Investigation of Routes of Salmonella Contamination Via Soils and the Use of Mulch for Contamination Control during Lettuce Cultivation

• Honjoh Ken-ichi

  Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University

• Mishima Tomoko

  Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences

• Kido Nozomi

  Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences

• Shimamoto Misako

  Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences

• Miyamoto Takahisa

  Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University

書誌事項

タイトル別名

• Investigation of Routes of <i>Salmonella</i> Contamination Via Soils and the Use of Mulch for Contamination Control during Lettuce Cultivation

抄録

Foodborne illnesses associated with the consumption of fresh produce such as raw vegetables have become a major health concern worldwide in recent years. In the present study, we investigated the possible routes of Salmonella contamination in leafy lettuce via soil during cultivation. After 10-week cultivation of lettuce plants in soils inoculated with S. Enteritidis expressing green fluorescent protein (SE-EGFP), the bacterium was detected in soil inoculated with >10⁴ cfu/g and from most lettuce leaves cultivated in soils inoculated with >4.4 × 10⁷ cfu/g. As Salmonella was not detected in intact lettuce leaves or lettuce leaves with root injury cultivated in highly contaminated soils and after surface disinfection, the lettuce plants were not considered to internalize the bacterium. Overhead irrigation led to the contamination of one in 10 lettuce plants; however, all sets of three leaves of the plant were contaminated (>110 MPN/g). In an effort to prevent Salmonella contamination from soils, we investigated the effects of mulch on contamination levels during cultivation. Mulch effectively reduced Salmonella contamination levels of lettuce plants cultivated in highly contaminated soils.

収録刊行物

• Food Science and Technology Research

  Food Science and Technology Research 20 (5), 961-969, 2014

  公益社団法人 日本食品科学工学会

キーワード

• contamination
• lettuce
• <i>Salmonella</i>
• soil
• mulch

詳細情報

• CRID: 1390282679435165824
• NII論文ID: 130004704875
• DOI: 10.3136/fstr.20.961
• ISSN: 18813984
• ISSN: 13446606
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可