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J Environ Sci Health B

Title:		2-undecanone and 2-tridecanone in field-grown onion
Author(s):		Antonious GF;
Address:		"Division of Environmental Studies, College of Agriculture, Food Science, and Sustainable Systems, Kentucky State University, Frankfort, Kentucky, USA. george.antonious@kysu.edu"
Journal Title:		J Environ Sci Health B
Year:		2013
Volume:		48
Issue:		4
Page Number:		302 - 307
DOI:		10.1080/03601234.2013.743790
ISSN/ISBN:		1532-4109 (Electronic) 0360-1234 (Linking)
Abstract:		"A field study was conducted to investigate the impact of soil amendments on concentrations of two volatile organic compounds, 2-undecanone and 2-tridecanone, in onion bulbs. The soil in five plots was mixed with sewage sludge, five plots were mixed with yard waste compost, five plots were mixed with laying hen manure each at 15 t acre(-1), and five unamended plots that never received soil amendments were used for comparison purposes. Plots (n = 20) were planted with onion, Allium cepa L. var. Super Star-F1 bulbs. Gas chromatographic/mass spetrometric (GC/MS) analyses of mature onion bulbs crude extracts revealed the presence of two major fragment ions that correspond to 2-undecanone and 2-tridecanone. Soil amended with yard waste compost enhanced 2-undecanone and 2-tridecanone production by 31 and 59%, respectively. Soil amended with chicken manure enhanced 2-undecanone and 2-tridecanone production by 28 and 43%, respectively. Concentrations of 2-undecanone and 2-tridecanone were lowest in onion bulbs of plants grown in sewage sludge and unamended soil, respectively. The increased concentrations of 2-undecanone and 2-tridecanone in onion bulbs may provide a protective character against insect and spider mite attack in field grown onions"
Keywords:		Animals Chickens Ketones/*analysis/metabolism Manure/analysis Onions/*chemistry/growth & development/metabolism Refuse Disposal Sewage/analysis;
Notes:		"MedlineAntonious, George F eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2013/02/05 J Environ Sci Health B. 2013; 48(4):302-7. doi: 10.1080/03601234.2013.743790"