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United States Department of Agriculture

Agricultural Research Service

Research Project: BIOLOGICAL CONTROL OF INSECTS AND MICROORGANISMS TO PREVENT MYCOTOXIN CONTAMINATION

Location: Foodborne Toxin Detection and Prevention

Title: Volatile Emission of Mechanically Damaged Almonds

Authors
item Beck, John
item Merrill, Glory
item Higbee, Bradley - PARAMOUNT FARMING CO.

Research conducted cooperatively with:
item Paramount Farming Company, Llc

Submitted to: American Society of Pharmacognosy
Publication Type: Abstract Only
Publication Acceptance Date: May 26, 2007
Publication Date: July 14, 2007
Citation: Beck, J.J., Merrill, G.B., Higbee, B.S. 2007. Volatile Emission of Mechanically Damaged Almonds. American Society of Pharmacognosy.

Interpretive Summary: Mature almonds from the Monterey variety were evaluated for their volatile composition after mechanical damage and compared to the volatile composition of the corresponding undamaged almonds. Volatiles were collected on the absorbent Tenax, desorbed with the organic solvent diethyl ether, and identified via gas chromatogram/mass spectral detector analyses. Volatile emission unique to the damaged tree nuts included volatile organic compounds 3-pentanol and two isomers of the spiroketal chalcogran. Volatiles that increased in relative amounts after damage include ethyl 2-methyl butanoate, ethyl tiglate, and 1-octene-3-ol.

Technical Abstract: Mature almonds from the Monterey variety were evaluated for their volatile composition after mechanical damage and compared to the volatile composition of the corresponding undamaged almonds. Volatiles were collected on Tenax, desorbed with diethyl ether, and identified via GC-MS analyses. Volatile emission unique to the damaged tree nuts included 3-pentanol and two isomers of the spiroketal chalcogran. Volatiles that increased in relative amounts after damage include ethyl 2-methyl butanoate, ethyl tiglate, and 1-octene-3-ol.

Last Modified: 8/30/2014
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