Farm use of calcium hydroxide as an effective barrier against pathogens

Abstract Livestock farming is affected by the occurrence of infectious diseases, but outbreaks can be prevented by proper sanitary control measures. Calcium hydroxide (Ca(OH)2), commonly called slaked lime, powder is traditionally used as a disinfectant to prevent infectious diseases in livestock. S...

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Autores principales:	Shinji Matsuzaki, Kento Azuma, Xuguang Lin, Masahiro Kuragano, Koji Uwai, Shinya Yamanaka, Kiyotaka Tokuraku
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9cb4347a6c7e46268b5ea0074e2ea9eb
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spelling	oai:doaj.org-article:9cb4347a6c7e46268b5ea0074e2ea9eb2021-12-02T15:51:16ZFarm use of calcium hydroxide as an effective barrier against pathogens10.1038/s41598-021-86796-w2045-2322https://doaj.org/article/9cb4347a6c7e46268b5ea0074e2ea9eb2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86796-whttps://doaj.org/toc/2045-2322Abstract Livestock farming is affected by the occurrence of infectious diseases, but outbreaks can be prevented by proper sanitary control measures. Calcium hydroxide (Ca(OH)2), commonly called slaked lime, powder is traditionally used as a disinfectant to prevent infectious diseases in livestock. Since Ca(OH)2 can inactivate a wide variety of pathogens, has a small environmental impact, does not require a disinfection tank (i.e., can be spread directly on the ground) and is produced inexpensively worldwide, it is used for the prevention of epidemics on farms worldwide. Water is essential for the strong alkalinity that underlies its disinfecting effect, but it is unknown how much water is required under field conditions. In addition, Ca(OH)2 reacts with carbon dioxide in the environment, reducing its pH, but it is unclear how long its degradation takes under actual field use. Thus, we measured the water adsorption ability of Ca(OH)2-based disinfectants and its relation to disinfectant activity, as assessed by colony counts and live/dead staining and observation. We found that 15–20% (w/w) water in Ca(OH)2 was necessary for disinfection to occur in practice. Moreover, we found that the pH of Ca(OH)2 decreased within about two weeks to one month under actual use in practical conditions and lost its ability to disinfect. We further showed that granules prepared from Ca(OH)2 and zeolite maintained high alkalinity more than twice as long as calcium powder. These findings will help to establish a suitable method of applying Ca(OH)2 to protect farms from infectious diseases.Shinji MatsuzakiKento AzumaXuguang LinMasahiro KuraganoKoji UwaiShinya YamanakaKiyotaka TokurakuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shinji Matsuzaki Kento Azuma Xuguang Lin Masahiro Kuragano Koji Uwai Shinya Yamanaka Kiyotaka Tokuraku Farm use of calcium hydroxide as an effective barrier against pathogens
description	Abstract Livestock farming is affected by the occurrence of infectious diseases, but outbreaks can be prevented by proper sanitary control measures. Calcium hydroxide (Ca(OH)2), commonly called slaked lime, powder is traditionally used as a disinfectant to prevent infectious diseases in livestock. Since Ca(OH)2 can inactivate a wide variety of pathogens, has a small environmental impact, does not require a disinfection tank (i.e., can be spread directly on the ground) and is produced inexpensively worldwide, it is used for the prevention of epidemics on farms worldwide. Water is essential for the strong alkalinity that underlies its disinfecting effect, but it is unknown how much water is required under field conditions. In addition, Ca(OH)2 reacts with carbon dioxide in the environment, reducing its pH, but it is unclear how long its degradation takes under actual field use. Thus, we measured the water adsorption ability of Ca(OH)2-based disinfectants and its relation to disinfectant activity, as assessed by colony counts and live/dead staining and observation. We found that 15–20% (w/w) water in Ca(OH)2 was necessary for disinfection to occur in practice. Moreover, we found that the pH of Ca(OH)2 decreased within about two weeks to one month under actual use in practical conditions and lost its ability to disinfect. We further showed that granules prepared from Ca(OH)2 and zeolite maintained high alkalinity more than twice as long as calcium powder. These findings will help to establish a suitable method of applying Ca(OH)2 to protect farms from infectious diseases.
format	article
author	Shinji Matsuzaki Kento Azuma Xuguang Lin Masahiro Kuragano Koji Uwai Shinya Yamanaka Kiyotaka Tokuraku
author_facet	Shinji Matsuzaki Kento Azuma Xuguang Lin Masahiro Kuragano Koji Uwai Shinya Yamanaka Kiyotaka Tokuraku
author_sort	Shinji Matsuzaki
title	Farm use of calcium hydroxide as an effective barrier against pathogens
title_short	Farm use of calcium hydroxide as an effective barrier against pathogens
title_full	Farm use of calcium hydroxide as an effective barrier against pathogens
title_fullStr	Farm use of calcium hydroxide as an effective barrier against pathogens
title_full_unstemmed	Farm use of calcium hydroxide as an effective barrier against pathogens
title_sort	farm use of calcium hydroxide as an effective barrier against pathogens
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9cb4347a6c7e46268b5ea0074e2ea9eb
work_keys_str_mv	AT shinjimatsuzaki farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT kentoazuma farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT xuguanglin farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT masahirokuragano farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT kojiuwai farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT shinyayamanaka farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens AT kiyotakatokuraku farmuseofcalciumhydroxideasaneffectivebarrieragainstpathogens
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Farm use of calcium hydroxide as an effective barrier against pathogens

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