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Food Chem

Title:		Effect of storage under extremely low oxygen on the volatile composition of 'Royal Gala' apples
Author(s):		Both V; Brackmann A; Thewes FR; Ferreira Dde F; Wagner R;
Address:		"Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Electronic address: vanderleiboth@yahoo.com.br. Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Department of Food Science and Technology, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil"
Journal Title:		Food Chem
Year:		2014
Volume:		20140205
Issue:
Page Number:		50 - 57
DOI:		10.1016/j.foodchem.2014.01.094
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"The aim of this work was to assess the profile of volatile compounds in 'Royal Gala' apples stored under controlled atmosphere (CA), with O(2) levels ranging from 1.0kPa to as low as 0.5kPa during 8months (0.5 degrees C), followed by 7days of shelf-life at 20 degrees C. Volatile compounds were collected via solid-phase microextraction (HS-SPME) and analysed by gas chromatography. Straight and branched-chain esters exhibited a distinct pattern. The emission of straight-chain esters decreased under extremely low O(2) (0.5kPa), while branched-chain esters were not significantly affected in such condition. 2-Methyl-butyl acetate, a significant contributor to the 'Royal Gala' aroma, was higher in intermediate O(2) concentration, suggesting that lowering the O(2) levels down to 0.7kPa does not negatively affect the volatile composition of 'Royal Gala' apples, as compared to the standard CA (1.0kPa O(2)). The remaining volatile compounds were not strongly affected by storing fruits under extremely low O(2)"
Keywords:		Esters/analysis Food Storage/instrumentation/*methods Fruit/*chemistry Malus/*chemistry Oxygen/*analysis Pressure Volatile Organic Compounds/*chemistry Aroma Controlled atmosphere Ethylene Malus domestica Volatile compounds;
Notes:		"MedlineBoth, Vanderlei Brackmann, Auri Thewes, Fabio Rodrigo Ferreira, Daniele de Freitas Wagner, Roger eng Evaluation Study Research Support, Non-U.S. Gov't England 2014/03/19 Food Chem. 2014 Aug 1; 156:50-7. doi: 10.1016/j.foodchem.2014.01.094. Epub 2014 Feb 5"