TY - JOUR ID - 77458 TI - Convective drying of atmospheric pressure cold plasma pretreatment saffron stigmas: kinetic modeling JO - Journal of Food and Bioprocess Engineering JA - JFABE LA - en SN - AU - Tabibian, Seyed Abolfazl AU - Labbafi, Mohsen AU - Askari, Gholamreza AU - Ghomi, Hamidreza AU - Rezaeinezhad, Alireza AD - Department of Food Science and Technology, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran AD - Transfer Phenomena Laboratory, Department of Food Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran AD - Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran Y1 - 2020 PY - 2020 VL - 3 IS - 2 SP - 87 EP - 94 KW - Saffron stigma KW - Cold plasma KW - Drying KW - Diffusion coefficient KW - Mathematical Modeling DO - 10.22059/jfabe.2020.297658.1046 N2 - In this study, the drying kinetics of saffron stigmas pretreated by atmospheric pressure cold plasma pretreatment (15, 30, 45 and 60 s) followed by hot air drying (60°C and 1.5 m/s) were modeled using 10 conventional mathematical thin layer models. The use of cold plasma pretreatment reduced drying time and enhanced effective moisture diffusivity (Deff). The most accurate models describing behavior of drying process of stigmas were Two-term, Midilli and Kucuk and Wang–Singh models. These models were determined based on the higher value of coefficient of determination (R2) and the lower values of root mean square error (RMSE), chi-square (χ2) and sum of square errors (SSE). In addition, the Newton model did not in accordance with experimental data.  The value of Deff of pre-treated saffron stigmas were in the range of 8.7013×10-9 and 9.1139 ×10-9 m2/s depending on the time of pretreatment. The use of cold plasma pretreatment reduced the surface resistance to moisture transfer, improved the diffusion coefficient, and subsequently, reduced the drying time. UR - https://jfabe.ut.ac.ir/article_77458.html L1 - https://jfabe.ut.ac.ir/article_77458_631f88f4e26fdeceace4dd483f8d3b83.pdf ER -