title: Inhibition of bacterial and filamentous fungal growth in high moisture, nonsterile corn with intermittent pumping of trans-2-hexenal vapor.
abstract: Trans-2-hexenal (T2H), a plant-produced aldehyde, was intermittently pumped over a 7 d period into a small, bench top model of stored corn (nonsterile, moisture content about 23%). Naturally occurring bacteria and fungi, including added Aspergillus flavus, grew rapidly on corn not treated with T2H vapor. However, intermittently pumped T2H (30 min per 2 h or 30 min per 12 h) significantly reduced bacterial and fungal viable populations, with nearly 100% fungal viability loss observed after either (1) one day of pumping at the 30 min per 2 h rate or (2) pumping cycles of 30 min per 12 h period over the initial 48 to 72 h of incubation. Data suggest that short-term intermittent fumigation of stored corn with T2H could prevent growth of bacteria and mycotoxigenic fungi such as A. flavus.
authors.affiliation: Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA. anthony.delucca@ars.usda.gov
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: De Lucca
authors.forename: Carol H
authors.initials: CH
authors.lastname: Carter-Wientjes
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Boué
authors.forename: Mary P
authors.initials: MP
authors.lastname: Lovisa
authors.forename: Deepak
authors.initials: D
authors.lastname: Bhatnagar
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D001231:Aspergillus flavus / Q000187:drug effects* / Q000254:growth & development; D001419:Bacteria / Q000187:drug effects* / Q000254:growth & development; D015169:Colony Count, Microbial; D005506:Food Contamination / Q000517:prevention & control*; D005516:Food Microbiology; D008401:Gas Chromatography-Mass Spectrometry; D055549:Volatile Organic Compounds / Q000737:chemistry; D003313:Zea mays / Q000382:microbiology*
chemical_list: D000447:Aldehydes; D055549:Volatile Organic Compounds; C051750:2-hexenal
keywords: antibacterial; antifungal; corn; fumigation; trans-2-hexenal