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Effects of lighting with LED lights of different colours on phytochemical properties of green leaves from red, yellow and white onion (Allium cepa L.) cultivars |
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| รหัสดีโอไอ | |
| Creator | Fatma Ergun |
| Title | Effects of lighting with LED lights of different colours on phytochemical properties of green leaves from red, yellow and white onion (Allium cepa L.) cultivars |
| Contributor | Demirel Ergun, Murat Isik |
| Publisher | Maejo University |
| Publication Year | 2569 |
| Journal Title | Maejo International Journal of Science and Technology |
| Journal Vol. | 20 |
| Journal No. | 1 |
| Page no. | 52 |
| Keyword | LED light, red onion, yellow onion, white onion, Allium cepa L., phytochemical properties, total phenolic content, total flavonoid content, antioxidant activity |
| Website title | Maejo International Journal of Science and Technology |
| ISSN | 1905-7873 |
| Abstract | Onion (Allium cepa L.) is a globally consumed vegetable renowned for its functional and medicinal properties. This study investigated the phytochemical content and antioxidant capacity of fresh onion leaves from red (I), yellow (II) and white (III) onion varieties cultivated under red (RL), blue (BL), green (GL) and white (WL) LED lighting. Post-harvest onion extracts were analysed for total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity. The highest TPC (0.35 0.02 mg gallic acid equivalent/g fresh weight) and TFC (1.57 0.04 mg quercetin equivalent/g fresh weight) were observed in the RLI group, whereas the lowest values were recorded in the GLIII group (0.16 0.03 mg gallic acid equivalent/g fresh weight) and GLI group (0.58 0.05 mg quercetin equivalent/g fresh weight). Antioxidant capacity assessment via the cupric ion reducing antioxidant capacity assay revealed that the RLI group exhibited the highest reducing power with a trolox equivalent antioxidant capacity of 0.4878, surpassing all other treatments. In conclusion LED light colours significantly influence the phytochemical and antioxidant profiles of onion foliage, with red LED light demonstrating a consistently positive effect on bioactive compound accumulation. These findings suggest the potential application of LED lighting technology in onion cultivation for the enrichment of bioactive compounds. |
