Skripsi
EFEKTIVITAS PENGGUNAAN GENERATOR OZON DENGAN METODE DIELECTRIC BARRIER DISCHARGE (DBD) PADA KONFIGURASI ELEKTRODA BATANG-SPIRAL DALAM MENGHAMBAT DEKOMPOSISI CABAI MERAH
This study examines the effectiveness of an ozone generator based on the Dielectric Barrier Discharge (DBD) method with a rod–spiral electrode configuration in inhibiting the decomposition of red chili peppers. The rod–spiral electrodes are made of aluminum with an inter‑spiral gap of 1 mm. The applied voltage was varied within the range of 3.5–6.5 kV AC with oxygen supplied as the plasma‑forming gas. The experimental results show that the rod–spiral configuration is capable of producing high ozone concentration. The lowest ozone concentration obtained was 46.64 ppmv at 3.5 kV, and the highest reached 3666.14 ppmv at 6.5 kV. The red chili samples were exposed to ozone using two treatment methods: ozone rinse with normal drying and ozone rinse with ozone drying, with exposure durations of 5, 10, and 15 minutes. The samples were then stored in an incubator (25°C) and in a refrigerator (8°C). Quality evaluation was conducted based on organoleptic tests, weight loss, and water content during the storage period. The ozone treatment successfully slowed down the decomposition process of red chili peppers. After 15 days of storage at 25°C, the control sample experienced a weight loss of 36.5%, whereas the ozone rinse with ozone drying sample exposed for 15 minutes only experienced a weight loss of 17.68%. At 8°C storage, the control experienced a weight loss of 16.74%, while the ozone rinse with ozone drying sample exposed for 15 minutes only showed 10.48%. The ozone rinse with ozone drying treatment also maintained higher water content and better organoleptic quality than the control. Therefore, the DBD ozone generator with a rod–spiral electrode configuration is proven effective in extending the shelf life of red chili peppers and has strong potential to be applied as an environmentally friendly preservation technology for horticultural products.