Relevant bibliographies by topics / Microbiological indicator

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Academic literature on the topic 'Microbiological indicator'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Microbiological indicator"

1

Mendes, B., P. Urbano, C. Alves, J. Morais, N. Lapa, and J. S. Oliveira. "Fungi as environmental microbiological indicators." Water Science and Technology 38, no. 12 (1998): 155–62. http://dx.doi.org/10.2166/wst.1998.0529.

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An evaluation of the mycological quality of the sand beaches of the Lisboa and Vale do Tejo coastal area in Portugal was undertaken in May-October 1994. The keratinolytic fungi, yeasts, potential pathogenic and allergic and/or environmental saprophytic fungi were analysed. The results for the yeast Candida were evaluated according to the “Proposed Guidelines for the Microbiological Quality of Sand”. The data showed good/satisfactory quality of the sand beaches for the genus Candida. The results indicate that the allergic and/or environmental saprophytic fungi were the most common in sand beaches. The fungi Scopulariopsis and the yeast Candida could be used as specific indicator organisms of sand beaches quality. A new quality objective is introduced that will contribute to improve the sand beaches quality.
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Domnina, Yu M., V. V. Suslov, N. E. Grammatikova, and S. A. Kedik. "Microbiological Estimation of Nasal Spray Containing Naltrexone Hydrochloride." Drug development & registration 9, no. 4 (2020): 116–20. http://dx.doi.org/10.33380/2305-2066-2020-9-4-116-120.

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Introduction. In order to standardize the quality indicators during the expected shelf life of the developed drug naltrexone hydrochloride in the form of a nasal spray containing a high concentration of poloxamer and benzalkonium chloride as a preservative, a microbiological study was carried out. The possibility of using the membrane filtration method for testing prototypes recommended by the State Pharmacopoeia XIV.Aim. Study and selection of test conditions for the «microbiological purity» indicator of nasal spray samples containing naltrexone hydrochloride.Materials and methods. As an object of research, a naltrexone hydrochloride nasal spray was used. When analyzing the microbiological purity, the membrane filtration method recommended in the State Pharmacopoeia XIV.Results and discussion. As part of the study, it was found that the samples of the drug meet the requirements for a microbiological indicator for drugs of category 2. Testing the suitability of the method for samples of the dosage form showed that the antimicrobial effect of the drug was completely removed by washing the filter, which was proved by inoculation of indicator test microorganisms, the quantitative and qualitative nature of growth, which did not differ from the control without the drug.Conclusion. As a result of the studies carried out, the optimal test conditions for the «Microbiological purity» indicator for the nasal spray containing naltrexone hydrochloride were selected and substantiated.
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Chramostová, J., O. Hanuš, M. Klimešová, et al. "Proteolysis in raw milk in relation to microbiological indicators." Czech Journal of Food Sciences 34, No. 4 (2016): 306–12. http://dx.doi.org/10.17221/64/2016-cjfs.

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Proteolysis in raw milk is a crucial parameter indicating both cow’s mastitis and the technological problems or spoilage risk of final products. However, a suitable analytical method for its early detection in practice is still missing. Thus, we proposed a spectrophotometric determination of milk proteolysis equivalent (MPE). We tested this method on 104 bovine raw milk samples in relation to their somatic cell count (SCC) as an indicator of native proteolysis, and the total count of mesophilic bacteria (TCMB) and the total count of psychrotrophic bacteria (TCPB) as indicators of microbial proteolysis. Correlation coefficients between log TCMB and MPE and log TCPB and MPE were 0.3651 and 0.4152, respectively (both P < 0.001). SCC was not correlated with MPE (P > 0.05). We estimated the MPE limit indicating an incipient risk of proteolysis in the range from 0.9366 to 1.02 mmol/l. The determination of MPE seems to be a promising method applicable in the control of raw milk.
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Iman, Iman, Titik Nuryastuti, and Lucky Herawati. "Analisis laik sehat dan kualitas mikrobiologi air minum isi ulang di Majalengka." Berita Kedokteran Masyarakat 32, no. 5 (2018): 179. http://dx.doi.org/10.22146/bkm.7606.

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PurposeThe purpose of this study was to explore the relationship of feasibility analysis of health indicators with the microbiological quality of refill drinking water.MethodThe study used a descriptive design with a cross-sectional analytic approach. The dependent variable was the microbiological quality of refill drinking water. The independent variables were the following health indicators: raw water quality, equipment and processing method, operator behavior, and sanitation of depot building. ResultsThere were significant correlations between variables of health indicator, equipment and processing method with E.coli microbiological quality. There was no significant correlation between quality of raw water, behavior of the operator, and sanitation buildings with microbiological quality.ConclusionAlmost fifty percent of DAMIU refill drinking water is not qualified for microbiological quality of coliform and microbiological quality of Escheria coli. The most dominant factors affecting microbiological quality of drinking water refills are equipment and processing.
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BUCHANAN, ROBERT L., and RUTH ONI. "Use of Microbiological Indicators for Assessing Hygiene Controls for the Manufacture of Powdered Infant Formula." Journal of Food Protection 75, no. 5 (2012): 989–97. http://dx.doi.org/10.4315/0362-028x.jfp-11-532.

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Microbiological testing for various indicator microorganisms is used extensively as a means of verifying the effectiveness of efforts to ensure the microbiological quality and safety of a wide variety of foods. However, for each use of an indicator organism the underlying scientific assumptions related to the behavior of the target microorganism, the characteristics of the food matrix, the details of the food manufacturing processes, environment, and distribution system, and the methodological basis for the assay must be evaluated to determine the validity, utility, and efficacy of potential microbiological indicator tests. The recent adoption by the Codex Alimentarius Commission of microbiological criteria for powdered infant formulae and related products provides an excellent example of an evidence-based approach for the establishment of consensus microbiological criteria. The present article reviews these criteria and those of various national governments in relation to emerging principles for the evidence-based establishment of effective indicator organisms.
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Tortorello, Mary L. "Indicator Organisms for Safety and Quality—Uses and Methods for Detection: Minireview." Journal of AOAC INTERNATIONAL 86, no. 6 (2003): 1208–17. http://dx.doi.org/10.1093/jaoac/86.6.1208.

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Abstract Indicator organisms have been used for nearly a century to assess the microbiological status of water and foods. Beginning with their use in water sanitation programs, their applications have been extended over the years to other products, and they have become important components of the microbiological testing programs of both industry and regulatory agencies. Functionally, they may be viewed as safety or quality indicators. Safety indicators suggest the presence of conditions associated with increased risk of exposure to a pathogen. Quality indicators assess conditions of importance to product manufacture or consumer acceptability. This minireview summarizes the history, use, and analytical methods for the most commonly used indicator organisms, including the aerobic plate count, yeasts and molds, the coliform groups, Escherichia coli, Enterobacteriaceae, and Listeria.
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7

Alonso, M. C., L. P. C. Dionisio, A. Bosch, B. S. Pereira de Moura, E. Garcia-Rosado, and J. J. Borrego. "Microbiological quality of reclaimed water used for golf courses' irrigation." Water Science and Technology 54, no. 3 (2006): 109–17. http://dx.doi.org/10.2166/wst.2006.456.

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Microbial quality of reclaimed water used for irrigation in two golf courses located in the southern Iberian Peninsula (Spain and Portugal) was evaluated. Bacterial indicators for faecal pollution (total and faecal coliforms, Escherichia coli and enterococci) were tested by membrane filtration using appropriate selective media. In addition, somatic E. coli bacteriophages, enteric viruses (entero-, hepatitis A and rota-) and Legionella pneumophila were also analysed. The results obtained showed that all wastewater treatment processes reduced adequately the number of indicator microorganisms although a significant correlation between pathogenic and indicator microorganisms tested was not found. L. pneumophila was detected by PCR but not confirmed by culture. Survival experiments of pathogenic microorganisms in aerosols and irrigated turf are conducted to determine the health hazards for the golf practice and to propose a microbial standard for wastewater used for irrigation of golf courses.
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8

Vantarakis, A. C., A. Tsibouxi, D. Venieri, G. Komninou, M. Papapetropoulou, and A. Athanassiadou. "Evaluation of microbiological quality of coastal waters in Greece." Journal of Water and Health 3, no. 4 (2005): 371–80. http://dx.doi.org/10.2166/wh.2005.045.

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To evaluate the microbiological water quality of bathing sites along the Achaia coastline (south western Greece), a survey was conducted to determine the concentration of faecal bacterial and phage indicators as well as the presence of human viruses. Seawater samples (234) were collected from nine bathing sites on the Achaia coastline and were analysed for the presence of: total coliforms, faecal coliforms, faecal streptococci, Escherichia coli, somatic coliphages, F-RNA bacteriophages, bacteriophages infecting Bacteroides fragilis, enteroviruses, adenoviruses and hepatitis A viruses. Most of the bacteriological analysis results were in accordance with the European Union standards. In all sites, bacteriophages were detected occasionally. Enteroviruses and adenoviruses were detected in 24 samples (10.26%) and 37 samples (15.81%) respectively. No samples were positive for the presence of hepatitis A virus. The overall data indicates that bathing sites are impacted by human faecal material. Both bacterial indicators and phages have low predictive capability for the presence of human viruses in coastal waters. None of the environmental parameters analysed was strongly related to the presence of the indicator organisms and viruses. Appropriate and effective administrative measures that should be taken into account may be considered in order to improve water quality and reduce public health risk.
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9

Journal, Baghdad Science. "Microbiological Examination of some ImportedCanned and Frozen Foods." Baghdad Science Journal 5, no. 2 (2008): 237–42. http://dx.doi.org/10.21123/bsj.5.2.237-242.

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A number of juices, jams, canned foods and frozen fishes available in local markets were inspected with respect to microbial contamination. We have determined the total viable bacterial cell counts in these samples and the number of g(-) lactose fermentors as a bacterial indicator of food spoilage. The results indicated that most of the food items inspected, were contaminated with large numbers of different species of g(-) ,g(+), yeast and fungi and some were contained more than the maximum permissible number of pathogenic g(-) enteric E-coli, which render these food items unsafe for human consumption.
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10

ASAO, Tsutomu. "Strong Demand to Use Alternative Method for Food Microbiological Indicator Testing." Japanese Journal of Food Microbiology 30, no. 2 (2013): 83–88. http://dx.doi.org/10.5803/jsfm.30.83.

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