Document Detail

Changes in volatile compounds of gamma-irradiated fresh cilantro leaves during cold storage.
MedLine Citation:
PMID:  12475280     Owner:  NLM     Status:  MEDLINE    
Consumption of salsas and dishes containing cilantro has been linked to several recent outbreaks of food-borne illness due to contamination with human pathogens. Ionizing irradiation can effectively eliminate food-borne pathogens from various vegetables including cilantro. However, the effect of irradiation on aroma of fresh cilantro is unknown. This study was conducted to investigate the effect of irradiation on volatile compounds of fresh cilantro leaves. Fresh cilantro leaves (Coriandrum sativum L) were irradiated with 0, 1, 2, or 3 kGy gamma radiation and then stored at 3 degrees C up to 14 days. Volatile compounds were extracted using solid-phase microextraction (SPME), followed by gas chromatographic separation and mass spectra detection at 0, 3, 7, and 14 days after irradiation. Most of the volatile compounds identified were aldehydes. Decanal and (E)-2-decenal were the most abundant compounds, accounting for more than 80% of the total amount of identified compounds. The amounts of linalool, dodecanal, and (E)-2-dodecenal in irradiated samples were significantly lower than those in nonirradiated samples at day 14. However, the most abundant compounds [decanal and (E)-2-decenal] were not consistently affected by irradiation. During storage at 3 degrees C, the amount of most aldehydes peaked at 3 days and then decreased afterward. Our results suggest irradiation of fresh cilantro for safety enhancement at doses up to 3 kGy had minimal effect on volatile compounds compared with the losses that occurred during storage.
Xuetong Fan; Kimberly J B Sokorai
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  50     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2002 Dec 
Date Detail:
Created Date:  2002-12-11     Completed Date:  2003-01-17     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7622-6     Citation Subset:  IM    
Eastern Regional Research Center, Agricultural Research Service, U S Department of Agriculture, Wyndmoor, Pennsylvania 19038, USA.
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MeSH Terms
Aldehydes / analysis
Cold Temperature*
Coriandrum / chemistry*
Food Irradiation / adverse effects*
Food Preservation*
Gamma Rays
Gas Chromatography-Mass Spectrometry
Monoterpenes / analysis
Odors / analysis
Plant Extracts / chemistry
Plant Leaves / chemistry*
Time Factors
Reg. No./Substance:
0/Aldehydes; 0/Monoterpenes; 0/Plant Extracts; 112-31-2/decanaldehyde; 78-70-6/linalool

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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