期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 101, 期 13, 页码 5671-5677出版社
WILEY
DOI: 10.1002/jsfa.11221
关键词
low temperature; Mangifera indica L; physical stress; storage duration; enzymes activities; anatomy
资金
- Horticulture Innovation Australia Ltd. [MG10009, MG13016]
- Australian Government
- The Queensland Government (Department of Agriculture and Fisheries)
- The University of Queensland
- Chinese Scholarship Council
Under-Skin Browning (USB) in 'Honey Gold' mango fruit is affected by factors such as vibration, holding temperature, and sap components. The severity of USB is influenced by temperature during storage and the concentration of phenolics in affected tissue. Polyphenol oxidase (PPO) and peroxidase (POD) activities are not found to be regulatory factors in USB expression, while sap components may play a role in USB development under specific postharvest conditions.
BACKGROUND Under-Skin Browning (USB) is a physiological skin disorder that significantly reduces quality of 'Honey Gold' mango (HG) fruit. Relationships between potential causative factors (vibration, holding temperature, sap) and expression factors (enzymes activities, phenolic concentration, anatomy) were investigated. RESULTS USB incidence was 2.6-3.6-fold higher in ripe HG fruit vibrated for 3-18 h at 12 degrees C to simulate transport damage and held then at 12 degrees C for 8 days compared to control fruit held under the same conditions. USB severity of fruit lightly abraded with sand paper to simulate physical damage and artificially induce USB was higher in fruit held at 10 degrees C than at 6-8 degrees C or 12-13 degrees C for 6-8 days. Compared to non-affected skin, USB-affected tissue had a 7.4% increase in total phenolics concentration. However, polyphenol oxidase (PPO) and peroxidase (POD) activities decreased by 19%. Anatomical similarities were observed between USB symptoms and sapburn caused by spurt sap or terpinolene (a major sap component) to abraded skin areas. Incidence of sapburn was higher in abraded fruit held at 12 degrees C than at 20 degrees C. CONCLUSION Holding HG mango fruit at 10 degrees C can intensify USB. Activities of PPO and POD appear not to be regulatory factors in USB expression in HG. Sap components may be involved in USB expression under conducive postharvest conditions. (c) 2021 Society of Chemical Industry.
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