Enhancement of the Quality of Onion Drying Using Tray Dryer

Abstract

<p class="E-JOURNALAbstractBodyEnglish">Previous reports showed that there has been a continuous increase in the annual production of onion in Indonesia, and it is inversely proportional to the market price. The price drop is often caused by the high water content, which makes it easy to rot. Preservation of onions through a tray dryer is a good preservation method because it is effective and does not require much energy. Therefore, this study aims to determine the effect of variations in time, material thickness, and air velocity on the drying rate of onions. The samples were sliced to a size of 2 - 5 mm, followed by drying for 60 min using a tray dryer with different air rates between 4 - 7 m/s, and the rate of the process was observed every 15 min. The results showed that the drying time reduced the humidity in the chamber. The highest rate of 0.525 g/min was obtained at the peak air rate of 7 m/s. ANOVA results revealed that variations in time, onion thickness, and flow rate have a significant effect on increasing the drying rate of onions. This indicates that the method can be an effective and efficient solution to optimize the drying of the commodity.</p>

PENGARUH PERENDAMAN, WAKTU DAN KETEBALAN PADA PENGERINGAN JAHE PUTIH (Zingiber officinale var. Amarum) MENGGUNKAN TRAY DYER DAN SOLAR DRYER

“…Proses pengeringan oven (oven drying) lebih cepat jika dibandingkan dengan matahari, namun metode ini hanya dapat mengeringkan bahan dalam skala kecil dan sulit untuk mengontrol suhu rendah [8]. Sedangkan pengeringan menggunakan tray dryer sangat cocok digunakan pada proses pengeringan bahan yang sensitif terhadap panas dan mudah berjamur [9]. Tray dryer termasuk ke dalam sistem pengering yang menggunakan aliran udara panas untuk mengeringkan produk sehingga dapat membuat proses pengeringan menjadi lebih cepat dan efektif.…”

Effect of Immersion Concentration in Salt Solution, Drying Time and Air Velocity on Drying Wet Noodles Using a Tray Dryer and Solar Assistance

“…The main apparatus used in this study is a tray dryer as shown in Figure 1 [8,19]. The description of the tool in Figure 1 is as follows; Heater power button (1), Temperature controller (2), Fan power button (3), Fan speed control button (4), Temperature control button (T1-T4) (5), Temperature sensor (T1-T4) (6), Sensor of dry bulb temperature before rack (7), Wet bulb temperature sensor before rack (8), Dry bulb temperature sensor after rack (9), Wet bulb temperature sensor after rack (10), Analytical balance (11), and Material rack (12). Tray dryer is a plate-shaped dryer equipped with shelves that are used to dry solid materials.…”

“…The appropriate water content makes the noodles not easily overgrown with fungus so they can be stored longer [4], therefore drying the noodles is important [5,6]. Drying can also increase food stability and minimize physical and chemical changes during storage [7,8]. Drying is a complex process involving heat and the transfer of moisture in the product to the surface of the material and then to the surrounding medium [9].…”

Evaluation of Banana Sale Drying Performance Using a Tray Dryer with Mathematics Modeling

“…One such method is the tray dryer, which utilizes a multilevel drying technique with hot air flow (Fadilah et al, 2022;Muharja et al, 2023;Wardhani et al, 2023;Zikrillah et al, 2023). Primarily employed for drying solid foodstuffs like fruits, vegetables, and spices, the tray dryer offers promising results (Das & Das, 2019).…”