Postharvest storage at near-freezing temperature maintained the quality and antioxidant properties of Prunus domestica L. cv. Ximei fruit
2022
Ma, Yanyan | Zhang, Weida | Cheng, Shaobo | Liu, Yuxing | Yang, Wanting | Wang, Yue | Guo, Minrui | Chen, Guogang
P. domestica fruit are highly perishable due to its intense metabolic activity. To increase the storage time while preserving the quality, the effects of postharvest storage at near-freezing temperature (NFTS) (−1 to −1.5 °C) on the physiological indexes and antioxidant enzyme activities of P. domestica fruit were investigated. The results showed that the weight loss rate (4.04 %), soluble solid content (1.08 %), color difference (18.27 %), respiration rate (23.90 %), anthocyanin content (41.13 %), malondialdehyde content (5.39 %), hydrogen peroxide content (13.32 %), and superoxide anion activity (13.97 %) of P. domestica fruit in the NFTS group were reduced, but the firmness (4.95 %), ascorbic acid content (31.71 %), total phenol content (2.54 %), and the activities of superoxide dismutase (SOD, 4.67 %), catalase (CAT, 168.92 %), ascorbate peroxidase (APX, 127.17 %), and peroxidase (POD, 34.54 %) were increased, compared with the room temperature (25 °C) group. Therefore, NFTS could effectively preserve the quality of harvested P. domestica fruit, improve the antioxidant properties, and delay the senescence. This study proposed that NFTS could be used as a promising storage technique to reduce postharvest oxidative stress.
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