Home > V Asia Symposium on Quality Management in Postharvest Systems > UV-C irradiation suppressed mycelial growth and increased antioxidant properties and jasmonic acid in mandarin fruit

Articles

UV-C irradiation suppressed mycelial growth and increased antioxidant properties and jasmonic acid in mandarin fruit

Article number

1336_52

Pages

395 – 404

Language

English

Abstract

UV-C irradiation at low doses has been reported to stimulate the production of secondary metabolites in various fruits.
In this study, the effects of postharvest UV-C treatments on DPPH levels, total phenolic concentration, superoxide dismutase enzyme activity (SOD), jasmonic acid concentration and disease development in mandarins (Citrus reticulata Sai Nam Phung) were investigated.
Both UV-C treatments (5 and 10 kJ m^‑2) retarded mycelial growth in vitro and mycelial density in fruit exposed to 10 kJ m^‑2 UV-C compared to that in control fruit.
The levels of DPPH, total phenolic concentration and jasmonic acid concentration increased significantly (P<0.05) during the first 24 h in the UV-C treated fruits compared to the control.
The SOD activity of the UV-C treated samples was higher than those of the control.
These results indicate that UV-C irradiation of 5 and 10 kJ m^‑2 has a direct germicidal effect and induces a change in bioactive compounds and jasmonic acid concentration, which may disrupt the development of Penicillium spp.

Publication

V Asia Symposium on Quality Management in Postharvest Systems

Authors

A. Safitri, M. Naradisorn, S. Kondo, S. Setha

Keywords

bioactive compounds, Citrus reticulate, Penicillium spp., ultraviolet radiation

Full text

https://doi.org/10.17660/ActaHortic.2022.1336.52

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