期刊
FOOD CHEMISTRY
卷 169, 期 -, 页码 417-423出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.08.014
关键词
Mango fruit; UV-B; Nitric oxide; Ion leakage; Malondialdehyde (MDA); Postharvest deterioration; Cold storage
资金
- Natural Science Foundation of China [81072998, 81373907]
- Hangzhou Normal University [2012QDL018, 2011QDL20]
Effects of UV-B radiation on chilling injury, ripening and endogenous nitric oxide (NO) levels in mango fruit were evaluated. Chilling injury index, ion leakage, and malondialdehyde (MDA) content of the fruit pretreated with 5 kJ m(-2) UV-B for 4 h were significantly lower than those of the control during fruit ripening at ambient temperature following cold storage at 6 degrees C for 10 days. Fruit firmness of the mangoes irradiated with UV-B was significantly higher than the control during the ripening period. Endogenous NO levels of the UV-B-irradiated fruit were rapidly increased after UV-B treatment. Pre-treatment of mangoes with the NO specific scavenger, not only abolished UV-B-triggered NO accumulation, but also suppressed the UV-B-reduced chilling injury, oxidative damage, and ripening delay of the fruit. Together, the results suggest that UV-B treatment may enhance chilling tolerance and delay fruit ripening of mangoes by triggering endogenous NO generation in the fruit. (C) 2014 Elsevier Ltd. All rights reserved.
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