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Irradiation at less than 1?kGy shows a potential to be used as a postharvest quarantine treatment for Korean citrus fruits

Two Korean citrus fruits, Jinjihyang and Chunggyun, were exposed to gamma irradiation at 0, 0.4 and 1?kGy as an ionizing quarantine treatment and were then subjected to evaluations of physicochemical and sensory quality attributes during storage at 4???1??C for 0, 10 and 20?days. Upon irradiation at 1?kGy, the narinrutin content of Jinjihyang significantly decreased (109.64?94.80?mg/100?g), while hesperidin content remained stable. However, both flavonoids decreased significantly during storage in both fruit varieties. Vitamin C was stable after irradiation but a significant decrease (42.97?27.21?mg/100?mL) was observed in 1?kGy-

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06 April, 2018

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Two Korean citrus fruits, Jinjihyang and Chunggyun, were exposed to gamma irradiation at 0, 0.4 and 1?kGy as an ionizing quarantine treatment and were then subjected to evaluations of physicochemical and sensory quality attributes during storage at 4???1??C for 0, 10 and 20?days. Upon irradiation at 1?kGy, the narinrutin content of Jinjihyang significantly decreased (109.64?94.80?mg/100?g), while hesperidin content remained stable. However, both flavonoids decreased significantly during storage in both fruit varieties. Vitamin C was stable after irradiation but a significant decrease (42.97?27.21?mg/100?mL) was observed in 1?kGy-irradiated sample at the 20th day of storage. Brix, organic acids, and sensory properties of both fruits were not affected by irradiation or storage. The 1?kGy-treated fruits showed the highest titratable acidity (%) but this was not reflected in the sensory scores, even though Jinjihyang was more susceptible to irradiation than Chunggyun. Overall, irradiation at less than 1?kGy shows a potential to be used as a postharvest quarantine treatment for Korean citrus fruits. ? SourcesPostharvest irradiation as a quarantine treatment and its effects on the physicochemical and sensory qualities of Korean citrus fruitsYunhee Jo, Hyun-A Nam, Sudha Rani Ramakrishnan, Mi-Eun Baek, Sang-Bin Lim, Joong-Ho KwonScientia Horticulturae, Volume 236, 16 June 2018, Pages 265?271https://www.sciencedirect.com/science/article/pii/S0304423817307525 Picture by?Australian Institute of Food Safety?
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