Effect of composite coating treatment and low-temperature storage on the quality and antioxidant capacity of Chinese jujube (Zizyphus jujuba cv. Junzao)
Yi Yu, Wenbo Guo, Yuxing Liu, Yueying Sang, Wanting Yang, Minrui Guo, Shaobo Cheng and Guogang Chen
Scientia Horticulturae 288: 110372.
2021
บทคัดย่อ
The purpose of this study was to explore the effects of coating treatment using a composite of 1-methylcyclopropene (1-MCP), chitosan and natamycin (NATA) on the quality and antioxidant capacity of Chinese jujube (Zizyphus jujuba cv. Junzao) stored at different temperatures (Room temperature and 0 ± 1 °C). Respiration, ethylene release, and decay rates; Malondialdehyde (MDA); total phenol, flavonoid, and Ascorbic Acid (AsA) contents; Peroxidase (POD), Polyphenol Oxidase (PPO), Superoxide Dismutase (SOD), and Ascorbate Peroxidase (APX) activities; and free-radical scavenging ability were considered. The results showed that the low-temperature composite coating treatment of Chinese jujube effectively inhibits its decay and MDA accumulation; delays its respiration and ethylene release peaks; increases the activities of the antioxidant enzymes POD, SOD, and APX; and inhibits its PPO activity. Furthermore, the jujube retains its high concentrations of total phenols, flavonoids, and AsA as well as its free-radical-scavenging rate into the later storage period. Thus, the low-temperature composite coating treatment is an effective method for improving the postharvest quality of Chinese jujube and extending its preservation period.