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The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution

Background: Bacteria are readily nourished in airtight environments with high humidity, such as storage cabinets, clothing closets, and corners, where ventilation is normally low and humidity is high. Objectives: We characterized the role of humidity and ventilation in bacterial growth and genus dis...

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Detalles Bibliográficos
Autores principales: Qiu, Yujia, Zhou, Yan, Chang, Yanfen, Liang, Xinyue, Zhang, Hui, Lin, Xiaorui, Qing, Ke, Zhou, Xiaojie, Luo, Ziqiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9691097/
https://www.ncbi.nlm.nih.gov/pubmed/36430064
http://dx.doi.org/10.3390/ijerph192215345
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author Qiu, Yujia
Zhou, Yan
Chang, Yanfen
Liang, Xinyue
Zhang, Hui
Lin, Xiaorui
Qing, Ke
Zhou, Xiaojie
Luo, Ziqiang
author_facet Qiu, Yujia
Zhou, Yan
Chang, Yanfen
Liang, Xinyue
Zhang, Hui
Lin, Xiaorui
Qing, Ke
Zhou, Xiaojie
Luo, Ziqiang
author_sort Qiu, Yujia
collection PubMed
description Background: Bacteria are readily nourished in airtight environments with high humidity, such as storage cabinets, clothing closets, and corners, where ventilation is normally low and humidity is high. Objectives: We characterized the role of humidity and ventilation in bacterial growth and genus distribution at different temperatures (26 °C and 34 °C). Methods: Fresh pork, which was used as the substrate for bacterial culture, was placed in storage cabinets. Bacterial growth and genera distribution on the surface of pork placed in a storage cabinet under different temperatures (26 °C and 34 °C); relative humidity levels (RH: 50%, 70%, 90%); and ventilation conditions (no ventilation and low, medium, and high levels of ventilation) were assessed by rDNA sequencing. Results: Increased ventilation and reduced humidity significantly decreased bacterial growth at 26 °C and 34 °C. The contribution of increased ventilation to the reduction in bacterial growth exceeded that of decreased humidity. Ventilation had the greatest effect on reducing bacterial growth compared to the unventilated conditions at 70% RH. At 34 °C, medium and high levels of ventilation were required to reduce bacterial growth. High temperatures greatly increased bacterial growth, but ventilation could reduce the degree of this increase.
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spelling pubmed-96910972022-11-25 The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution Qiu, Yujia Zhou, Yan Chang, Yanfen Liang, Xinyue Zhang, Hui Lin, Xiaorui Qing, Ke Zhou, Xiaojie Luo, Ziqiang Int J Environ Res Public Health Article Background: Bacteria are readily nourished in airtight environments with high humidity, such as storage cabinets, clothing closets, and corners, where ventilation is normally low and humidity is high. Objectives: We characterized the role of humidity and ventilation in bacterial growth and genus distribution at different temperatures (26 °C and 34 °C). Methods: Fresh pork, which was used as the substrate for bacterial culture, was placed in storage cabinets. Bacterial growth and genera distribution on the surface of pork placed in a storage cabinet under different temperatures (26 °C and 34 °C); relative humidity levels (RH: 50%, 70%, 90%); and ventilation conditions (no ventilation and low, medium, and high levels of ventilation) were assessed by rDNA sequencing. Results: Increased ventilation and reduced humidity significantly decreased bacterial growth at 26 °C and 34 °C. The contribution of increased ventilation to the reduction in bacterial growth exceeded that of decreased humidity. Ventilation had the greatest effect on reducing bacterial growth compared to the unventilated conditions at 70% RH. At 34 °C, medium and high levels of ventilation were required to reduce bacterial growth. High temperatures greatly increased bacterial growth, but ventilation could reduce the degree of this increase. MDPI 2022-11-20 /pmc/articles/PMC9691097/ /pubmed/36430064 http://dx.doi.org/10.3390/ijerph192215345 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Qiu, Yujia
Zhou, Yan
Chang, Yanfen
Liang, Xinyue
Zhang, Hui
Lin, Xiaorui
Qing, Ke
Zhou, Xiaojie
Luo, Ziqiang
The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title_full The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title_fullStr The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title_full_unstemmed The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title_short The Effects of Ventilation, Humidity, and Temperature on Bacterial Growth and Bacterial Genera Distribution
title_sort effects of ventilation, humidity, and temperature on bacterial growth and bacterial genera distribution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9691097/
https://www.ncbi.nlm.nih.gov/pubmed/36430064
http://dx.doi.org/10.3390/ijerph192215345
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