Journal
FOOD CHEMISTRY
Volume 270, Issue -, Pages 385-394Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.06.151
Keywords
Winter jujube; ABA; Composite film; Color development; Anthocyanidin genes
Funding
- National Natural Science Foundation of China, China [31171769, 31470091]
- Innovation Team of Tianjin Forestry & Pomology Research System [ITTFPRS2018009]
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The color change of the jujube fruit after harvest is used as a quality indicator. The effects of abscisic acid (ABA) and a chitosan/nano-silica/ sodium alginate composite film on the color development and qualitative properties of harvested jujube in cold storage were investigated. The results indicate that a composite film could prolong the shelf life of post-harvested winter jujube for approximately 1 month, while the ABA treatment induced ripening and reduced the quality. A significant positive correlation between the a*/b* values, water loss and the malondialdehyde (MDA) content was found for fruits in cold storage. In comparison with the control and ABA-treated fruit, superoxide dismutase (SOD), polyphenol oxidase (PPO) and peroxidase (POD) activities were lower than those in a composite film-treated fruit. In addition, the dihydroflavonol-4-reductase (DFR) is the primary gene that regulates the expression of anthocyanin.
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