期刊
FOOD CHEMISTRY
卷 210, 期 -, 页码 18-25出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.04.045
关键词
Pyrus communis; Superficial scald; alpha-Farnesene; Conjugated trienols; Antioxidants; Antioxidant enzymes; Sunlight exposure
资金
- Columbia Gorge Fruit Growers Association
- NW Fresh Pear Research Committees
Influence of preharvest sunlight exposure on superficial scald development in 'd'Anjou' pears during cold storage was investigated. The biochemical changes related to scald including alpha-farnesene, conjugated trienols (CTols), antioxidants, antioxidant enzyme activities were monitored among separated blushed and shaded peels of unbagged fruit as well as the whole peel of bagged fruit. In unbagged fruit, scald symptom was restricted to shaded peel; while there was no difference in alpha-farnesene between blushed and shaded peels, CTols increased significantly in shaded peel along with scald development after 3 months storage. Bagging treatment increased both alpha-farnesene and CTols significantly and enhanced scald. Preharvest sunlight exposure significantly increased certain antioxidant contents and antioxidant enzyme activities in blushed peel at harvest and during storage. These results reveal a direct role of CTols during development of scald, however, antioxidant systems may play an important role in alpha-farnesene oxidation to CTols and scald susceptibility in 'd'Anjou pears. (C) 2016 Elsevier Ltd. All rights reserved.
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