Academic literature on the topic 'Microbiological hazards'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Microbiological hazards.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Microbiological hazards"

1

Roberts, C. "The Microbiological Hazards of Occupations." Journal of Clinical Pathology 43, no. 11 (November 1, 1990): 968. http://dx.doi.org/10.1136/jcp.43.11.968-a.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

CÓRDOBA, Ma de G., J. J. CÓRDOBA, and R. JORDANO. "MICROBIOLOGICAL HAZARDS DURING PROCESSING OF CROQUETTES." Journal of Food Safety 19, no. 1 (April 1999): 1–15. http://dx.doi.org/10.1111/j.1745-4565.1999.tb00230.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Vaudaux, Bernard. "Environmental health hazards: How about microbiological pollution?" Environment International 24, no. 3 (April 1998): 249–50. http://dx.doi.org/10.1016/s0160-4120(98)00002-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Miles, Susan, Denise S. Braxton, and Lynn J. Frewer. "Public perceptions about microbiological hazards in food." British Food Journal 101, no. 10 (November 1999): 744–62. http://dx.doi.org/10.1108/00070709910293670.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hall, Robert H. "Biosensor technologies for detecting microbiological foodborne hazards." Microbes and Infection 4, no. 4 (April 2002): 425–32. http://dx.doi.org/10.1016/s1286-4579(02)01556-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Okotto-Okotto, Joseph, Diogo Trajano Gomes da Silva, Emmah Kwoba, Samuel M. Thumbi, Peggy Wanza, Weiyu Yu, and Jim A. Wright. "Effect of Inter-Observer Variation on the Association between Contamination Hazards and the Microbiological Quality of Water Sources: A Longitudinal Study." International Journal of Environmental Research and Public Health 17, no. 24 (December 9, 2020): 9192. http://dx.doi.org/10.3390/ijerph17249192.

Full text
Abstract:
Sanitary risk inspection protocols are often used to identify contamination hazards at water sources; however, different observers sometimes struggle to record hazards consistently. This study aimed to assess the effect of inter-observer variation in hazard observations on the strength of relationships between observed hazards and the bacterial contamination of water sources, particularly relationships with animal-related hazards. In a longitudinal study, five surveyors independently recorded hazards at 93 water sources used by 234 households in Siaya County, Kenya, in both wet and dry seasons. One surveyor collected samples from sources for subsequent Escherichia coli and intestinal enterococci testing. The relationship between each surveyor’s hazard observations and high bacterial contamination was examined using logistic regression. After controlling for water source type and preceding rainfall; percentage scores for animal-related hazards were significantly related to high contamination with enterococci and E. coli for one surveyor (odds ratio 1.02; 95% confidence intervals 1.00–1.03 for both parameters), but not for the remaining four surveyors. The relationship between observed contamination hazards and the microbiological contamination of water sources is sensitive to variation in hazard recording between surveyors. Sanitary risk protocols should be designed to enable robust and consistent observation of hazards.
APA, Harvard, Vancouver, ISO, and other styles
7

Mead, Geoff C. "Microbiological Hazards from Red Meat and Their Control." British Food Journal 96, no. 8 (September 1994): 33–36. http://dx.doi.org/10.1108/00070709410068783.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mossel, D. A. "Microbiological markers for swimming-associated infectious health hazards." American Journal of Public Health 76, no. 3 (March 1986): 297. http://dx.doi.org/10.2105/ajph.76.3.297-a.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

da Cruz, Adriano G., Sergio A. Cenci, and Maria Cristina A. Maia. "Microbiological hazards involved in fresh-cut lettuce processing." Journal of the Science of Food and Agriculture 88, no. 8 (2008): 1455–63. http://dx.doi.org/10.1002/jsfa.3240.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Collins, C. H., and D. A. Kennedy. "The microbiological hazards of municipal and clinical wastes." Journal of Applied Bacteriology 73, no. 1 (July 1992): 1–6. http://dx.doi.org/10.1111/j.1365-2672.1992.tb04961.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Microbiological hazards"

1

Pearson, Susan M. "Studies on microbiological hazards associated with ethnic foods, with particular reference to mycotoxin formation and clostridium perfringens." Thesis, Glasgow Caledonian University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325965.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rossi, Pamela. "Avaliação de perigos microbiologicos no preparo de formulas infantis em lactario hospitalar." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255610.

Full text
Abstract:
Orientador: Arnaldo Yoshiteru Kuaye
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
Made available in DSpace on 2018-08-08T22:34:46Z (GMT). No. of bitstreams: 1 Rossi_Pamela_M.pdf: 561994 bytes, checksum: 0c635e85ef1dedea4494569f9c9bbced (MD5) Previous issue date: 2007
Resumo: As doenças transmitidas por alimentos (DTAs) colocam em risco o bem estar e a vida de muitas pessoas todos os dias, apresentando maior severidade em pessoas com estado de saúde mais debilitado, como crianças hospitalizadas. Para esta população alvo, uma das principais fontes de perigos é a alimentação preparada nos lactários dos hospitais. Assim é evidente a importância de um sistema preventivo de controle de qualidade que garanta a segurança dos alimentos fornecidos para esses pacientes. Este trabalho teve o objetivo de avaliar perigos microbiológicos existentes no preparo de fórmulas infantis em lactário de hospital público, a fim de adequar o estabelecimento aos pré-requisitos necessários para posterior implantação do sistema Análise de Perigos e Pontos Críticos de Controle (APPCC). Esta avaliação foi feita através do diagnóstico das condições higiênico-sanitárias do estabelecimento e do estudo do fluxograma de preparo da fórmula láctea infantil (FLI) reconstituída, onde foram estabelecidos dez pontos amostrais, nos quais foram realizadas análises microbiológicas do ar, de equipamento e utensílios e da FLI em pó e reconstituída. As amostras foram coletadas em seis lotes de preparação, compondo um total de 60 amostras às quais foram realizadas determinações de coliformes totais e fecais, estafilococos coagulase positiva, Bacillus cereus, Salmonella, enterobactérias, e microrganismos aeróbios mesófilos e psicrotróficos totais. Os resultados das análises microbiológicas mostraram uma grande variação nas contagens dos microrganismos indicadores, porém nenhum dos microrganismos patogênicos analisados foi detectado pelos métodos utilizados. Todas as amostras da FLI em pó se mostraram adequadas para o consumo de acordo com a resolução legal vigente, porém as amostras das FLI reconstituída apresentaram contagens elevadas para a maioria dos microrganismos indicadores. A colher foi o único utensílio que se mostrou adequadamente higienizado em todas as determinações realizadas. As etapas de aquisição da matéria-prima; armazenamento sob refrigeração e aquecimento para distribuição, foram determinadas como pontos críticos de controle do processo. Com este estudo é possível concluir que a falta de pré-requisitos higiênico-sanitários durante o preparo da FLI reconstituída para lactentes, resulta em um produto microbiologicamente inadequado para crianças em estado de saúde debilitado e que a implantação do sistema APPCC só será possível se o estabelecimento se adequar a esses pré-requisitos
Abstract: Every day foodborne diseases put a lot of people's lives at risk, this being more severe in people with weakened health conditions, such as hospitalized children. For this target population, one of the main sources of foodborne diseases is the food prepared in the hospital lactaries. Thus the importance of a quality control preventive system that guarantees the safety of foods destined for these patients is evident. This work aimed to evaluate microbiological hazards existent in the preparation of infant formula in the lactary of a public hospital, in order to adapt the establishment to the necessary prerequisites for the subsequent implantation of the Hazard Analysis and Critical Control Point system (HACCP). This evaluation was made by diagnosing the hygienic conditions of the establishment and by studying the preparation flowchart of the reconstituted infant dairy formula (IDF), for which ten sampling points were established so as to make microbiological analyses of the air, equipment and utensils, and powdered and reconstituted IDF. The samples were collected in six preparation batches, giving a total of 60 samples, which were analysed for total and faecal coliformes, coagulase negative staphylococci, Bacillus cereus, Salmonella, enterobacteriae, and the total aerobic mesophilic and psycrotrophic microrganisms. The results of the microbiological analyses showed considerable variation in the quantity of the indicative microorganisms, but no pathogens were found by the methods used. All of the powdered IDF samples were appropriate for consumption according to the norms in force, but the reconstituted IDF samples presented high quantities of all the indicative microorganisms, except for faecal coliformes. The spoon was the only utensil that was found to be appropriately clean. The stages: acquisition of the powdered formula; storage under refrigeration and heating for distribution, were identified as the critical control points of the process. From this study it was concluded that the lack of hygienic prerequisites during the preparation of the reconstituted IDF for infants resulted in a microbiologically inadequate product for children in a weakened health condition, and that implantation of the HACCP system would only be possible after the establishment had adjusted itself to attend these prerequisites
Mestrado
Mestre em Tecnologia de Alimentos
APA, Harvard, Vancouver, ISO, and other styles
3

Lambrechts, Andre Albertus. "The efficacy of sanitation on microbiological hazards in ready-to-eat food outlets from selected primary manufacturers in Gauteng Province, South Africa." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/779.

Full text
Abstract:
Dissertation submitted in fulfilment of the requirements for the degree Master of Technology: Environmental Health in the Faculty of Applied Sciences at the Cape Peninsula University of Technology, 2011
The retail sector in South Africa is increasingly evolving into a dynamic industry, driven by changes in technology, saturating markets and globalisation. A major phenomenon in South Africa has been the evolution of hypermarkets, which sell large quantities of almost all consumer goods on a self-service basis. The South African consumers are becoming increasingly health conscious and, as such, the demand for wellness foods, health and convenience food has escalated. Convenience foods are expected to remain popular with consumers and supermarkets and will therefore increase the amount of ready-to-eat food items offered. As the retail industry has changed over the last two decades, so has the epidemiology of foodborne illnesses, with an increase in the incidence of bacterial infections caused by emerging organisms. In addition, there are certain food safety issues specifically associated with ready-to-eat foods. In recent years, incidences of enteric diseases associated with meat consumption have risen. The emergence of several new foodborne diseases has led to an increased focus attention on the issue of food safety by consumers and the industry. The most commonly implicated foods in these disease outbreaks have been meat and dairy products. The microbial load of eight convenience food manufacturing plants was determined by firstly sampling stainless steel food contact surfaces after they had been cleaned and sanitised at the end of a day‘s shift. The samples were analysed for Total Plate Count (TPC), Escherichia coli, Salmonella species and Staphylococcus aureus and Listeria. The results showed that 59 % of the total areas sampled for TPC failed to comply with the legal requirements for food surfaces specified in the South African Health Act (< 100 cfu.cm-2). Listeria was detected in 23 % of the samples taken and E.coli was found in 1.3 % of the samples, while S. aureus was not detected in any of the samples. Fifty percent of the plants applied conventional cleaning methods for cleaning and sanitation and the remaining 50 % used the low-pressure foam (LPF) method. The bacterial results of the two cleaning methods were statistically compared and a statistically significant difference (P ≤ 0.05) was found between the TPC means of the cleaning methods after cleaning. No statistically significant difference (P > 0.05) was found in terms of the Listeria species counts after both cleaning processes. The LPF method proved to be the superior cleaning option for reducing TPC counts. Secondly surface samples were collected from washed and sanitised dominant hands of food handlers and analysed for the presence of total plate counts, S. aureus and E. coli. The study aimed to evaluate the efficacy of hand washing practices and sanitation before commencing work. A total of 230 samples were collected, involving 100 % of the food handlers in selected convenience food outlets. The highest bacterial count taken from handswas 7.4 x 10-3 cfu.cm-2 and the lowest showed no detectable growth. Forty percent of the TPC analysed complied with the legal limit of < 100 cfu.cm-2 and only 18 % of the food handlers had no detectable bacteria present on their hands. One hand sample tested positive for E. coli, which is generally viewed as an indication of faecal contamination. S. aureus could not be detected on the hands of any of the food handlers. The results of this study indicated that hand hygiene is unsatisfactory and underlined the importance of further training to improve food handlers‘ knowledge of good hand washing practices. The study also aimed to present data on the food hygiene knowledge and practices of food handlers based on a representative sample from convenience food outlets in the Gauteng area. The management, as well as food handlers, were interviewed without prior announcement and managers were interviewed prior to starting their shifts, followed by food handlers, after they had passed through the change room and hand wash facilities. Although the majority of food handlers adhered to basic hygiene principles, the results highlighted a need for proper and continuous training in hygiene practices, not only for food handlers, but also for management. Furthermore, all food handlers should adhere to a formal cleaning schedule and specific courses should be planned for food handlers. Most training is done away from the workplace and the workers might find it difficult to translate theory into practice. Although food safety training programmes are essential, behavioural changes will not occur merely as a result of having received training but rather continuous development of food handlers. In conclusion, the popularity of convenience food is bound to increase with the growing appeal for modern foods. Consumers in South Africa nowadays demand good quality and safe products at a reasonable cost. Due to continuous time constraints, convenience food is the food of the future for the working mother. It is clear that managing foodborne disease is a challenge and an economic problem subject to various constraints. Food safety has too often become a hit-or-miss gamble, with parents obliged to roll the dice when it comes to the safety of their children‘s food and consumers in general. The food industry therefore needs to improve food safety processes to prevent the contamination of foods and use methods to ensure safe food for consumers. Better training, more testing and better methods of tracking food must be utilised to verify that the processes are working. This study endeavoured to add to the understanding and improvement of hygiene processes as well as food handlers‘ practices in the convenience food industry in the Gauteng Province.
APA, Harvard, Vancouver, ISO, and other styles
4

Markman, Caroline Viana. "Caracterização de Vibrio cholerae, V. parahaemolyticus e V. vulnificus em amostras da região costeira do estado de São Paulo, de regiões portuárias brasileiras e de tanques de lastro de navios." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/42/42132/tde-16072009-132501/.

Full text
Abstract:
A poluição, alteração física do habitat e a introdução de espécies invasoras via água de lastro, representam os maiores impactos antropogênicos para os ambientes costeiros. Foram pesquisadas em amostras da região costeira de S. Paulo, regiões portuárias brasileiras e de tanques de lastro de navios, bactérias das espécies Vibrio cholerae (Vc), V. parahaemolyticus (Vp) e V. vulnificus (Vv) que são as que têm maior implicação na saúde pública. As amostras foram avaliadas levando-se em conta parâmetros físico-químicos e microbiológicos e suas relações com a presença de Vc, Vp e Vv. As relações clonais foram verificadas através das técnicas de ERIC, BOX e REP-PCR. Foram identificadas 90 cepas de Vp e 11 de Vc. Foram observadas correlações entre alguns parâmetros microbiológicos e a presença de vibrios. A análise clonal permitiu verificar a alta diversidade das cepas. Concluiu-se que Vc e Vp são autóctones do ambiente costeiro brasileiro e podem ser tornar reservatórios para determinados fatores associados à virulência, gerando cepas com potencial epidêmico.
Pollution, physical alteration of habitat and the introduction of alien species through ballast water constitute the biggest anthropogenic impacts on coastal environments. We examined samples taken from the coastal region of S. Paulo state, Brazilian ports and ship ballast tanks, for bacteria of the species Vibrio cholerae (Vc), V. parahaemolyticus (Vp) and V. vulnificus (Vv) which have the most significant implication for public health. The samples were evaluated for microbiological and physical-chemical parameters as well as the presence of Vc, Vp and Vv. Clonal relationships of bacterial isolates were determined through ERIC, BOX and REP-PCR. A total of 90 strains of Vp and 11 of Vc were identified. Correlations between some microbiological parameters and the presence of vibrios were observed. The clonal analysis revealed extensive strain diversity. We concluded that Vc and Vp are autochthonous bacteria of the Brazilian coastal environment that can become reservoirs for factors associated with virulence, and are capable of generating strains with epidemic potential.
APA, Harvard, Vancouver, ISO, and other styles
5

Kolbábek, Antonín. "Zemní výměníky tepla - provozní režimy a jejich vliv na mikrobiologická rizika." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-263384.

Full text
Abstract:
This thesis deals with the Air to Ground Heat Exchangers (AGHEx) and their effects on the hygienic quality of the supplied air and the microbial microclimate in the interior of buildings. The theoretical part focuses on current findings and knowledge in the field of warm air heating, ventilation of the low-energy and energy passive houses and ground heat exchanger for the ventilation systems to family houses. The next chapter deals with the quality of the indoor environment and the influence on HVAC systems on the building microclimate. The experimental part of the thesis presents the results of energy simulations of operation of air to ground heat exchanger, obtained using the simplified model, and the data from long-term monitoring of experimental AGHEx built at FME BUT. Furthermore, the results of microbiological research of several already operating air to ground heat exchangers are evaluated. The research was carried out using two different sampling methods: the method using swabs taken from the pipe wall, and the sedimentation (gravimetric) method. The conclusion part mentions the practical experiences of users and knowledge of the author relating to the design, operation and use of air to ground heat exchangers.
APA, Harvard, Vancouver, ISO, and other styles
6

Rhodehamel, Edward Jeffery. "A microbiological decision tree approach for performing a hazard analysis and its relationship to microbiological risk analysis." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151500/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Toure, Ousmane. "Implementation of the hazard analysis critical control point (HACCP) method to improve microbiological food safety in peri-urban Mali." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2009. http://researchonline.lshtm.ac.uk/1343274/.

Full text
Abstract:
Diarrhoeal diseases remain a main cause of preventable death, particularly among children under five years of age in developing countries. In addition, many studies related to infant diarrhoea causation have demonstrated that the level of contamination is higher in weaning foods than in drinking water. Furthermore, many studies addressed food microbiological contamination and its role in diarrhoea causation. But few of them resulted in an intervention. Although the Hazard Analysis, Critical Control Point (HACCP) approach has been developed and widely applied to food promotion in industrialised countries, and adapted to small and/or less Developed Businesses, few studies have examined its relevance to domestic preparation of food. However, these latter predicted that the implementation of the approach could lead to an improvement of household bacteriological food safety, but none of them completed the approach to find out how effective it is. Therefore, this study aimed to take that work one step further, and carried out a small-scale intervention developed on the basis of the HACCP approach. This latter has been extended to health district level in order to find out its impact on microbial reduction in weaning food. Experiment: The HACCP approach has been applied step by step, to two selected weaning foods prepared by 15 volunteer mothers in peri urban Mali. After setting Critical Control Point (CCP), actions were taken to control, reduce or eliminate microbial growth at these points. 432 food samples were collected and analysed in local Laboratory for FC count to assess the effectiveness of the approach. Lessons learnt were translated into messages delivered in a pilot study. Pilot study: Sample of 60 volunteer mothers selected randomly was split into two groups of 30, the first undergoing messages directed to actions implementation, and the second standing as a control. Bacteriological samples were taken and analysed and physical parameters were measured,· as in the experiment, in 60 households before the intervention and data collected set as baseline. After three weeks training, alongside with observations, foods samples were taken in both intervention and control households for Fe count in local Laboratory. Flow diag~ams of foods, Moni and Fish Soup indicated that they were exposed to contamination at all steps of their preparation and handling. The hazard analysis confirmed FC contamtnation of all suspected steps except cooking. Four CCPs were identified for each food (cooking, reheating, child service with cooled food after cooking, and child service with cooled food after reheating). The experiment showed that traditional cooking was very effective in FC elimination; reheating was as effective as cooking when adopted, because no difference existed between two operations' temperatures (P<0.0001). Behavioural corrective actions were effective in controlling FC contamination at remaining CCPs (child service after cooking and child service after reheating). In conclusion, the HACCP experiment improved significantly the bacterial safety of the two type of weaning foods studied. Thus its behavioural corrective actions were translated into educational messages for the following phase aiming to confirm the effectiveness of the HACCP approach in improving foods safety at household level. The pilot study data showed the effectiveness of cooking in FC elimination at CCPs considered. A comparison of seasonal variation of FC contamination levels at CCPs showed that these levels were higher at Moni cooking CCP in December (cold season) (P<0.0004) and in August (rainy season) (P<0.0002), compared to June (dry season). They were also higher at Fish Soup storage CCP in December compared to August (P< 0.0098). There was significant difference in FC contamination levels between cooking and storage CCPs, the latter was higher than the former, for both Moni and Fish Soup (P< 0.0001). A comparison of FC contamination levels before and after intervention showed that the intervention was very effective in FC contamination reduction at the two remaining CCPs (service after cooking and service after reheating), (P<0.0001). Indeed, at the end of the intervention, contamination levels were less than 10FC/g in more than 83% of cooled food samples (prior to child service) after cooking and about 96% of cooled food samples (prior to child service) after reheating. An assessment of the intervention mothers' ability to perform actions three months later resulted in a better effect, 83 % to 100% of food samples' FC contam.ination levels met the standard. The present research findings showed that not only was the HACCP approach effective in improving home food safety but also, it was relevant for food hygiene and safety promotion in low income community. Two research questions were highlighted: firstly, could food safety improvement achieved through the HACCP approach result in diarrhoea morbidity and mortality reduction among young children? And secondly, is the approach scalable and cost effective?
APA, Harvard, Vancouver, ISO, and other styles
8

García, Daiana. "Predictive mycology and use of natural antifungals to prevent the mycotoxin food hazard." Doctoral thesis, Universitat de Lleida, 2012. http://hdl.handle.net/10803/93074.

Full text
Abstract:
Filamentous moulds may cause spoilage in raw materials, foods and feeds. Some of them synthesize mycotoxins which are a risk for human and animal health. For this reason, from the food safety point of view, only mycotoxins, as chemical hazards, are important. Nevertheless, despite the absence of direct correlation between mould growth and mycotoxins production, the prevention of fungal growth in raw materials and foods leads invariably to the prevention of mycotoxins presence. Due to the fact that moulds can contaminate foods from raw materials till end products, different strategies could be used at the different steps in the food chain. Preharvest strategies include the use of resistant varieties, crop rotation, soil preparation, optimal irrigation, fertilizer, herbicides, insecticides and chemical and biological agents application. Post-harvest strategies include improved drying and storage conditions, together with the use of natural and chemical agents. Predictive models may be used as a strategy to predict and prevent mycotoxigenjc fungal growth and mycotoxins accumulation. The present PhD work focused in two main strategies: a) The use of antifungals of natural origin to prevent from mycotoxigenic fungi and mycotoxins Equisetum arvense and Stevia rebaudiana extracts were analized as possible natural agents to inhibit growth and mycotoxin accumulation in in vitro and in vivo experiments. Both extracts were effective against mycotoxigenic moulds and the mycotoxigenic Aspergillus and Fusarium isolates studied were completely inhibited by a 3% of E. arvense. However, the effect decreased in the in vivo test. In the last case, Equisetum was effective against Aspergillus section Flavi and Fusarium section Liseola growth at high water activity levels and with high infection levels, but mycotoxins levels were not significantly affected. b) The assessment of the usefulness of predictive models to manage the mycotoxin problem In an initial experiment, four particular points which deserved in depth study to assess the viability of predictive microbiology in the moulds field were identified: 1) models should be developed for longer time periods; 2) food and raw materials prone to mycotoxin contamination are usually stored under marginal conditions for mould growth, thus performance of models should be checked under such conditions; 3) the impact of the inoculum size in the performance of the models; and 4) the impact of the potential intraspecies variability among isolates in prediction performance. Prediction of time to growth by kinetic models was clearly linked to inoculum size. On the other hand, the performance of predictive models may be compromised under marginal conditions for fungal growth, the higher variability of results under these conditions results in the need for a higher number of replicates required, specifically for kinetic models. For last, a high intraspecific variability on growth and mycotoxin levels has proven to be wider for the both isolates studies: A. carbonarius and P. expansum. For this reason, a greater number of strains should be included to develop models under non optimal condition for both, growth and for mycotoxin production. A matrix was built from which the number of strains and replicates to be planned for new experiments can be assessed for a reliable estimation of growth parameters and we conclude that increasing the number of strains in an experiment increases the explained variability much more than including further replicates. Finally, a first attempt was done to model aflatoxins production as a function of growth parameters and time. Aflatoxins accumulation was shown to be better correlated to colony area than either colony diameter or fungal biomass. Luedeking-Piret model was used for this purpose, and reasonable percentages of variability were explained. To conclude, probability models applied either to mould growth or mycotoxin production might be a valuable tool in food safety management through the food chain.
APA, Harvard, Vancouver, ISO, and other styles
9

Mariano, Luísa Alexandra Antunes. "Qualidade dos alimentos prontos a servir do distrito de Aveiro." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7972.

Full text
Abstract:
Mestrado em Microbiologia
Nos últimos anos, observou-se um aumento do consumo de alimentos prontos a comer em estabelecimentos de restauração a nível mundial. Consequentemente, a vigilância microbiológica dos alimentos produzidos nestas unidades tornou-se uma área de grande interesse do ponto de vista da Saúde Publica. O objectivo deste estudo foi avaliar a qualidade microbiológica dos alimentos prontos a comer (alimentos cozinhados, alimentos mistos e saladas) servidos em restaurantes, escolas e lares do Distrito de Aveiro. Esta avaliação foi realizada de acordo com a legislação elaborada pelo Instituto Nacional de Saúde Dr. Ricardo Jorge. O período de estudo foi de sete anos (2004 a 2010). Foram estudadas 3295 amostras de alimentos e 2031 amostras de utensílios utilizados na confecção dos alimentos. Os alimentos e utensílios foram submetidos e avaliados através de análises microbiológicas de quantificação de microrganismos a 30°C, bolores e leveduras, coliformes totais, E. coli, S. aureus, Clostridium e presença de Listeria e Salmonella. Os resultados mostraram que os alimentos mistos foram os que apresentaram maior percentagem de amostras não satisfatórias (41%). Dos três tipos de instituições estudadas os restaurantes foram os que apresentaram alimentos com pior qualidade microbiológica (25% de amostras não satisfatórias) e os lares foram as que apresentaram menos amostras não satisfatórias (14% de amostras não satisfatórias). Nas escolas a percentagem de amostras não satisfatórias foi de 15%. Os microrganismos a 30°C foram os que mais frequentemente ultrapassaram o valor legislado (em 19% das amostras). Os microrganismos patogénicos mais implicados na má qualidade dos alimentos foram os Staphylococcus aureus (ultrapassaram o valor limite em 1% das amostras). Durante o período de estudo observou-se um aumento progressivo da qualidade microbiológica dos alimentos prontos a comer. Apesar da implementação do sistema HACCP nos estabelecimentos de restauração em Portugal em 1998, a percentagem de alimentos prontos a comer, servidos nestes estabelecimentos, que apresentam má qualidade microbiológica é ainda muito alta (18% em média).
In recent years, emerged a trend of increasing consumption of ready to eat food in catering establishments worldwide. Consequently, the microbiological surveillance of food produced in these units has become an area of great interest from the point of view of Public Health. The aim of this study was to evaluate the microbiological quality of ready to eat food (cooked food, mixed food and salads) served in restaurants, schools and nursing homes in the District of Aveiro. This evaluation was performed in accordance with the rules established by the National Institute of Health Dr. Ricardo Jorge. The study period was seven years (2004 to 2010), and were analyzed 3295 samples of food and 2031 samples of cooking utensils. The food and cooking utensils were evaluated through microbiological quantification of microorganisms at 30 ° C, yeasts and molds, total coliforms, E. coli, S. aureus, Clostridium and presence of Listeria and Salmonella. The results showed that mixed food presented the highest percentage of unsatisfactory samples (41%). Of the three types of institutions studied, the restaurants were those with the worst microbiological quality of food (25% of unsatisfactory samples) and old nursing homes showed the best quality (14% of unsatisfactory samples). In schools the percentage of unsatisfactory samples was 15%. Microorganisms at 30 ° C were the parameter that more often exceeded the legislated value (19% of samples). The pathogenic microorganisms most commonly implicated in the poor quality of food were Staphylococcus aureus (exceeded the limit in 1% of samples). During the study period there was a progressive increase in the microbiological quality of ready to eat food. Despite the implementation of HACCP in restaurants in Portugal in 1998, the percentage of ready to eat food served in these establishments that present a poor microbiological quality is still very high (18% on average).
APA, Harvard, Vancouver, ISO, and other styles
10

Silva, Natália Menezes. "Processamento e condições higienicossanitárias de frutos e polpas em comunidades quilombolas." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/5854.

Full text
Abstract:
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2016-08-08T12:54:40Z No. of bitstreams: 2 Dissertação - Natália Menezes Silva - 2016.pdf: 5000977 bytes, checksum: e00d87ceb9bd95951496870e4475fc1b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-08-08T12:56:13Z (GMT) No. of bitstreams: 2 Dissertação - Natália Menezes Silva - 2016.pdf: 5000977 bytes, checksum: e00d87ceb9bd95951496870e4475fc1b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Made available in DSpace on 2016-08-08T12:56:13Z (GMT). No. of bitstreams: 2 Dissertação - Natália Menezes Silva - 2016.pdf: 5000977 bytes, checksum: e00d87ceb9bd95951496870e4475fc1b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-05-02
Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
The pulp processing is a possibility for use of fruits by traditional people like the quilombolas, inserted in a context in which native fruits are little consumed. Therefore, the hygienic and sanitary quality is essential in the production of safe food. This study aimed to evaluate the processing and hygienic and sanitary conditions of fruits and fruit pulps in quilombola community. The survey was conducted in the Community of the Remnant of Quilombo do Pombal, Goiás, Brazil. To evaluate the physical and functional conditions was applied a checklist before and after the implementation of structural adjustments, training and implementation of the Manual of Good Practices and Standard Operating Procedures. Data were categorized according to the percentage of adequacy. Microbiological analyzes of 32 samples were taken including, fruits of Cerrado found in the community and fruits and their pulps in different steps of the flowchart production. The hazards and critical control points were listed in the production flow chart. The physical and functional diagnostic performed indicated average compliance of blocks of 30.18%, being classified in Group 3, unsatisfactory. After interventions, there was 62.13% of compliance, with classification in Group 2, regular (p <0.05). The intervention effect was significant (p <0.05) for five of the seven blocks evaluated. Microbiological analysis indicated that all the native fruits collected are in accordance with the recommendations of the current health legislation. Fruits and pulps included into processing flowchart presented in accordance with sanitary standards for fecal coliform count and detection of Salmonella spp, however, the mold count and yeast in eight pulps analyzed indicated that five of them had counts above the established by legislation. The results suggest fruit contamination since the harvest and multiplication of such micro-organisms in the remaining stages. The washing and filling steps were able to reduce the load of molds and yeasts. It is understood that the physical and functional adaptations implemented were important to increase the percentage of adequacy of the items, however, the persistence of shortcomings in the work process may compromise the quality of the final product, stressing the need for compliance with good practices.
O processamento de polpas constitui uma possibilidade para utilização de frutos por povos tradicionais como os quilombolas, inseridos em um contexto no qual frutos nativos são pouco consumidos. Para tanto, a qualidade higienicossanitária é fundamental na produção de um alimento seguro. O objetivo deste estudo foi avaliar o processamento e as condições higienicossanitárias de frutos e polpas de frutas em comunidade quilombola. A pesquisa foi realizada na Comunidade dos Remanescentes do Quilombo do Pombal, Goiás, Brasil. Para avaliação das condições físico-funcionais foi aplicada lista de verificação antes e após a realização de adequações estruturais, capacitações e implementação do Manual de Boas Práticas e Procedimentos Operacionais Padronizados. Os dados foram categorizados de acordo com o percentual de adequação. Foram realizadas análises microbiológicas de 32 amostras incluindo, frutos do Cerrado encontrados na comunidade e frutos e suas polpas em diferentes etapas do fluxograma. Foram elencados os perigos e Pontos Críticos de Controle no fluxograma de produção. O diagnóstico físico-funcional realizado indicou média de conformidade dos blocos de 30,18%, sendo classificado no Grupo 3, insatisfatório. Após intervenções, verificou-se 62,13% de conformidade, com classificação no Grupo 2, regular (p<0.05). O efeito da intervenção foi significativo (p<0,05) para cincos dos sete blocos avaliados. A análise microbiológica indicou que todos os frutos nativos coletados estão em conformidade com as recomendações da legislação sanitária vigente. Os frutos e polpas inseridos no fluxograma de processamento apresentaram-se de acordo aos padrões sanitários para contagem de coliformes termotolerantes e pesquisa de Salmonella spp, porém, a contagem de bolores e leveduras em oito polpas analisadas, indicou que cinco apresentaram contagem acima do estabelecido pela legislação. Os resultados sugerem contaminação do fruto já na colheita e a multiplicação destes micro-organismos nas demais etapas, sendo que as etapas de lavagem e envase foram capazes de reduzir a carga de bolores e leveduras. Entende-se que as adequações físico-funcionais implementadas foram importantes para o aumento do percentual de adequação dos itens, contudo, a persistência de falhas no processo de trabalho pode comprometer a qualidade do produto final, ressaltando a necessidade de adequação às boas práticas.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Microbiological hazards"

1

Denny, S. Microbiological hazards in water supplies. Swindon: Water Research Council, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Collins, C. H. The microbiological hazards of occupations. Leeds: H & H Scientific Consultants in association with Science Reviews, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

World Health Organization (WHO). Risk characterization of microbiological hazards in food: Guidelines. Geneva, Switzerland: World Health Organization, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Food and Agriculture Organization of the United Nations. Microbiological hazards in fresh leafy vegetables and herbs: Meeting report. Geneva: World Health Organization, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Joint FAO/WHO Expert Consultation on Risk Assessment of Microbiological Hazards in Foods (2000 Rome, Italy). Joint FAO/WHO Expert Consultation on Risk Assessment of Microbiological Hazards in Foods: FAO headquarters, Rome, 17-21 July 2000. Rome: FAO, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Joint, FAO/WHO Expert Consultation on Risk Assessment of Microbiological Hazards in Foods (2001 Rome Italy). Joint FAO/WHO Expert Consultation on Risk Assessment of Microbiological Hazards in Foods: Risk characterization of Salmonella spp. in eggs and broiler chickens and Listeria monocytogenes in ready-to-eat foods : FAO headquarters, Rome, 30 April-4 May 2001. Rome: FAO and WHO, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

International Commission on Microbiological Specifications for Foods. Application of the hazard analysis critical control point (HACCP) system to ensure microbiological safety and quality. Oxford [England]: Blackwell Scientific, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Song, Chu-hyŏn. Inchʻe chojik oyŏm misaengmul ŭi wihaedo pullyu e ttarŭn anjŏnsŏng yŏnʼgu =: Study for microbiological safety of human tissue according to be the classification of hazard of contaminated organism. [Seoul]: Sikpʻum Ŭiyakpʻum Anjŏnchʻŏng, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Responsible research: With biological select agents and toxins. Washington, DC: National Academies Press, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Organization, World Health, and Food and Agriculture Organization of the United Nations., eds. Exposure assessment of microbiological hazards in food: Guidelines. Geneva: World Health Organization, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Microbiological hazards"

1

Sanchez, Susan, Monique França, and Nicole M. Nemeth. "Microbiological Hazards of Wild Birds and Free-Range Chickens." In Food Safety Risks from Wildlife, 89–130. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24442-6_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rowan, N. J., J. G. Anderson, and J. E. Smith. "Potential infective and toxic microbiological hazards associated with the consumption of fermented foods." In Microbiology of Fermented Foods, 812–37. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4613-0309-1_26.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kaur, Jupinder, and S. K. Gosal. "Biotransformation of Pollutants: A Microbiological Perspective." In Rhizobiont in Bioremediation of Hazardous Waste, 151–62. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0602-1_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Coetzer, Elmé. "Microbiological Risk in Produce from the Field to Packing." In Microbial Hazard Identification in Fresh Fruit and Vegetables, 73–94. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0470007761.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Paje, M. L., C. G. Alfafara, V. P. Migo, J. P. Magbanua, M. P. Yabes, and E. C. Bugante. "Microbiological and Chemical Methods for Decolorization of Molasses-Derived Alcohol Distillery Effluent." In Environmental Monitoring and Biodiagnostics of Hazardous Contaminants, 305–14. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-1445-7_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Buchanan, Robert L., and E. Noelia Williams. "Hazard Analysis and Critical Control Point System: Use in Managing Microbiological Food Safety Risks." In Food Microbiology, 1039–57. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555818463.ch42.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Lingaas, Egil, and Tore Kalager. "Microbiological Hazards." In Occupational Hazards in the Health Professions, 71–119. CRC Press, 2020. http://dx.doi.org/10.1201/9781003068617-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jackson, Tim. "Management of Microbiological Hazards." In Food Safety Management, 889–917. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-381504-0.00033-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

"Microbiological Hazards and Their Control." In Microbiological Testing in Food Safety Management, 1–21. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4684-8369-7_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

"Microbiological Hazards and Their Control." In Microorganisms in Foods 7, 1–21. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0745-1_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Microbiological hazards"

1

Cibin, Veronica, M. Favretti, A. M. Cereser, F. Barrucci, M. Dal Cin, A. Pezzuto, A. Longo, E. Ramon, S. de Rui, and A. Ricci. "Identification of control strategies to manage microbiological risks in typical pork products." In Ninth International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork. Iowa State University, Digital Press, 2011. http://dx.doi.org/10.31274/safepork-180809-681.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Quessy, Sylvain, G. Larivière-Gauthier, Philipe Fravalo, S. Fournaise, and Ann Letellier. "Evaluation of ozonated water as a microbiological risk mitigation option in pork production." In Ninth International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork. Iowa State University, Digital Press, 2011. http://dx.doi.org/10.31274/safepork-180809-650.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hill, A. A., E. L. Snary, R. R. L. Simons, A. N. Swart, H. Vigre, A. R. Domingues, Tine Hald, et al. "A Quantitative Microbiological Risk Assessment for Salmonella transmission in pigs in individual EU Member States." In Ninth International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork. Iowa State University, Digital Press, 2011. http://dx.doi.org/10.31274/safepork-180809-608.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pruntova, Olga, and Natalia Shadrova Galina Skitovich. "Analysis of microbiological tests results for pork and pork products produced in the central region of the Russian Federation in 2012–2016." In Safe Pork 2015: Epidemiology and control of hazards in pork production chain. Iowa State University, Digital Press, 2017. http://dx.doi.org/10.31274/safepork-180809-364.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mordmueller, Mario, Christian Bohling, Andreas John, and Wolfgang Schade. "Rapid test for the detection of hazardous microbiological material." In SPIE Europe Security + Defence, edited by John C. Carrano and Charles J. Collins. SPIE, 2009. http://dx.doi.org/10.1117/12.830200.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kariyawasam, Shahani, Patrick Yeung, Stuart Clouston, and Geoffrey Hurd. "Overcoming Technical Limitations in Identifying and Characterizing Critical Complex Corrosion." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90529.

Full text
Abstract:
In 2009 a pipeline within the TransCanada pipeline system experienced a rupture. As this pipeline was already under a rigorous In Line Inspection (ILI) based corrosion management program this failure led to an extensive root cause analysis. Even though the hazard causing the failure was microbiologically induced corrosion (MIC) under tape coating, the more troubling question was “Why had the severity of this anomaly not been determined by the ILI based corrosion management program?” This led to an investigation of what key characteristics of the ILI signals resulting from areas of “complex corrosion” are more difficult to correctly interpret and size and furthermore where the line condition is such that manual verification is needed. By better understanding the limitations of the technology, processes used, and the critical defect signal characteristics, criteria were developed to ensure that “areas of concern” are consistently identified, manually verified and therefore the sizing is validated at these potentially higher risk locations. These new criteria were applied on ILI data and then validated against in-the-ditch measurements and a hydrotest. This process in conjunction with optimization of ILI sizing algorithms enabled the operator to overcome some of the known challenges in sizing areas of complex corrosion and update its corrosion management process to improve the detection and remediation of critical defects. This paper describes this investigation of the failure location, development of the complex corrosion criteria, and the validation of effectiveness of the criteria. The criteria are focused on external corrosion and have been currently validated on pipelines of concern. Application to other lines should be similarly validated.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Microbiological hazards"

1

Cahaner, Avigdor, Susan J. Lamont, E. Dan Heller, and Jossi Hillel. Molecular Genetic Dissection of Complex Immunocompetence Traits in Broilers. United States Department of Agriculture, August 2003. http://dx.doi.org/10.32747/2003.7586461.bard.

Full text
Abstract:
Objectives: (1) Evaluate Immunocompetence-OTL-containing Chromosomal Regions (ICRs), marked by microsatellites or candidate genes, for magnitude of direct effect and for contribution to relationships among multiple immunocompetence, disease-resistance, and growth traits, in order to estimate epistatic and pleiotropic effects and to predict the potential breeding applications of such markers. (2) Evaluate the interaction of the ICRs with genetic backgrounds from multiple sources and of multiple levels of genetic variation, in order to predict the general applicability of molecular genetic markers across widely varied populations. Background: Diseases cause substantial economic losses to animal producers. Emerging pathogens, vaccine failures and intense management systems increase the impact of diseases on animal production. Moreover, zoonotic pathogens are a threat to human food safety when microbiological contamination of animal products occurs. Consumers are increasingly concerned about drug residues and antibiotic- resistant pathogens derived from animal products. The project used contemporary scientific technologies to investigate the genetics of chicken resistance to infectious disease. Genetic enhancement of the innate resistance of chicken populations provides a sustainable and ecologically sound approach to reduce microbial loads in agricultural populations. In turn, animals will be produced more efficiently with less need for drug treatment and will pose less of a potential food-safety hazard. Major achievements, conclusions and implications:. The PI and co-PIs had developed a refined research plan, aiming at the original but more focused objectives, that could be well-accomplished with the reduced awarded support. The successful conduct of that research over the past four years has yielded substantial new information about the genes and genetic markers that are associated with response to two important poultry pathogens, Salmonella enteritidis (SE) and Escherichia coli (EC), about variation of immunocompetence genes in poultry, about relationships of traits of immune response and production, and about interaction of genes with environment and with other genes and genetic background. The current BARD work has generated a base of knowledge and expertise regarding the genetic variation underlying the traits of immunocompetence and disease resistance. In addition, unique genetic resource populations of chickens have been established in the course of the current project, and they are essential for continued projects. The US laboratory has made considerable progress in studies of the genetics of resistance to SE. Microsatellite-marked chromosomal regions and several specific genes were linked to SE vaccine response or bacterial burden and the important phenomenon of gene interaction was identified in this system. In total, these studies demonstrate the role of genetics in SE response, the utility of the existing resource population, and the expertise of the research group in conducting such experiments. The Israeli laboratories had showed that the lines developed by selection for high or low level of antibody (Ab) response to EC differ similarly in Ab response to several other viral and bacterial pathogens, indicating the existence of a genetic control of general capacity of Ab response in young broilers. It was also found that the 10w-Ab line has developed, possibly via compensatory "natural" selection, higher cellular immune response. At the DNA levels, markers supposedly linked to immune response were identified, as well as SNP in the MHC, a candidate gene responsible for genetic differences in immunocompetence of chickens.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography