The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Wenfang Lin - One of the best experts on this subject based on the ideXlab platform.
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Profiling the Microbial Contamination in aviation fuel from an airport.
Biofouling, 2019Co-Authors: Wenfang Lin, Jie Zeng, Menglu Zhang, Lizheng Guo, Kun WanAbstract:Microbial Contamination during fuel storage can cause fuel system fouling and corrosion. Characterizing Microbial Contamination is critical for preventing and solving these problems. In this study,...
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A survey of Microbial Contamination in aviation fuel from aircraft fuel tanks
Folia Microbiologica, 2019Co-Authors: Dong Hu, Shangshu Wu, Chengsong Ye, Wenfang Lin, Jie Zeng, Xi Li, Xin YuAbstract:Microbial Contamination poses a great threat to aviation system security through mechanisms such as microbiologically influenced corrosion (MIC), fuel filter clogging, and fuel deterioration. In this study, a survey of Microbial Contamination in aviation fuel obtained from aircraft fuel tanks was performed to test the relationship between Microbial Contamination and aircraft service life. The contaminating microorganisms were counted, isolated, identified, and subjected to preliminary characterization. A low risk of Microbial Contamination in the selected samples was confirmed, and there was no significant difference in the counts between culturable bacteria and fungi ( p > 0.05). Phylogenetic analysis tree indicated that the diversity of culturable microorganisms was rather low, with 17 bacterial isolates belonging to 13 genera and 12 fungal isolates belonging to 5 genera. No yeast was isolated. The growth characteristics of these isolates indicated that the aircraft fuel tanks harbored various microorganisms that were able to utilize the aviation fuel as a source of carbon and energy. Meanwhile, some isolates caused emulsification and produced acid. The conclusions of this study were that various hazardous microorganisms can root in aircraft aviation fuel tanks. There was no relationship between Microbial Contamination and aircraft service life ( p > 0.05), and continuous good maintenance suppressed Microbial proliferation.
Karl C Klontz - One of the best experts on this subject based on the ideXlab platform.
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recalls of foods and cosmetics due to Microbial Contamination reported to the u s food and drug administration
Journal of Food Protection, 2000Co-Authors: Stephanie Wong, Debra Street, Sonia I Delgado, Karl C KlontzAbstract:In the U.S., food product recalls serve as an important intervention in stemming the consumption of food products contaminated with infectious disease agents. We summarize the number and nature of foods and cosmetics recalled as a result of Microbial Contamination reported to the U.S. Food and Drug Administration (FDA) for the period 1 October 1993 through 30 September 1998. During this period, Microbial Contamination of food and cosmetic products was the leading cause for recalls, accounting for a total of 1,370 recalls (36% of all products recalled). Listeria monocytogenes accounted for the greatest number of food products recalled because of Microbial Contamination, whereas Pseudomonas aeruginosa was the most common microbe associated with recalls of cosmetic products. Dairy products, followed by seafood and pastry items, were the types of products most often associated with recalls due to Microbial Contamination. The FDA was the entity most often responsible for detecting Microbial Contamination of foods and cosmetics (33% of all such recalls), followed by state regulatory agencies (24%), and manufacturers/retailers (21%). Nineteen percent of recalls were associated with at least one reported case of illness. Salmonella was the pathogen most often implicated in reports of illness associated with these recalled products.
Jacinta M M Oliveira - One of the best experts on this subject based on the ideXlab platform.
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Microbial Contamination and purification of bivalve shellfish crucial aspects in monitoring and future perspectives a mini review
Food Control, 2011Co-Authors: Jacinta M M Oliveira, A Cunha, Fernanda Castilho, Jesus L Romalde, Mario Jorge PereiraAbstract:Abstract Shellfish are a nutritious food source whose consumption and commercial value has risen dramatically worldwide. Although bivalve’s consumption can contribute to a healthy diet, some can cause foodborne illnesses. Microbial Contamination is chronic and pervasive in harvesting areas and may be passed on to the consumers. Current food safety programs intend to protect consumers. Nevertheless, bivalve’s Microbial Contamination is underestimated and undermanaged, which can pose a potential public health risk. We intend to provide an updated overview of the Microbial assessment of bivalves and emerging alternatives or complementary perspectives for the elimination of Microbial Contamination. Further research is needed for the improvement of public health control and the enhancement of shellfish safety.
Jie Zeng - One of the best experts on this subject based on the ideXlab platform.
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Profiling the Microbial Contamination in aviation fuel from an airport.
Biofouling, 2019Co-Authors: Wenfang Lin, Jie Zeng, Menglu Zhang, Lizheng Guo, Kun WanAbstract:Microbial Contamination during fuel storage can cause fuel system fouling and corrosion. Characterizing Microbial Contamination is critical for preventing and solving these problems. In this study,...
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A survey of Microbial Contamination in aviation fuel from aircraft fuel tanks
Folia Microbiologica, 2019Co-Authors: Dong Hu, Shangshu Wu, Chengsong Ye, Wenfang Lin, Jie Zeng, Xi Li, Xin YuAbstract:Microbial Contamination poses a great threat to aviation system security through mechanisms such as microbiologically influenced corrosion (MIC), fuel filter clogging, and fuel deterioration. In this study, a survey of Microbial Contamination in aviation fuel obtained from aircraft fuel tanks was performed to test the relationship between Microbial Contamination and aircraft service life. The contaminating microorganisms were counted, isolated, identified, and subjected to preliminary characterization. A low risk of Microbial Contamination in the selected samples was confirmed, and there was no significant difference in the counts between culturable bacteria and fungi ( p > 0.05). Phylogenetic analysis tree indicated that the diversity of culturable microorganisms was rather low, with 17 bacterial isolates belonging to 13 genera and 12 fungal isolates belonging to 5 genera. No yeast was isolated. The growth characteristics of these isolates indicated that the aircraft fuel tanks harbored various microorganisms that were able to utilize the aviation fuel as a source of carbon and energy. Meanwhile, some isolates caused emulsification and produced acid. The conclusions of this study were that various hazardous microorganisms can root in aircraft aviation fuel tanks. There was no relationship between Microbial Contamination and aircraft service life ( p > 0.05), and continuous good maintenance suppressed Microbial proliferation.
Akira Kamiya - One of the best experts on this subject based on the ideXlab platform.
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Rapid Detection of Microbial Contamination in Intravenous Fluids by ATP-Based Monitoring System.
Japanese journal of infectious diseases, 2020Co-Authors: Shigeharu Oie, Kyoji Kouda, Hiroyuki Furukawa, Akira Kamiya, Hirofumi Yamasaki, Ryosuke TsurutaAbstract:In this study, we investigated four clinical cases of Microbial Contamination of in-use intravenous infusion fluid, detected by measuring "Adenosine triphosphate (ATP) + adenosine monophosphate (AMP)" ("ATP+AMP") levels. High "ATP+AMP" values correlate with Microbial Contamination, and by utilizing these values as indicator for Microbial Contamination possibility, we were able to rapidly detect the Contamination and recommend replacement of catheters and administration sets. In three out of four cases, changing the infusion fluid led to improvement in the condition of the patients. "ATP+AMP" levels can be used to confirm Microbial Contamination of in-use intravenous infusion fluids, as it is fast (several minites) and convenient to measure them.
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Microbial Contamination of Fruit and Vegetables and Their Disinfection
Biological & pharmaceutical bulletin, 2008Co-Authors: Shigeharu Oie, Hiroko Kiyonaga, Yuuki Matsuzaka, Kumiko Maeda, Yuki Masuda, Katsuko Tasaka, Sanae Aritomi, Akiko Yamashita, Akira KamiyaAbstract:We evaluated the Microbial Contamination of 17 types of vegetable and 10 types of fruit after 30-s washing with tap water with and without subsequent disinfection by 10-min immersion in 0.01% (100 ppm) sodium hypochlorite. The mean Microbial Contamination level of 9 types of leafy vegetable was 2.8 x 10(5) colony-forming units (CFU)/g after washing with water and 3.4 x 10(4) CFU/g after washing followed by disinfection. The mean Microbial Contamination level of 8 types of nonleafy vegetable was 3.4 x 10(4) CFU/g after washing with water and 1.0 x 10(4) CFU/g after washing followed by disinfection. The mean Microbial Contamination level of 10 types of unpeeled fleshy fruit was 9.3 x 10(3) CFU/g after washing with water and 1.3 x 10(3) CFU/g after washing followed by disinfection. The contaminants in vegetables and unpeeled fruit were similar after washing and after washing followed by disinfection, including Pseudomonas fluorescens and Pseudomonas aeruginosa. The Contamination did not markedly decrease even after disinfection with sodium hypochlorite. However, the flesh of each type of peeled fruit showed no or only low levels of Contamination (
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Microbial Contamination of In-use Lubricants for Non-touch Urethral Catheters in Intermittent Self-catheterization
Biological & pharmaceutical bulletin, 2000Co-Authors: Shigeharu Oie, Akira Kamiya, Toshihiko Seto, Akinobu Suga, Katsusuke NaitoAbstract:There are no reports on Microbial Contamination of repeatedly used lubricant (84-87% glycerin containing 0.02% benzalkonium chloride) for non-touch urethral catheters in intermittent self-catheterization. In this work, we evaluated Microbial Contamination of in-use lubricant and its prevention. Between September and December, 1996, Microbial Contamination and water activity of in-use lubricants in sheathed and lubricated non-touch chatheters connected to a tube used by 46 outpatients at our hospital was examined. Microbial Contamination was detected at 5 to 2.6×108 colony-forming units (CFU)/ml in 14 (30.4%) of 46 samples. With higher water activity of the lubricant (a higher dilution rate of the lubricant with water), a higher concentration of Microbial Contamination was observed. In 3 (21.4%) of the 14 patients using contaminated lubricant, urine samples showed the same Microbial species as those detected in the lubricant. To prevent Microbial Contamination of the lubricant, dilution of the lubricant with water, as a result of repeated use, should be avoided.
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Microbial Contamination of Antiseptic-Soaked Cotton Balls
Biological & pharmaceutical bulletin, 1997Co-Authors: Shigeharu Oie, Akira KamiyaAbstract:We investigated Microbial Contamination of in-use antiseptics at a hospital. No Microbial Contamination was observed in 70 samples of 0.02% benzalkonium chloride solution (500-ml volume), 70 samples of 1% titratable I2 povidone-iodine solution (250-ml volume), or 15 samples of 0.1% ethacridine lactate solution (500-ml volume) during use in reduced amounts. Nor was any Microbial Contamination observed in 70 samples of cotton balls soaked in 1% titratable I2 povidone-iodine solution in canisters or cotton gauze soaked in 70% (w/v) ethanol solution in canisters.However, among 70 samples of cotton balls soaked in 0.02% benzalkonium chloride solution in canisters, 6 (8.6%) were contaminated with 104 to 106 viable cells/ml. The Microbial species detected were glucose non-fermentative bacilli such as Alcaligenes xylosoxidans and Pseudomonas putida. The contaminants obtained from cotton balls soaked in 0.02% benzalkonium chloride solution did not proliferate in that solution or in distilled water but showed rapid growth in the cotton balls soaked in either of these liquids. These findings suggested that benzalkonium chloride solution tends to become contaminated when cotton balls are immersed. Therefore, cotton balls soaked in benzalkonium chloride solution are not recommended as an antiseptic. When no other choice is available, the cotton balls should be soaked in benzalkonium chloride solution at the time of usage.
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Microbial Contamination of antiseptics and disinfectants
American journal of infection control, 1996Co-Authors: Shigeharu Oie, Akira KamiyaAbstract:Abstract Background: There have been a number of reports on Microbial Contamination of antiseptics and disinfectants. At present, however, the necessity of measures to prevent Contamination do not seem to be fully appreciated. We investigated Microbial Contamination of antiseptics and disinfectants that are used in our hospital. Methods: Fifty-one samples of benzaldonium chloride and chlorhexidine gluconate that were being used in the hospital were examined. Viability of the contaminants detected in these samples was also tested in the agents. Then we examined measures to prevent Contamination of thes agents. Results: Microbial Contamination was detected at 10 2 to 10 7 CFU/ml in the following samples: 6 of 23 samples of cotton balls soaked in 0.02% benzalkonium chloride kept in a canister for antisepsis and disinfection (26.1%); 7 of 13 samples of 0.02% benzalkonium chloride or 0.02% chlorhexidine gluconate in an irrigation apparatus kept at 37° C for vaginal douching (53.8%); and 9 and 15 samples of 0.02% benzalkonium chloride or 0.05% chlorhexidine gluconate for storage of suction catheters in a plastic bottle (60%). The major contaminants were Burkholderia cepacia, Pseudomonas aeruginosa, Xanthomonas maltophilia , and Pseudomonas fluorescens . The first two organisms examined grew in the agents. After improvements in the handling of the antiseptics and disinfectants, no Microbial Contamination was observed. Conclusions: It is necessary to check Microbial Contamination of diluted benzalkonium chloride and diluted chlorhexidine gluconate that are in use. Such products are not recommended as antiseptics.