期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 99, 期 3, 页码 1098-1107出版社
WILEY
DOI: 10.1002/jsfa.9277
关键词
longan (Dimocarpus longan Lour.) fruit; preharvest ZnSO4 spray; storability; postharvest deterioration; pericarp browning; aril breakdown
资金
- earmarked fund for China Agriculture Research System [CARS-33-15]
- Guangdong YangFan Innovative & Entrepreneurial Research Team Project [2014YT02H013]
- Guangdong Sci. Tech. Project [2016A020210042]
BACKGROUND Zinc (Zn) fertilization has been reported to improve the quality and storability of many fruits, but the mechanism had not been systematically studied. In this study, the effect of preharvest 0.2% zinc sulfate (ZnSO4) spray on the storability of longan fruits was investigated. RESULTS The preharvest ZnSO4 spray did not significantly influence the quality but increased the Zn content in longan pericarp by 12.5-fold. More importantly, the treatment significantly reduced the rotting rate, pericarp browning, and aril breakdown of longan fruits stored at room temperature and low temperature. Physiological and biochemical results indicated that the treatment resulted in higher water retention capacity and inhibited the degradation of cellulose, pectin, flavonoid, and phenolics of longan pericarp at the late stages of storage. Consistent with these results, the activity of cellulase, polygalacturonase, polyphenol oxidase, and lipoxygenase was significantly inhibited in the ZnSO4-treated longan pericarp at the late stages of storage. CONCLUSION Higher Zn content in the ZnSO4-treated longan pericarp might help to enhance the resistance against microbial infection, inhibit the hydrolysis of cell wall components, and thus effectively protected the cell wall components, maintained the cellular compartmentation, and prevented the phenolics and flavonoid from degradation by browning-related enzymes. (c) 2018 Society of Chemical Industry
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据