ID | 112233 |
Title Alternative | UVA-LEDを用いた水耕栽培養液殺菌
UVA-LED disinfect hydroponic solution
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Author |
Tsunedomi, Akari
Tokushima University
Miyawaki, Katsuyuki
University of Tokushima
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Masamura, Akinori
CKD corporation
Nakahashi, Mutsumi
University of Tokushima
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Mawatari, Kazuaki
Tokushima University
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Uebanso, Takashi
Tokushima University
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Kinouchi, Yousuke
University of Tokushima
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Akutagawa, Masatake
University of Tokushima
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Emoto, Takahiro
University of Tokushima
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Keywords | ultraviolet A light emitting diode
disinfection
hydroponic nutrient solutions
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Content Type |
Thesis or Dissertation
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Description | The number of plant factories in which crops are cultivated in an artificial environment has been increasing every year. In cultivation techniques involving hydroponics, plants are supplied with a circulating nutrient solution, which can become contaminated by pathogens that can propagate and spread throughout plant factories. Therefore, strategies to disinfect hydroponic nutrient solutions are needed. In this study, we developed a new disinfection device equipped with an ultraviolet A (UVA) light emitting diode (LED) that can be used to disinfect hydroponic nutrient solutions in plant factories. We first evaluated the basic disinfection capability of the device and then estimated its bactericidal effect in a small scale model system. The log survival ratio was related to UVA irradiation fluence and the volume of nutrient solution. From the assay results, we devised a kinetics equation to describe the relationship between nutrient solution volume, log survival ratio, and UVA fluence. Together our results show that UVA irradiation could be used to disinfect hydroponic nutrient solutions, and the derived kinetics equations can be used to determine optimal conditions, such as nutrient solution volume, UVA irradiation, and killing activity, to develop devices that disinfect hydroponic nutrient solutions.
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Journal Title |
The Journal of Medical Investigation
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ISSN | 13496867
13431420
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NCID | AA12022913
AA11166929
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Publisher | Faculty of Medicine Tokushima University
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Volume | 65
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Issue | 3-4
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Start Page | 171
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End Page | 176
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Sort Key | 171
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Published Date | 2018-08
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Remark | 内容要旨・審査要旨・論文本文の公開
本論文は,著者Akari Tsunedomiの学位論文として提出され,学位審査・授与の対象となっている。 |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
eng
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TextVersion |
ETD
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MEXT report number | 甲第3149号
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Diploma Number | 甲栄第258号
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Granted Date | 2018-03-23
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Degree Name |
Doctor of Nutritional Science
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Grantor |
Tokushima University
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departments |
Bioscience and Bioindustry
Medical Sciences
Science and Technology
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