This study was carried out to determine the effects of ultraviolet-B (UV-B) and LED light on improving postharvest quality of 0900 Ziraat cherry fruits. In the present study, UV-B treated to cherry fruits 10, 20, and 40 min, and then stored dark conditions. On the other hand, the blue (M), red (KR) and ultraviolet-A (UVA) LED light had applied to fruit during storage, continuously. Fruits without application were used as a control. Cherry fruits were stored at 4±1°C temperature with 85-90% RH for 35 days. As a result of the study, the best treatment in terms of increasing the TSS/TA rate (19.3), fructose (5.27%), glucose (6.22%), total soluble phenol (170.16 mg/100 mL CAE) and anthocyanin content (12.11 mg/kg FW), red color, and taste quality (4.63) of fruits was UVB20. It has also been seen that the KR treatment could be used to reducing the titratable acidity content, and increase the amount of fructose, total soluble phenol. The UV-A LED treatment is particularly significant in reducing weight loss, and providing in the fruit stalk remains green. Also, the treatments of both UVB and LED improved the color quality of cherries by increasing brightness, darkening red color, and protection of anthocyanins, whereas increased the EL. As a result, it might be concluded that the UVB20 (5.95 kJ / m2s) treatment was the best and usable treatment to maintaining both biochemical and taste quality cherry fruits during cold storage.

The aim of this study was to examine the effect of five different wavelengths of light on the comfrey plant (Symphytum officinale) (family Boraginaceae). The light source and wavelengths used in the study were UV-A (390-410 nm), blue (465-485 nm), red (620-630 nm) and cool white (CW) daylight (400-700 nm, 6500 K), LED (Light Emitting Diode). In the study, each of the 5 different light applications was applied for 45 days (T1: 100% blue; T2: 100% red; T3: 60% blue + 35% red + 5% UV-A; T4: 100% CW daylight; T5: 80% CW + 20% red). The experiments were carried out under conditions of 22C temperature, 60% humidity, 16/8 hours light/dark and 180 µmol.m-2.s-1 Photosynthetically Active Radiation (PAR). After each application, measurements were taken of number of leaves, number of roots, height of plant, amount of chlorophyll in leaves, leaf colour and brightness. According to data obtained, the different wavelengths of the coloured light applied in the growing environment created a change in colour and brightness of the leaves, height of the plant, length of the roots, and number of leaves and roots.