2023-05-16 デラウェア大学 (UD)
◆彼らは植物の光学イメージングを使用し、病原体の存在を3〜6時間で判定することができます。これにより、食品の安全性と公衆衛生を向上させることができます。また、彼らは垂直農業においてもこの技術を活用し、より持続可能な農業を実現するための一歩として利用する計画です。
◆現在の方法に比べて迅速で非侵襲的なこの技術は、将来的に商業化される予定です。さらに、異なる微生物の識別も可能になるかどうかを研究しています。
<関連情報>
- https://www.udel.edu/udaily/2023/may/food-safety-disease-testing-plant-science/
- https://onlinelibrary.wiley.com/doi/10.1111/jfs.13056
マルチスペクトルイメージングを用いた深紫外蛍光センシングにより、葉緑体上の食品媒介病原体を検出・監視する。 Deep ultraviolet fluorescence sensing with multispectral imaging to detect and monitor food-borne pathogens on the leafy green phyllosphere
Nick Johnson, Kalmia Kniel, Harsh Bais, Anthony Ragone
Journal of Food Safety Published: 16 April 2023
DOI:https://doi.org/10.1111/jfs.13056
Abstract
Demand for sustainable and safe raw agricultural commodities is growing rapidly worldwide. Reducing the risk of foodborne illnesses associated with fresh produce is a task which the industry and academic researchers have been struggling with for many years. There is an immediate need to devise a non-invasive optical detection system to monitor the food-borne pathogens on the leaf surface. The detection of foodborne pathogens on leafy produce is performed often too late because of the invasive techniques used to evaluate the pathogen colonization. Use of deep ultraviolet fluorescence (DUVF) sensing and visible–near infrared multispectral imaging (MSI) has previously been used to monitor plant interactions against both biotic and abiotic stress regimes. Using the patho-system that we developed to monitor Salmonella sp. and Listeria sp. ingression in leafy greens such as lettuce/spinach, we show that plant response in terms of fluctuation of chlorophyll pigments post-Salmonella/Listeria treatment is rapid. We also show that the mode of application of Salmonella/Listeria via foliar or root supplementation changes the ChlA response. Our data also reveals that the plant sentinel response in terms of early photosynthetic response may be critical to detect food-borne pathogens on leafy greens. MSI demonstrated that plant stress was detectable and proportional to the bacterial inoculation rate on plants. Our research may lead to implementation of better strategies and technology to increase yield and reduce risks associated with contamination of foodborne bacterial pathogens.
