Air‐cleaning System Effectiveness for Control of Airborne Microbes in a Meat‐processing Plant

Cj, Cundith; Kerth, C. R.; Wr, Jones; Ta, McCaskey; Dl, Kuhlers

doi:10.1111/j.1365-2621.2002.tb09471.x

Cited by 18 publications

(16 citation statements)

References 21 publications

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“…The difference in sensitivity of these bacteria to ROS could be attributed to differences in cell wall structure of lactic acid bacteria (Gram Positive) and Gram negative bacteria. Similar to our results, germicidal air cleaning console units were unable to reduce airborne bacteria or molds below 0.5 log CFU/m 3 [13]. The use of electrostatic space charge system (ESCS) to reduce airborne dust in broiler breeder facility resulted in a 64% reduction in Gramnegative bacteria [14].…”

Section: Resultssupporting

confidence: 88%

“…The airborne microbes are a potential source of microbiological contamination in meat products. The present study showed that ROS exposure produced 2-3.5 log reduction in airborne bacteria within 24 h. These reductions are superior to the reduction of airborne bacteria obtained using germicidal air cleaning console units [13] and electrostatic precipitation [10]. While Gram-negative bacterial populations were reduced to non-detectable levels after ROS exposure, total bacterial populations remained *2 log CFU/m 3 .…”

Section: Resultsmentioning

confidence: 63%

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Evaluation of reactive oxygen species generating AirOcare system for reducing airborne microbial populations in a meat processing plant

Patel

2009

Sens. & Instrumen. Food Qual.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 63%

Evaluation of reactive oxygen species generating AirOcare system for reducing airborne microbial populations in a meat processing plant

Patel

2009

Sens. & Instrumen. Food Qual.

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“…The sampling points used in this study are also areas with an intensive air movement and, due to the operation of ventilators, fans and air-conditioners, the amounts of microorganisms colonizing the medium varied. This observation confirms the opinion that the sedimentation method should be selected to assess air contamination in locations with limited air movement (Cundith et al, 2002).…”

Section: Analysis Of Air Quality In Selected Areas Of a Poultry Procesupporting

confidence: 73%

Analysis of Air Quality in Selected Areas of a Poultry Processing Plant With the Use of a Microbiological Air Sampler

Konieczny

Cegielska‐Radziejewska

Mroczek

et al. 2016

Rev. Bras. Cienc. Avic.

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Poultry processing plant, microbiological air quality, impaction technique. ABSTRACTThe aim of the study was to analyze the air quality in selected production facilities specified as the so-called "high-risk zones". Air samples were analyzed using either the sedimentation or the impaction methods. The impaction method showed the applicability of the air sampler in in-situ measurements. An increase in the numbers of aerobic bacteria was observed in most air sample collection sites as the duration of the production time increased. At the three successive dates, it amounted to 163 cfu/m 3 , 205 cfu/m 3 , and 324 cfu/m 3 , respectively. Such dependence was not observed by the of sedimentation method. It was stated that the impaction technique is better to precisely determine numbers of bacteria, yeast, and molds in the air of poultry processing areas. Analyses showed a high level of microbial air contamination in the examined production areas in relation to the guidelines applied in the assessment of indoor air contamination. Based on the recorded results, it was recommended to undertake immediate corrective actions, consisting in the replacement of filters in the refrigeration and air conditioning equipment, as well as to provide comprehensive training for the employees working in the selected facilities.

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“…UV radiation at a 254-nm wavelength has been used as an efficient and cost-effective means of disinfecting surfaces (1,4,15,16,17), building air (3,8,13), and drinking water supplies (5). The most reliable method for testing the efficacy of UV disinfection equipment is biodosimetry, the use of a test organism to measure the biologically effective UV dose (2).…”

mentioning

confidence: 99%

UV Resistance of Bacillus anthracis Spores Revisited: Validation of Bacillus subtilis Spores as UV Surrogates for Spores of B. anthracis Sterne

Nicholson

Galeano

2003

Appl Environ Microbiol

137

111

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Recent bioterrorism concerns have prompted renewed efforts towards understanding the biology of bacterial spore resistance to radiation with a special emphasis on the spores of Bacillus anthracis. A review of the literature revealed that B. anthracis Sterne spores may be three to four times more resistant to 254-nmwavelength UV than are spores of commonly used indicator strains of Bacillus subtilis. To test this notion, B. anthracis Sterne spores were purified and their UV inactivation kinetics were determined in parallel with those of the spores of two indicator strains of B. subtilis, strains WN624 and ATCC 6633. When prepared and assayed under identical conditions, the spores of all three strains exhibited essentially identical UV inactivation kinetics. The data indicate that standard UV treatments that are effective against B. subtilis spores are likely also sufficient to inactivate B. anthracis spores and that the spores of standard B. subtilis strains could reliably be used as a biodosimetry model for the UV inactivation of B. anthracis spores.The October 2001 bioterrorist attack with Bacillus anthracis spores has sparked renewed interest in studying methods of bacterial spore inactivation and the mechanisms by which spores resist the lethal effects of various disinfection treatments. UV radiation at a 254-nm wavelength has been used as an efficient and cost-effective means of disinfecting surfaces (1,4,15,16,17), building air (3, 8, 13), and drinking water supplies (5). The most reliable method for testing the efficacy of UV disinfection equipment is biodosimetry, the use of a test organism to measure the biologically effective UV dose (2). Commonly used test organisms for UV biodosimetry studies are bacterial spores, usually spores of Bacillus subtilis, due to their high degree of UV resistance, reproducible inactivation response, and ease of use (reviewed in references 9 and 11). In particular, exhaustive testing of spores of the B. subtilis strain ATCC 6633 has resulted in this strain serving as the current European biodosimetry standard for 254-nm UV disinfection of drinking water (5).Semilogarithmic plots of spore inactivation versus UV fluence (dose) produce a characteristic curve, consisting of a shoulder at low UV doses, followed by a curve reflecting exponential inactivation at higher UV doses (Fig. 1). Two parameters often used to describe spore resistance to UV are (i) the UV dose lethal for 90% of the population (LD 90 ) and (ii) the decimal reduction value (D value), defined as the UV dose which reduces spore viability by a factor of 10, measured from the exponential portion of the inactivation curve (6, 11). For example, from the published data of Hoyer (5) (Fig. 1), it can be calculated that spores of B. subtilis ATCC 6633 exhibit an LD 90 and a D value of 260 and 120 J/m 2 , respectively (Table 1). In stark contrast to the extensively characterized UV inactivation response of B. subtilis spores, much less work has been performed to characterize the UV inactivation kinetics of B. anthracis ...

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Air‐cleaning System Effectiveness for Control of Airborne Microbes in a Meat‐processing Plant

Cited by 18 publications

References 21 publications

Evaluation of reactive oxygen species generating AirOcare system for reducing airborne microbial populations in a meat processing plant

Evaluation of reactive oxygen species generating AirOcare system for reducing airborne microbial populations in a meat processing plant

Analysis of Air Quality in Selected Areas of a Poultry Processing Plant With the Use of a Microbiological Air Sampler

UV Resistance of Bacillus anthracis Spores Revisited: Validation of Bacillus subtilis Spores as UV Surrogates for Spores of B. anthracis Sterne

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