (In Press).
[38] Yuan, L., Zheng, X., & Shen, L. (2022). Continuous microwave drying of germinated red adzuki bean: Effect of various drying conditions on drying behavior and quality attributes. J Food Process Preserv. (In Press)
[39] EL-Mesery, H. S., Tolba, N. M., & Kamel, R. M. (2023). Mathematical modelling and performance analysis of airflow distribution systems inside convection hot-air dryers. Alexandria Eng J. 62, 237-256.
[40] Ghavidelan M. A., & Chayjan R. A. (2017). Application of response surface methodology for optimization of hazelnut drying under infrared fluidized bed. J Food Res. 26(4), 639-65
[41] Xu, Y., Liu, W., Li, L., Cao, W., Zhao, M., Dong, J., Ren, G., Bhandari, B., & Duan, X (2022). Dynamic changes of non-volatile compounds and evaluation on umami during infrared assisted spouted bed drying of shiitake mushrooms. Food Control, 142, 109245.
[42] Xu, Y., Xiao, Y., Lagnika, C., Li, D., Liu, C., Jiang, N., Song, J., & Zhang, M. (2020). A comparative evaluation of nutritional properties, antioxidant capacity and physical characteristics of cabbage (Brassica oleracea var. capitate Var L.) subjected to different drying methods. Food Chem. 30, 124935
[43] Zahoor, I., & Khan, M. A. (2021). Microwave assisted fluidized bed drying of red bell pepper: Drying kinetics and optimization of process conditions using statistical models and response surface methodology. Sci Horticulturae 286, 110209