期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 88, 期 6, 页码 996-1006出版社
WILEY
DOI: 10.1002/jsfa.3180
关键词
Royal Gala; Autumn Gold; Delicious; ethylene inhibition; cuticle; microcracking; ultrastructure; platelet; bioregulator; maturity
BACKGROUND: Certain apple cultivars develop a greasy feel when overripe. Treating fruits with the ripening inhibitor 1-methylcyclopropene (1-MCP, SmartFresh (TM)) reduces fruit greasiness. This study examines the nature of this phenomenon. 'Royal Gala' apples were treated with 1-MCP at 1.0 mu 1 L-1 following harvest. Periodically, during storage at -1 degrees C for up to 6months, fruits were evaluated for internal ethylene concentration, fruit epicuticular wax morphology (using scanning electron microscopy) and non-polar organic solvent-extractable (NPOSE) wax constituents of the cuticle (using gas chromatography/mass spectrometry). RESULTS: In 2004, 1-MCP strongly inhibited internal ethylene production; however, total weight of NPOSE wax during storage was unaffected by treatment. In 2005, several wax constituents present in both 'Autumn Gold' and 'Royal Gala' showed differences during storage. In 2006, cuticular wax constituents comprising 80% of the total from 'Royal Gala' showed no treatment differences. Although several minor constituents did exhibit differences within treatment and sampling date, these did not appear sufficient to cause the subtle differences in surface wax morphology. CONCLUSION: 1-MCP strongly inhibited ethylene production and delayed development of certain wax constituents thought responsible for fruit greasiness during cold storage. Subtle differences in surface wax morphology appeared unrelated to wax production. Published in 2008 by John Wiley & Sons, Ltd.
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