期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 42, 期 5, 页码 1009-1014出版社
ELSEVIER
DOI: 10.1016/j.lwt.2008.12.012
关键词
Chinese winter jujube; (Zizyphus jujuba Mill. cv. Dongzao); Nitric oxide; Phenolic metabolism; Quality
资金
- National Key Technology R&D Program in the 11th Five year Plan of China [2006BAD22B04]
The effect of nitric oxide fumigation on phenolic metabolism of harvested Chinese winter jujube in relation to the fruit quality was investigated. The fruits were fumigated for 3 h with NO (0, 10, 20 and 30 mu l/1) then stored at 22 degrees C and RH 95%. Changes in color, phenol and anthocyanin levels in pericarp, activities of the related enzymes, and total soluble solids and vitamin C from mesocarp were measured. The results showed that treatment with 20 mu l/l NO significantly slowed the increase in red index, inhibited changes of polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL) activities, maintained a low total anthocyanin content and a high total phenol content, and delayed the increase of soluble solids and decrease of vitamin C. Treatment with NO solution at less than 1 mu mol/l exhibited inhibitory effects on in vitro PPO and PAL activities in a dose-dependent manner. Crown Copyright (c) 2009 Published by Elsevier Ltd. All rights reserved
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