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Environmental Hazard of Polypropylene from Disposable Face Masks Linked to the COVID-19 Pandemic and Its Possible Mitigation Techniques through a Green Approach. J CHEM-NY 2022. [DOI: 10.1155/2022/9402236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The COVID-19 outbreak again underlined plastic items’ importance in our daily lives. The public has widely utilized disposable face masks constructed of polypropylene polymer materials as effective and inexpensive personal protective equipment (PPE) to inhibit virus transmission. The consequences of this have resulted in millions of tons of plastic garbage littering the environment due to inappropriate disposal and mismanagement. Surgical masks are among them, and this study aimed to assess the biodegrading efficiency of disposable face masks using Pseudomonas aeruginosa VJ 1. This work used a bacterial strain, Pseudomonas aeruginosa VJ 1, obtained from sewage water-contaminated surface soil in Tiruchirappalli, India, to investigate the biodegradation of polypropylene (PP) face masks. The mask pieces were incubated with Pseudomonas aeruginosa VJ 1 culture in three different solid and liquid media for 30 days at 37°C. Surface changes and variations in the intensity of functional groups and carbonyl index variations were confirmed using Field Emission Scanning Electron Microscopy (FE-SEM) and Fourier Transform Infrared Spectroscopy (FTIR) analysis to ensure microbial degradation (up to 5.37% weight reduction of PP films within 30 days). These findings show that Pseudomonas aeruginosa VJ 1 could be a good choice for biodegrading PP masks without harming our health or the environment. There is a need for a novel solution for the degradation of PP. The methods and strain presented here reveal the potential biodegrading agents of PP masks.
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Lim GM, Kim JK, Kim EJ, Lee CS, Kim W, Kim BG, Jeong HJ. Generation of a recombinant antibody for sensitive detection of Pseudomonas aeruginosa. BMC Biotechnol 2022; 22:21. [PMID: 35927722 PMCID: PMC9354424 DOI: 10.1186/s12896-022-00751-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/29/2022] [Indexed: 11/25/2022] Open
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a major pathogen that causes nosocomial infections and often exhibits antibiotic resistance. Therefore, the development of an accurate method for detecting P. aeruginosa is required to control P. aeruginosa-related outbreaks. In this study, we established an enzyme-linked immunosorbent assay method for the sensitive detection of three P. aeruginosa strains, UCBPP PA14, ATCC 27853, and multidrug-resistant ATCC BAA-2108. We produced a recombinant antibody (rAb) against P. aeruginosa V‐antigen (PcrV), which is a needle tip protein of the type III secretion system of P. aeruginosa using mammalian cells with high yield and purity, and confirmed its P. aeruginosa binding efficiency. The rAb was paired with commercial anti-P. aeruginosa Ab for a sandwich ELISA, resulting in an antigen-concentration-dependent response with a limit of detection value of 230 CFU/mL. These results suggest that the rAb produced herein can be used for the sensitive detection of P. aeruginosa with a wide range of applications in clinical diagnosis and point-of-care testing.
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Affiliation(s)
- Gyu-Min Lim
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Joo-Kyung Kim
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Eun-Jung Kim
- BioMAX/N-Bio Institute, Institute of Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chang-Soo Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Wooseong Kim
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Byung-Gee Kim
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea. .,BioMAX/N-Bio Institute, Institute of Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Hee-Jin Jeong
- Department of Biological and Chemical Engineering, Hongik University, Sejong, 30016, Republic of Korea.
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Quality Control Method for Beer-Spoiler Detection Media Using BioBall as the Microbiological Reference Material. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2011-1111-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tang Y, Ali Z, Zou J, Jin G, Zhu J, Yang J, Dai J. Detection methods for Pseudomonas aeruginosa: history and future perspective. RSC Adv 2017. [DOI: 10.1039/c7ra09064a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The current review summarized and analyzed the development of detection techniques forPseudomonas aeruginosaover the past 50 years.
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Affiliation(s)
- Yongjun Tang
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Zeeshan Ali
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jun Zou
- School of Chemistry and Chemical Engineering
- Hunan Institute of Engineering
- Xiangtan 411104
- China
| | - Gang Jin
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Junchen Zhu
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jian Yang
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jianguo Dai
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
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Skariyachan S, Megha M, Kini MN, Mukund KM, Rizvi A, Vasist K. Selection and screening of microbial consortia for efficient and ecofriendly degradation of plastic garbage collected from urban and rural areas of Bangalore, India. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:4174. [PMID: 25504187 DOI: 10.1007/s10661-014-4174-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Accepted: 11/17/2014] [Indexed: 06/04/2023]
Abstract
Industrialization and urbanization have led to massive accumulation of plastic garbage all over India. The persistence of plastic in soil and aquatic environment has become ecological threat to the metropolitan city such as Bangalore, India. Present study investigates an ecofriendly, efficient and cost-effective approach for plastic waste management by the screening of novel microbial consortia which are capable of degrading plastic polymers. Plastic-contaminated soil and water samples were collected from six hot spots of urban and rural areas of Bangalore. The plastic-degrading bacteria were enriched, and degradation ability was determined by zone of clearance method. The percentage of polymer degradation was initially monitored by weight loss method, and the main isolates were characterized by standard microbiology protocols. These isolates were used to form microbial consortia, and the degradation efficiency of the consortia was compared with individual isolate and known strains obtained from the Microbial Type Culture Collection (MTCC) and Gene Bank, India. One of the main enzymes responsible for polymer degradation was identified, and the biodegradation mechanism was hypothesized by bioinformatics studies. From this study, it is evident that the bacteria utilized the plastic polymer as a sole source of carbon and showed 20-50% weight reduction over a period of 120 days. The two main bacteria responsible for the degradation were microbiologically characterized to be Pseudomonas spp. These bacteria could grow optimally at 37 °C in pH 9.0 and showed 35-40% of plastic weight reduction over 120 days. These isolates were showed better degradation ability than known strains from MTCC. The current study further revealed that the microbial consortia formulated by combining Psuedomonas spp. showed 40 plastic weight reduction over a period of 90 days. Further, extracellular lipase, one of the main enzymes responsible for polymer degradation, was identified. The computational docking studies suggested that polyethylene glycol and polystyrene present in the plastics might have good interaction towards the microbial lipase with stable binding and interacting forces which probably could be one of the reasons for the degradative mechanisms.
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Affiliation(s)
- Sinosh Skariyachan
- R & D Centre, Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, Karnataka, 560 078, India,
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Weiser R, Donoghue D, Weightman A, Mahenthiralingam E. Evaluation of five selective media for the detection of Pseudomonas aeruginosa using a strain panel from clinical, environmental and industrial sources. J Microbiol Methods 2014; 99:8-14. [DOI: 10.1016/j.mimet.2014.01.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/17/2014] [Accepted: 01/17/2014] [Indexed: 12/27/2022]
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Pseudomonas sihuiensis sp. nov., isolated from a forest soil in South China. Antonie van Leeuwenhoek 2014; 105:781-90. [DOI: 10.1007/s10482-014-0134-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 01/31/2014] [Indexed: 10/25/2022]
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Szita G, Gyenes M, Soós L, Rétfalvi T, Békési L, Csikó G, Bernáth S. Detection of Pseudomonas aeruginosa in water samples using a novel synthetic medium and impedimetric technology. Lett Appl Microbiol 2007; 45:42-6. [PMID: 17594459 DOI: 10.1111/j.1472-765x.2007.02145.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS To investigate whether the use of a novel synthetic medium in conjunction with impedimetric technology could provide a rapid and automated detection of Pseudomonas aeruginosa in water samples. METHODS AND RESULTS A selective synthetic medium (Z-broth) in which the only carbon and nitrogen source is acetamide was applied in direct impedimetric examination for the selective isolation of P. aeruginosa. A total of 1036 tap-water, well-water, swimming-pool water and dialysis water samples were investigated, and any P. aeruginosa contamination was detected in 7-24 h. Neither false-negative nor false-positive results were observed. CONCLUSIONS The results of the present evaluation demonstrate that impedance measurement with the use of Z-broth is suitable for the rapid and automatic detection of P. aeruginosa in water. SIGNIFICANCE AND IMPACT OF THE STUDY The main advantages of the method: 240 samples can be examined in one step, the procedure is fully automated, the results are obtained quickly and the labour and media requirements are low.
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Affiliation(s)
- G Szita
- Department of Food Hygiene, Faculty of Veterinary Science, Szent István University, Budapest, Hungary.
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Szita G, Schmidt E, Bernáth S, Faludi G, Fábián A, Tabajdi V, Kiss R. A synthetic culture medium evaluated for detection of coliform bacteria in tomato paprika. Food Microbiol 2003. [DOI: 10.1016/s0740-0020(03)00017-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Leuschner RGK, Bew J, Bertin G. Validation of an official control method for enumeration of authorised probiotic yeast in animal feed. Syst Appl Microbiol 2003; 26:147-53. [PMID: 12747423 DOI: 10.1078/072320203322337443] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An official control method in the framework of Council Directive 70/524/EEC for probiotic yeast used as feed additives was validated in a collaborative study by twenty laboratories in 12 European Countries. A pour plate method following ISO 7954 using chloramphenicol glucose yeast extract (CGYE) and a plate count method using CHROMagar Candida were used. Precision data in terms of repeatability (r) and reproducibility (R) of the method using different feeding stuffs and three inoculation levels were determined. Yeast was present in the samples in mixtures with other probiotic feed additives at a lower, a higher concentration or not present. The enumeration of yeast on CGYE agar showed for the lower and higher concentration a RSD(r) of 2.4-4.9% and a RSD(R) of 7.7-8%, respectively and was preferred by the majority of labs. CHROMagar Candida had a RSD(r) of 1.9-2.8% and a RSD(R) of 1.9-5.9%. For routine analysis the use of the pour plate technique is recommended. CHROMagar Candida can be used for confirmation of the species Saccharomyces cerevisiae. The methods are not recommended for mineral feeds. The results from this study are intended for consideration for adoption as CEN and ISO standards.
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Affiliation(s)
- Renata G K Leuschner
- Central Science Laboratory, Department for Environment, Food and Rural Affairs, Sand Hutton, York, UK.
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Leuschner RGK, Bew J, Domig KJ, Kneifel W. A collaborative study of a method for enumeration of probiotic enterococci in animal feed. J Appl Microbiol 2003; 93:781-6. [PMID: 12392523 DOI: 10.1046/j.1365-2672.2002.01755.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS Validation of an enumeration method to be used as an official control method in the framework of Council Directive 70/524/EEC for probiotic enterococci used as feed additives. METHODS AND RESULTS Twenty laboratories in 12 European countries carried out a collaborative study. A plate count method using bile esculin azide (BEA) agar was used. Precision data in terms of repeatability (r) and reproducibility (R) of the method using different feeding stuffs and three inoculation levels were determined. Enterococci were present in the samples as a single component or in mixtures with other probiotic feed additives. The enumeration of enterococci on BEA agar showed a relative standard deviation (RSD)r of 1.5-3.6% and an RSD(R) between 2.9 and 7.4%. BEA agar was selective for enterococci in the presence of other probiotic micro-organisms such as pediococci, lactobacilli and yeast. CONCLUSIONS For routine analysis of viable enterococci concentrations in feeding stuffs, the use of BEA is recommended. This methodology is not applicable for mineral feeds. SIGNIFICANCE AND IMPACT OF THE STUDY An official control method for enumeration of authorized probiotic enterococci in feeding stuffs was validated. The results are intended for consideration for adoption as CEN and ISO standards.
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Affiliation(s)
- R G K Leuschner
- Central Science Laboratory, Department for Environment, Food and Rural Affairs, York, UK.
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A collaborative study of a method for the enumeration of probiotic lactobacilli in animal feed. Food Microbiol 2003. [DOI: 10.1016/s0740-0020(02)00103-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Langton SD, Chevennement R, Nagelkerke N, Lombard B. Analysing collaborative trials for qualitative microbiological methods: accordance and concordance. Int J Food Microbiol 2002; 79:175-81. [PMID: 12371652 DOI: 10.1016/s0168-1605(02)00107-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In qualitative (detection) food microbiology, the usual measures of repeatability and reproducibility are inapplicable. For such studies, we introduce two new measures: accordance for within laboratory agreement and concordance for between laboratory agreement, and discuss their properties. These measures are based on the probability of finding the same test results for identical test materials within and between laboratories, respectively. The concordance odds ratio is introduced to present their relationship. A method to test whether accordance differs from concordance is discussed.
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Affiliation(s)
- S D Langton
- DEFRA Central Science Laboratory, Sand Hutton, York, UK.
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