Indoor microbial contamination through water mist aerosol at public restaurants

In Malaysia and many other Asian countries, countless number of restaurants are made of open or semi-open air buildings. These restaurants are commonly located beside roads, factories, and construction sites. The foods are often exposed to the air, increasing their tendency to be contaminated due to...

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Main Authors:	Z, Maryam, M. R., Rafidah Azira, Nordin, Noor Faizul Hadry, A., Norhidayah, Mohd. Aris, Mohd Shukri
Format:	Article
Language:	English
Published:	Universiti Teknologi Malaysia 2015
Online Access:	http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/1/6706-18436-1-SM.pdf

id	iium-47422
recordtype	eprints
spelling	iium-474222018-05-23T02:07:23Z http://irep.iium.edu.my/47422/ Indoor microbial contamination through water mist aerosol at public restaurants Z, Maryam M. R., Rafidah Azira Nordin, Noor Faizul Hadry A., Norhidayah Mohd. Aris, Mohd Shukri In Malaysia and many other Asian countries, countless number of restaurants are made of open or semi-open air buildings. These restaurants are commonly located beside roads, factories, and construction sites. The foods are often exposed to the air, increasing their tendency to be contaminated due to poor indoor and outdoor air quality. There are very few studies characterising and comparing the levels of indoor air pollutants in restaurants. Other than that, scarce data are available on dining establishments especially in the presence and absence of water mist application system. Due to these reasons, no best practices or guidelines can be developed. Hence, this present study aimed (1) to assess and compare the physical indoor air quality (IAQ) characteristics and airborne pollutants between different types of restaurant settings; (2) to identify microbes isolated in the presence and absence of water mist system; (3) to analyse bacterial counting within and between the different restaurant settings; and (4) to determine the relationship between physical IAQ characteristics and airborne microbial contaminants. Instruments known as Dustmate and VelociCalc® Multi-Function Ventilation Meter 9565 were used to measure the physical IAQ characteristics and airborne particulate matters. On the other hand, Surface Air System Indoor Air Quality (SAS IAQ) was use to seize the microbial contaminants. All the data obtained were compared with the standard reference known as the Industrial Code of Practice on Indoor Air Quality (2010) constructed by the Department of Occupational Safety and Health (DOSH). This study later indicated that the level of indoor PM10 concentrations was influenced by changes of physical IAQ parameters at the two restaurants investigated. As the PM10 increased, the colony forming unit (CFU) counting also increased. Although microbial contaminations were found during both periods of exposure (i.e., in the presence and absence of water mist) at both restaurants, significant relationship between the parameters measured cannot be determined. The bacterial species obtained during the presence and absence of water mist application system for both of the restaurants were also identified. Gemella morbillorum was found as the most dominant species, followed by other species such as Aerococcus viridans, Globicatella sanguinis, Leuconostoc spp., and Proteus penneri. Universiti Teknologi Malaysia 2015 Article PeerReviewed application/pdf en http://irep.iium.edu.my/47422/1/6706-18436-1-SM.pdf Z, Maryam and M. R., Rafidah Azira and Nordin, Noor Faizul Hadry and A., Norhidayah and Mohd. Aris, Mohd Shukri (2015) Indoor microbial contamination through water mist aerosol at public restaurants. Jurnal Teknologi, 77 (24). pp. 45-50. ISSN 2180–3722 (O), 0127–9696 (P) http://www.jurnalteknologi.utm.my/index.php/jurnalteknologi/article/view/6706 http://dx.doi.org/10.11113/jt.v77.6706
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
description	In Malaysia and many other Asian countries, countless number of restaurants are made of open or semi-open air buildings. These restaurants are commonly located beside roads, factories, and construction sites. The foods are often exposed to the air, increasing their tendency to be contaminated due to poor indoor and outdoor air quality. There are very few studies characterising and comparing the levels of indoor air pollutants in restaurants. Other than that, scarce data are available on dining establishments especially in the presence and absence of water mist application system. Due to these reasons, no best practices or guidelines can be developed. Hence, this present study aimed (1) to assess and compare the physical indoor air quality (IAQ) characteristics and airborne pollutants between different types of restaurant settings; (2) to identify microbes isolated in the presence and absence of water mist system; (3) to analyse bacterial counting within and between the different restaurant settings; and (4) to determine the relationship between physical IAQ characteristics and airborne microbial contaminants. Instruments known as Dustmate and VelociCalc® Multi-Function Ventilation Meter 9565 were used to measure the physical IAQ characteristics and airborne particulate matters. On the other hand, Surface Air System Indoor Air Quality (SAS IAQ) was use to seize the microbial contaminants. All the data obtained were compared with the standard reference known as the Industrial Code of Practice on Indoor Air Quality (2010) constructed by the Department of Occupational Safety and Health (DOSH). This study later indicated that the level of indoor PM10 concentrations was influenced by changes of physical IAQ parameters at the two restaurants investigated. As the PM10 increased, the colony forming unit (CFU) counting also increased. Although microbial contaminations were found during both periods of exposure (i.e., in the presence and absence of water mist) at both restaurants, significant relationship between the parameters measured cannot be determined. The bacterial species obtained during the presence and absence of water mist application system for both of the restaurants were also identified. Gemella morbillorum was found as the most dominant species, followed by other species such as Aerococcus viridans, Globicatella sanguinis, Leuconostoc spp., and Proteus penneri.
format	Article
author	Z, Maryam M. R., Rafidah Azira Nordin, Noor Faizul Hadry A., Norhidayah Mohd. Aris, Mohd Shukri
spellingShingle	Z, Maryam M. R., Rafidah Azira Nordin, Noor Faizul Hadry A., Norhidayah Mohd. Aris, Mohd Shukri Indoor microbial contamination through water mist aerosol at public restaurants
author_facet	Z, Maryam M. R., Rafidah Azira Nordin, Noor Faizul Hadry A., Norhidayah Mohd. Aris, Mohd Shukri
author_sort	Z, Maryam
title	Indoor microbial contamination through water mist aerosol at public restaurants
title_short	Indoor microbial contamination through water mist aerosol at public restaurants
title_full	Indoor microbial contamination through water mist aerosol at public restaurants
title_fullStr	Indoor microbial contamination through water mist aerosol at public restaurants
title_full_unstemmed	Indoor microbial contamination through water mist aerosol at public restaurants
title_sort	indoor microbial contamination through water mist aerosol at public restaurants
publisher	Universiti Teknologi Malaysia
publishDate	2015
url	http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/ http://irep.iium.edu.my/47422/1/6706-18436-1-SM.pdf
first_indexed	2023-09-18T21:07:29Z
last_indexed	2023-09-18T21:07:29Z
_version_	1777411030652026880

Indoor microbial contamination through water mist aerosol at public restaurants

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