Inhibition of Bacterial and Filamentous Fungal Growth in High Moisture,Nonsterile Corn with Intermittent Pumping of Trans‐2‐Hexenal Vapor |
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Authors: | Anthony J De Lucca Carol H Carter‐Wientjes Stephen M Boué Mary P Lovisa Deepak Bhatnagar |
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Affiliation: | Southern Regional Research Center, Agricultural Research Service, United States Dept. of Agriculture, , New Orleans, LA 70124 U.S.A. |
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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. |
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Keywords: | antibacterial antifungal corn fumigation trans‐2‐hexenal |
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