Relevant bibliographies by topics / Catalase test (Microbiology)

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Academic literature on the topic 'Catalase test (Microbiology)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Catalase test (Microbiology)"

1

Chester, B., and L. B. Moskowitz. "Rapid catalase supplemental test for identification of members of the family Enterobacteriaceae." Journal of Clinical Microbiology 25, no. 2 (1987): 439–41. http://dx.doi.org/10.1128/jcm.25.2.439-441.1987.

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2

Wong, J. D. "Porphyrin test as an alternative to benzidine test for detecting cytochromes in catalase-negative gram-positive cocci." Journal of Clinical Microbiology 25, no. 10 (1987): 2006–7. http://dx.doi.org/10.1128/jcm.25.10.2006-2007.1987.

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3

Gaillot, Olivier, Muriel Wetsch, Nicolas Fortineau, and Patrick Berche. "Evaluation of CHROMagar Staph. aureus, a New Chromogenic Medium, for Isolation and Presumptive Identification ofStaphylococcus aureus from Human Clinical Specimens." Journal of Clinical Microbiology 38, no. 4 (2000): 1587–91. http://dx.doi.org/10.1128/jcm.38.4.1587-1591.2000.

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CHROMagar Staph. aureus (CSA) is a new chromogenic medium for presumptive identification of Staphylococcus aureus as mauve colonies after 24 h of incubation. We conducted a preliminary study with 100 S. aureus and 45 coagulase-negative Staphylococcus (CoNS) stock isolates plated on CSA. All S. aureus isolates yielded mauve colonies after 24 h of incubation at 37°C, while CoNS isolates grew as blue, white, or beige colonies. Culture on CSA was then prospectively compared to a conventional laboratory method, i.e., culture on 5% horse blood agar (HBA), catalase test, and latex agglutination test (HBA-catalase-latex), for isolation and presumptive identification of S. aureus from 2,000 consecutive clinical samples. Among the 310 S. aureus isolates recovered by at least one of the two methods, 296 grew as typical mauve colonies on CSA, while only 254 yielded catalase-positive, latex-positive colonies on HBA. The sensitivity of CSA was significantly higher than that of the conventional method (95.5 and 81.9%, respectively;P < 0.001) and allowed the recovery of important clinical isolates that were undetected on blood agar. The specificities of the two methods were not significantly different, although that of CSA was slightly higher (99.4% versus 98.9% for HBA-catalase-latex;P = 0.08). On the basis of its excellent sensitivity and specificity, ease of identification of positive colonies, and absence of complementary testing, CSA can be recommended as a routine plating medium for presumptive identification of S. aureusin clinical specimens.
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4

Okuda, Masumi, Takako Osaki, Shogo Kikuchi, Junko Ueda, Yingsong Lin, Hideo Yonezawa, Kohei Maekawa, Fuhito Hojo, Shigeru Kamiya, and Yoshihiro Fukuda. "Evaluation of a stool antigen test using a mAb for native catalase for diagnosis of Helicobacter pylori infection in children and adults." Journal of Medical Microbiology 63, no. 12 (December 1, 2014): 1621–25. http://dx.doi.org/10.1099/jmm.0.077370-0.

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Non-invasive diagnosis of Helicobacter pylori infection is important not only for screening of infection but also for epidemiological studies. Stool antigen tests are non-invasive and are convenient to identify H. pylori infection, particularly in children. We evaluated the stool antigen test, which uses a mAb for native catalase of H. pylori developed in Japan. A total of 151 stool samples were collected from participants (52 children and 99 adults) of the Sasayama Cohort Study and stored between −30 and −80 °C. The stool antigen test used was Testmate pylori antigen (TPAg), and was performed according to the manufacturer’s instructions. Furthermore, we conducted a quantitative real-time PCR test and compared the PCR results with those of the TPAg test. When compared with the results in real-time PCR, the sensitivity of TPAg was 89.5 % overall, 82.7 % for children and 92.4 % for adults, and the specificity was 100 %. The accuracy was 93.4 % overall, 90.4 % for children and 94.9 % for adults, and there was no significant difference in the accuracy of TPAg between children and adults. Five of 28 children (18 %) and five of 38 adults (13 %) were PCR positive with negative TPAg results. Four of five children with positive PCR and negative TPAg results were given a 13C-urea breath test and all four children tested negative. No significant correlation was observed between the TPAg results and DNA numbers of H. pylori in faeces among children or adults. A stool antigen test (TPAg) using a mAb for native catalase is useful for diagnosis of H. pylori in children and adults. Additionally, this test has particularly high specificity.
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5

Monika, Siska, Dessy Yoswaty, and Nursyirwani Nursyirwani. "TEST THE ABILITY OF SEDIMENT BACTERIA ISOLATES IN DEGRADATING PHENOL." Asian Journal of Aquatic Sciences 2, no. 1 (January 10, 2020): 79–84. http://dx.doi.org/10.31258/ajoas.2.1.79-84.

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Phenol degrading bacteria can be found in various habitats in marine environments. This study aims to obtain bacteria from sediments that are able to degrade phenol. The process of bacterial purification and degradation was carried out from August to September 2018 at the Marine Microbiology Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine, University of Riau. Analysis of the reduction in phenol concentration was carried out using the APHA 5530 method using UV-VIS spectrophotometry conducted at the Health and Environment Laboratory. The bacterial isolates used as test bacteria were isolates BF1A, BF4B and BF9C. Bacterial and biochemical tests were carried out for all bacterial isolates. Two isolated showed mehyl red negative, all isolates were motile. Three isolates were positive catalase, able to ferment glucose and sucrose fermented citrate and two isolat were Gram negative bacterial. The three bacterial isolates were able to degrade phenol with the highest degradation for 1ppm shown in isolates BF1A, the highest degradation of concentrations of 2 ppm and 3 ppm was shown in isolates BF9C. Thus, the isolat BF9C was able to degrade the highest phenol.
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6

Fisher, Christopher W., Dongha Lee, Beth-Anne Dodge, Kristen M. Hamman, Justin B. Robbins, and Scott E. Martin. "Influence of Catalase and Superoxide Dismutase on Ozone Inactivation of Listeria monocytogenes." Applied and Environmental Microbiology 66, no. 4 (April 1, 2000): 1405–9. http://dx.doi.org/10.1128/aem.66.4.1405-1409.2000.

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ABSTRACT The effects of ozone at 0.25, 0.40, and 1.00 ppm on Listeria monocytogenes were evaluated in distilled water and phosphate-buffered saline. Differences in sensitivity to ozone were found to exist among the six strains examined. Greater cell death was found following exposure at lower temperatures. Early stationary-phase cells were less sensitive to ozone than mid-exponential- and late stationary-phase cells. Ozonation at 1.00 ppm of cabbage inoculated with L. monocytogenes effectively inactivated all cells after 5 min. The abilities of in vivo catalase and superoxide dismutase to protect the cells from ozone were also examined. Three listerial test strains were inactivated rapidly upon exposure to ozone. Both catalase and superoxide dismutase were found to protect listerial cells from ozone attack, with superoxide dismutase being more important than catalase in this protection.
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7

DAVIS, CARL E., and SAMUEL CYRUS. "Evaluation of a Rapid Method for Measurement of Catalase Activity in Cooked Beef and Sausage." Journal of Food Protection 61, no. 2 (February 1, 1998): 253–56. http://dx.doi.org/10.4315/0362-028x-61.2.253.

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Catalase (CAT) activity in ground beef and pork was determined on samples cooked from 60 to 71.1°C. One-gram samples of ground round (4% fat), hamburger (24% fat), and commercial pork sausage (38% fat) were cooked in a controlled-temperature waterbath at 65, 68.3, and 71°C. Chilled samples were immersed in direct contact with the cooking water; the test samples were removed every 15 s and immediately immersed in an ice-water bath (0 to 1 °C) to quick-chill the samples to prevent temperature over-run. Samples retained high (HMB value 20+, over range) CAT activity through 90, 60, and 45 s at 65, 68.3, and 71°C, respectively, before showing rapid activity decreases. Four USDA-FSIS approved meat patty heating processes (66.1°C, 41 s; 67.2°C, 26 s; 68.3°C, 16 s; and 69.4°C, 10 s) were analyzed for CAT activity. CAT activity in meat frozen prior to cooking was slightly lower (P &lt; 0.05) than in nonfrozen meat. CAT activity decreased (P &lt; 0.05) among meat treated at 66.1°C for 41 s, at 67.2°C for 26 s, and at 68.3°C for 16 s, but the treatment at 68.3°C for 16 s was not different (P &lt; 0.05) from that at 69.4°C for 10 s. These results show this rapid (20 to 25 min) CAT activity test could be used to establish activity values at specific end-point temperatures for model heat-processed ground beef or sausage products and may be useful to USDAFSIS process inspectors and food processors in quality assurance and HACCP (hazard analysis critical control points) programs for thermal input verification.
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8

Ahmed, S. M. Ali, Chandan Kumar Roy, Qamrul Hassan Jaigirdar, Rehana Razzak Khan, Ismet Nigar, and Ahmed Abu Saleh. "Identification of Malassezia species from suspected Pityriasis (versicolor) patients." Bangladesh Journal of Medical Microbiology 9, no. 2 (February 13, 2017): 17–19. http://dx.doi.org/10.3329/bjmm.v9i2.31424.

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Pityriasis versicolor is a chronic, superficial fungal infection affecting the superficial layer of a stratum corneum. Malassezia furfur is the major species involved in pityriasis versicolor. Currently many researchers reported increase in the incidence of other species as a causative agent of pityriasis versicolor. Isolation and identification of Malassezia species from suspected Pityriasis versicolor patients was conducted in the Department of Microbiology and immunology Bangabandhu Sheikh Mujib Medical University (BSMMU) from September 2013 to August 2014. Ninety two clinically diagnosed patients of Pityriasis versicolor were studied and samples from skin lesion were processed for direct microscopy and culture. Species of Malassezia were identified by cultural characteristics in Dixon's agar media by macro and microscopic observation of the colonies and by catalase test, urease test, esculin test and tween assimilation test. A totalof 92 cases 70(70.08%) were positive by direct microscopy and 50(54.34%) were positive by culture. Malassezia globosa was found in 38(76%) cases as the commonest etiological agent and Malassezia furfur was found in 10(20%) cases and Malassezia obtusa in 2 (4%) cases respectively.Bangladesh J Med Microbiol 2015; 9 (2): 17-19
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9

TOWNSEND, W. E., and L. C. BLANKENSHIP. "Methods for Detecting Processing Temperatures of Previously Cooked Meat and Poultry Products - A Review." Journal of Food Protection 52, no. 2 (February 1, 1989): 128–35. http://dx.doi.org/10.4315/0362-028x-52.2.128.

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Title 9 of the Code of Federal Regulations establishes prescribed thermal treatment for a variety of meat and poultry products. These requirements are to ensure the destruction of harmful microorganisms and viruses that cause diseases in humans and livestock. The information presented in this review provides information relative to the current procedures used by the Food Safety and Inspection Service (FSIS) for monitoring the adequacy of heat treatment of meat and poultry products; and the research activities that have been and are currently being conducted to develop new and/or improved methods for determining the maximum internal temperature of meat and poultry products. Currently, FSIS is using a protein “Coagulation Test” for monitoring the maximum internal temperature (MIT) of both beef and pork products heat processed to temperatures lower than 65°C; a residual “Acid Phosphatase Activity Method” for determining the MIT of canned hams, canned picnics and canned luncheon meat, and a third method, known as the “Bovine Catalase Test”, for the determination of catalase which gives a pass/fail indication at a cooking temperature of 62.8°C for rare roast beef and cooked beef. Since 1957, several attempts have been made to develop new and/or improved methods. These include an evaluation of the enzyme systems and various physical techniques. The lack of new and/or improved methods is not due to the lack of research efforts in this area, as evidenced by this review. The challenge is the development of a method which can accurately determine within ± 1.0°C the endpoint temperature in the temperature range (67.8 – 70.0°C) that is of most interest to FSIS.
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10

Janosch, D., S. Dubbert, K. Eiteljörge, B. W. K. Diehl, U. Sonnenborn, L. V. Passchier, T. M. Wassenaar, and R. von Bünau. "Anti-genotoxic and anti-mutagenic activity of Escherichia coli Nissle 1917 as assessed by in vitro tests." Beneficial Microbes 10, no. 4 (April 19, 2019): 449–61. http://dx.doi.org/10.3920/bm2018.0113.

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Anti-genotoxic or anti-mutagenic activity has been described for a number of Gram-positive probiotic bacterial species. Here we present evidence that Gram-negative Escherichia coli Nissle 1917 (EcN) also displays anti-genotoxic/anti-mutagenic activity, as assessed in vitro by the Comet Assay and the Ames Test, respectively. This activity was demonstrated by use of the mutagens 4-nitroquinoline-1-oxide (NQO), hydrogen peroxide (H2O2) and benzo(a) pyrene (B[a]P). For both assays and all three test agents the anti-genotoxic/anti-mutagenic activity of EcN was shown to be concentration dependent. By the use of extracts of bacteria that were inactivated by various procedures (heat treatment, ultrasound sonication or ultraviolet light irradiation), mechanistic explanations could be put forward. The proposed mechanisms were enforced by treating the bacterial material with proteinase K prior to testing. The mutagen H2O2 is most likely inactivated by enzymic activity, with catalase a likely candidate, while several explanations can be put forward for inactivation of B[a]P. NQO is most likely inactivated by metabolising enzymes, since the formation of the metabolite 4-aminoquinoline could be demonstrated. In conclusion, the in vitro results presented here make a strong case for antimutagenic properties of EcN.
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Dissertations / Theses on the topic "Catalase test (Microbiology)"

1

Wang, George Ing-Jye. "Feasibility of using catalase activity as an index of microbial loads on food surfaces." 1985. http://hdl.handle.net/2097/27573.

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Book chapters on the topic "Catalase test (Microbiology)"

1

Prince, CP. "Catalase Test." In Practical Manual of Medical Microbiology, 110. Jaypee Brothers Medical Publishers (P) Ltd., 2009. http://dx.doi.org/10.5005/jp/books/10654_25.

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