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J Sci Food Agric

Title:		Exogenous methyl jasmonate diminishes the formation of lipid-derived compounds in boiled potato (Solanum tuberosum L.)
Author(s):		Ruiz Del Castillo ML; Flores G; Blanch GP;
Address:		"Instituto de Fermentaciones Industriales, Consejo Superior de Investigaciones Cientificas, Juan de la Cierva 3, E-28006 Madrid, Spain. mruiz@ifi.csic.es"
Journal Title:		J Sci Food Agric
Year:		2010
Volume:		90
Issue:		13
Page Number:		2263 - 2267
DOI:		10.1002/jsfa.4080
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"BACKGROUND: During potato storage the tubers tend to develop off-flavours, mainly due to lipid-derived aldehydes, whose formation is increased after boiling or processing. This may become a problem when boiled or precooked potatoes are used. Methyl jasmonate (MJ) is a phytohormone capable of modifying plant and food composition. The aim of this work was to control the formation of off-flavours in different cultivars of raw potato during storage by MJ treatment. RESULTS: The use of Carbowax 20M as support in MJ emulsion resulted in significantly (P < 0.05) lower levels of lipid-derived compounds than the use of lanolin. Levels of the lipid-derived aldehydes propanal, hep-2-enal, nonanal, oct-2-enal and hexanal, although dependent on variety, generally decreased significantly (P < 0.05) after treatment with MJ/Carbowax 20M emulsion. Sugar-derived compounds such as pyridine and furfural, however, were not affected by this treatment. CONCLUSION: Treatment with MJ/Carbowax 20M can be used to diminish the formation of off-flavours in boiled potato. However, this treatment is not useful to avoid the sweetening caused by sugar-derived products. Additional advantages of exogenous MJ are a delay in the appearance of sprouting and aging and hence prolongation of the storage life of potato tubers"
Keywords:		Acetates/*chemistry Aldehydes/*analysis/chemistry Cyclopentanes/*chemistry Emulsifying Agents *Food Handling Food Preservatives/*chemistry Gas Chromatography-Mass Spectrometry Lipids/*chemistry Oxidation-Reduction Oxylipins/*chemistry Plant Growth Regulat;
Notes:		"MedlineRuiz del Castillo, Maria Luisa Flores, Gema Blanch, Gracia Patricia eng Comparative Study Research Support, Non-U.S. Gov't England 2010/07/16 J Sci Food Agric. 2010 Oct; 90(13):2263-7. doi: 10.1002/jsfa.4080"