Effect of Drying Temperature on Bioactive Compound Content of Red Onion Using Photovoltaic Ventilation Solar Dryers
Suherman Suherman1*, Muhammad Fahri Rizky1, Zaki Bahrul Fikri1, Hadiyanto Hadiyanto1, Zane Vincevica-Gaile2, Anwar Saeed Khan3, Erkata Yandri4,5 and Iswahyudi Iswahyudi6
1Diponegoro University, Semarang 50275, Central Java, Indonesia; 2University of Latvia, Riga LV-1004, Latvia; 3Department of Geography and Geomatics, University of Peshawar (KP), Pakistan; 4Graduate School of Renewable Energy, Darma Persada University, Special Region of Jakarta 13450, Indonesia; 5Center of Renewable Energy Studies, Darma Persada University, Jakarta 13450, Indonesia; 6Universitas Islam Madura, Pamekasan 69317, Madura, East Java, Indonesia.
*Correspondence | SuhermanSuherman, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, Tembalang, Semarang 50275, Central Java, Indonesia; Email:suherman.mz@che.undip.ac.id
Figure 1:
Photovoltaic ventilation solar dryer schematic diagram.
Figure 2:
Temperature and intensity profiles on various variables (a) 50 oC, (b) 45oC, (c) 40 oC, (d) traditional.
Figure 3:
Relative humidity on various variables.
Figure 4:
Wet basis moisture content profile on various variables (I) 50 oC, (II) 45 oC (III) 40 oC, (IV) traditional.
Figure 5:
Drying rate profile on various variables (I) 50 oC, (II) 45 °C, (III) 40 oC, (IV) traditional.
Figure 6:
Temperature and intensity profile variable.
Figure 7:
Data plotting ln Deff vs (1/T).
Figure 8:
Graph of the difference between the observed value and the predicted value of variable I on various variables. (A) Lewis model, (B) Henderson and Pabis model.