| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2015: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
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| Outline of Final Research Achievements |
This study was conducted to clarify the mechanism for contamination of vegetables by foodborne pathogens during cultivation. Salmonella Enteritidis, Escherichia coli O157 and Listeria monocytogenes survived until harvest time for 70d depending on the initial inoculum. After cultivation on these contaminated soil, tomato fruits were not contaminated with the pathogens, however, lettuce and spinach were contaminated with the pathogens depending on the level of pathogen contamination of soil. The pathogens inoculated on the surface of these vegetables disappeared in a few days, though they survived much longer on the injured surfaces. Pretreatment of the surface of vegetables with polylysine and milk serum protein decreased the secondary attachment of the pathogens onto the vegetables.
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