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1. A photometric pH assay for microplate bacterial cultures

Author:
Takao, Ayuko; Tomoyasu, Toshifumi; Tabata, Atsushi; Nagamune, Hideaki; Maeda, Nobuko
Source:
Journal of microbiological methods 2020 v.172 pp. 105910
ISSN:
0167-7012
Subject:
bacterial contamination,   etc   ; measuring devices; pH; photometry; risk;     Show all 5 Subjects
Abstract:
... A photometric pH assay for sugar-fermenting bacterial culture on a 96-well plate was developed. This assay can save time and effort in repeat handlings. Its use could decrease the risk of bacterial contamination in measurement devices and leakage into the environment. The assay's pH estimation range was pH 4.2–7.6. ...
DOI:
10.1016/j.mimet.2020.105910

2. Vitreous humor endogenous compounds analysis for post-mortem forensic investigation

Author:
Pigaiani, Nicola; Bertaso, Anna; De Palo, Elio Franco; Bortolotti, Federica; Tagliaro, Franco
Source:
Forensic science international 2020 v.310 pp. 110235
ISSN:
0379-0738
Subject:
bacterial contamination,   etc   ; aqueous solutions; autolysis; carbohydrates; death; electrolytes; forensic sciences; postmortem changes; prediction; proteins; toxicology;     Show all 11 Subjects
Abstract:
... The chemical and biochemical analysis of bodily fluids after death is an important thanatochemical approach to assess the cause and time since death. Vitreous humor (VH) has been used as a biofluid for forensic purposes since the 1960s. Due to its established relevance in toxicology, a literature review highlighting the use of VH with an emphasis on endogenous compounds has not yet been undertaken ...
DOI:
10.1016/j.forsciint.2020.110235

3. The surface modification of polyamide membranes using graphene oxide

Author:
Kowalik-Klimczak, Anna; Woskowicz, Ewa; Kacprzyńska-Gołacka, Joanna
Source:
Colloids and surfaces 2020 v.587 pp. 124281
ISSN:
0927-7757
Subject:
bacterial contamination,   etc   ; antibacterial properties; argon (noble gases); filtration; graphene oxide; oxygen; permeability; polyamides;     Show all 8 Subjects
Abstract:
... This paper presents the results of the surface modification of polyamide membranes using graphene oxide (GO) for reducing bacterial contamination. Prior to GO deposition on the surface of the membrane plasma treatment was used with a mixture of argon and oxygen (Ar-O₂) to activate the surface of the flat sheet membranes. As a result, the process conditions for plasma activation were selected, whic ...
DOI:
10.1016/j.colsurfa.2019.124281

4. Antifogging/Antibacterial Coatings Constructed by N-Hydroxyethylacrylamide and Quaternary Ammonium-Containing Copolymers

Author:
Bai, Shan; Li, Xiaohui; Zhao, Yunhui; Ren, Lixia; Yuan, Xiaoyan
Source:
ACS applied materials & interfaces 2020 v.12 no.10 pp. 12305-12316
ISSN:
1944-8252
Subject:
bacterial contamination,   etc   ; antibacterial properties; coatings; composite polymers; erythrocytes; hydrophilicity; medical equipment; mixing; quaternary ammonium compounds; surgery;     Show all 10 Subjects
Abstract:
... Endoscopic surgery has gained widespread applications in various clinical departments, and endoscope surfaces with antifogging and antibacterial properties are essential for elaborate procedures. In this work, novel antifogging/antibacterial coatings were developed from a cationic copolymer and a hydrophilic copolymer, polyhedral oligomeric silsesquioxane-poly(quaternary ammonium compound-co-2-ami ...
DOI:
10.1021/acsami.9b21871

5. Antibiotics and their alternatives in Artificial Breeding in livestock

Author:
Schulze, M.; Nitsche-Melkus, E.; Hensel, B.; Jung, M.; Jakop, U.
Source:
Animal reproduction science 2020 pp. 106284
ISSN:
0378-4320
Subject:
bacterial contamination,   etc   ; antibiotics; artificial insemination; bacteria; diagnostic techniques; hygiene; livestock; semen; semen extenders;     Show all 9 Subjects
Abstract:
... Antibiotics are mandatory components of semen extenders for the control of bacterial contamination and growth. The increasing rate of worldwide resistance to conventional antibiotics in semen preservation media requires the development of new antimicrobial alternatives. This review provides an update on this topic and also highlights the improvement of hygiene in Artificial Insemination centers in ...
DOI:
10.1016/j.anireprosci.2020.106284

6. Inactivation kinetics of beer spoilage bacteria (Lactobacillus brevis, Lactobacillus casei, and Pediococcus damnosus) during acid washing of brewing yeast

Author:
Munford, Allan R.G.; Chaves, Rafael D.; Sant’Ana, Anderson S.
Source:
Food microbiology 2020 v.91 pp. 103513
ISSN:
0740-0020
Subject:
bacterial contamination,   etc   ; Lactobacillus brevis; Lactobacillus casei; Pediococcus damnosus; brewers yeast; industry; pH; phosphoric acid; spoilage bacteria; viability;     Show all 10 Subjects
Abstract:
... This work aimed to estimate the inactivation kinetic parameters of four potential beer spoilage bacteria (Lactobacillus brevis DSM 6235, Lactobacillus casei ATCC 334, Pediococcus damnosus DSM 20289 and Pediococcus damnosus ATCC 29358) inoculated in brewing yeast submitted to acid washing with purposes of yeast recycle. The experiments were conducted at 4 °C in solutions with pH 1.5, pH 2, and pH 3 ...
DOI:
10.1016/j.fm.2020.103513

7. Enhanced removal of antibiotic resistance genes and mobile genetic elements during sewage sludge composting covered with a semi-permeable membrane

Author:
Cui, Peng; Bai, Yudan; Li, Xi; Peng, Zhiwei; Chen, Donghua; Wu, Zhubiao; Zhang, Peijie; Tan, Zhihan; Huang, Kailong; Chen, Zhi; Liao, Hanpeng; Zhou, Shungui
Source:
Journal of hazardous materials 2020 v.396 pp. 122738
ISSN:
0304-3894
Subject:
bacterial contamination,   etc   ; air; antibiotic resistance; antibiotic resistance genes; bacteria; composting; inhalation exposure; interspersed repetitive sequences; particulates; sewage sludge;     Show all 10 Subjects
Abstract:
... Transmission of antibiotic resistance genes (ARGs) via air media, such as particulate matter, has been intensively investigated due to human exposure through inhalation. However, whether particulate matter originating from the atmospheric environment of composting plants can impact ARG abundance during composting is unknown. Here, we investigated the effects of the atmospheric environment of compo ...
DOI:
10.1016/j.jhazmat.2020.122738

8. Water rinse and flowing steam to kill Campylobacter on broiler transport coop flooring

Author:
Berrang, M.E.; Meinersmann, R.J.; Cox, N.A.; Adams, E.S.
Source:
Food control 2020 v.114 pp. 107214
ISSN:
0956-7135
Subject:
bacterial contamination,   etc   ; Campylobacter; Escherichia coli; animal transport; birds; cages; coliform bacteria; containers; feces; floors; heat; intestines; slaughterhouses; steam; washing;     Show all 15 Subjects
Abstract:
... Broilers can carry Campylobacter in their intestine during live haul transport to the slaughter plant; feces from positive birds will contaminate the floor surface of transport containers. Such contamination can be transferred to previously negative broilers when transported in unwashed cages. We tested the use of a water rinse and 15 s steam heat to lessen the numbers of coliforms, Escherichia co ...
DOI:
10.1016/j.foodcont.2020.107214

9. Purification of canine albumin by heat denaturation in a plasma bag

Author:
Edwards, Thomas H.; Koenig, Amie; Thomas, LeNae; Sadik, Anjam; Edwards, James L.
Source:
Journal of veterinary emergency and critical care 2020 v.30 no.3 pp. 264-271
ISSN:
1479-3261
Subject:
bacterial contamination,   etc   ; albumins; bacteria; bags; blood plasma; blood proteins; denaturation; dogs; heat; neutralization; pH; pasteurization; refrigeration; stabilizers;     Show all 14 Subjects
Abstract:
... OBJECTIVE: To design and evaluate a method to purify canine albumin from fresh frozen plasma (FFP) or stored plasma (SP) in a manner that could be applied clinically. DESIGN: In vitro experimental study. SETTING: FDA licensed Blood Bank Laboratory and University biochemistry laboratory. ANIMALS: None. INTERVENTIONS: Using equipment that is typically found in veterinary blood banks, plasma bags wer ...
DOI:
10.1111/vec.12928

10. Microbial contamination of main contact surfaces of Automated Teller Machines from Metropolitan Area of Porto

Author:
Barbosa, Joana Inês Bastos; Da Conceição Pereira Albano, Helena; Silva, Fabiana Ferreira; Teixeira, Paula Cristina Maia
Source:
TheInternational journal of environmental studies 2020 v.77 no.2 pp. 208-221
ISSN:
1029-0400
Subject:
bacterial contamination,   etc   ; Enterobacteriaceae; Enterococcus; Staphylococcus; antibiotic resistance; antibiotics; automation; bacteria; equipment; hands; metropolitan areas; selective media; virulent strains; Portugal;     Show all 14 Subjects
Abstract:
... Automated Teller Machines (ATM) are likely to be contaminated with various microorganisms because of their contact with the hands of many users daily. The main objective of this study was to investigate ATMs as a potential source of bacterial contamination. This study was conducted in the Metropolitan Area of Porto, in which 50 swab samples were cultured on selective media. Some isolates were iden ...
DOI:
10.1080/00207233.2019.1674584

11. Symposium review: Recent advances in dairy food safety research: An overview of the National Dairy Council Listeria Consortium, industry identification, and funding of research gaps

Author:
Stubbs, T.A.; Galer, C.D.
Source:
Journal of dairy science 2020 v.103 no.3 pp. 2906-2908
ISSN:
0022-0302
Subject:
bacterial contamination,   etc   ; Listeria; dairies; dairy industry; dairy products; factories; food contamination; manufacturing; research support; risk; risk reduction; United States;     Show all 12 Subjects
Abstract:
... Consumers should have confidence that dairy foods are safe to eat. The Food Safety Committee of the Innovation Center for US Dairy (IC), created in 2010 to help processors collectively improve practices and reduce risks in dairy foods, is an industry-wide food safety collaboration that aims to protect the public through its mission to “Strengthen manufacturing practices in all dairy processing fac ...
DOI:
10.3168/jds.2019-17337

12. A method development for bacterial quantification and qualification in occupational exposure

Author:
Zendehdel, Rezvan; Montazer, Marzieh; Soleimani, Neda
Source:
Environmental monitoring and assessment 2020 v.192 no.2 pp. 82
ISSN:
0167-6369
Subject:
bacterial contamination,   etc   ; Fourier transform infrared spectroscopy; Gram-negative bacteria; Staphylococcus aureus; derivatization; models; occupational exposure; principal component analysis; qualitative analysis;     Show all 9 Subjects
Abstract:
... Bacterial contamination occurs in different occupational exposures. Although the level of colony-forming units in airborne samples reveals bacterial exposure, the bacterial origin is not specified. We applied Fourier transform infrared spectroscopy to investigate bacterial species in airborne samples and validated bacterial evaluation in an occupational exposure. As a pilot study, airborn of nurse ...
DOI:
10.1007/s10661-019-8050-7

13. The use of size-exclusion chromatography in the isolation of supercoiled minicircle DNA from Escherichia coli lysate

Author:
Almeida, A.M.; Eusébio, D.; Queiroz, J.A.; Sousa, F.; Sousa, A.
Source:
Journal of chromatography 2020 v.1609 pp. 460444
ISSN:
0021-9673
Subject:
bacterial contamination,   etc   ; Escherichia coli; bioactive properties; biomedical research; fractionation; gel chromatography; gene therapy; isolation techniques; plasmids; vaccination;     Show all 10 Subjects
Abstract:
... Minicircle DNA (mcDNA) is the new cutting-edge technology which researchers have been exploring for gene therapy and DNA vaccination. Although it presents enormous advantages in comparison to conventional plasmid DNA regarding bioactivity and safety, its challenging isolation from parental plasmid and miniplasmid has been setting back its launching in biomedical sciences. In this work, it is demon ...
DOI:
10.1016/j.chroma.2019.460444

14. Producer Response to Public Disclosure of Food‐Safety Information

Author:
Ollinger, Michael; Bovay, John
Source:
American journal of agricultural economics 2020 v.102 no.1 pp. 186-201
ISSN:
0002-9092
Subject:
bacterial contamination,   etc   ; Food Safety and Inspection Service; Salmonella; chicken carcasses; chicken industry; food contamination; meat packing plants; slaughter; United States;     Show all 9 Subjects
Abstract:
... Beginning in 2003, the USDA's Food Safety and Inspection Service (FSIS) put forth a series of Federal Register announcements regarding the public disclosure of results of tests for Salmonella in chicken carcasses. In particular, FSIS suggested in 2003 that it might disclose the identities of any slaughter or ground meat plant failing its Salmonella tests if test performance did not improve, and in ...
DOI:
10.1093/ajae/aaz031

15. Modulation of immune function in the bovine uterus peripartum

Author:
Pascottini, Osvaldo Bogado; LeBlanc, Stephen J.
Source:
Theriogenology 2020 v.150 pp. 193-200
ISSN:
0093-691X
Subject:
bacterial contamination,   etc   ; best management practices; body fat; cytokines; dairy cows; endometritis; endometrium; glucose; hypocalcemia; immune response; inflammation; ketosis; lipids; neutrophils; parturition; pathogens; postpartum period; risk;     Show all 18 Subjects
Abstract:
... There is a high risk of clinical or subclinical reproductive tract disease in the postpartum period in dairy cows. An integrated process of adaptive events should occur synchronously, including a robust but well-regulated immune response in the uterus. Failure of this process may result in reproductive tract inflammatory disease. Up to half of postpartum dairy cows are affected by metritis, purule ...
DOI:
10.1016/j.theriogenology.2020.01.042

16. An alternative strategy to detect bacterial contamination in milk and water: a newly designed electrochemical biosensor

Author:
Özcan, Ş. Maral; Sesal, N. Cenk; Şener, M. Kasım; Koca, Atıf
Source:
European food research & technology 2020 v.246 no.6 pp. 1317-1324
ISSN:
1438-2377
Subject:
bacterial contamination,   etc   ; Pseudomonas aeruginosa; biomarkers; biosensors; coatings; detection limit; food contamination; food pathogens; food research; glassy carbon electrode; homoserine; lactones; microbial activity; milk; zinc phthalocyanine;     Show all 15 Subjects
Abstract:
... The detection of acyl homoserine lactones (AHLs) can render their use as biomarkers and it may provide a chance to fight against food contamination and bacterial pathogens. For this purpose, in this study, an electrochemical biosensor was designed for the detection of AHLs to prevent harmful bacterial activities. The electrochemical biosensor was constructed by coating of zinc phthalocyanine beari ...
DOI:
10.1007/s00217-020-03491-2

17. Prevalence and characterization of Listeria monocytogenes in deboning and slicing areas of Spanish dry-cured ham processing

Author:
Alía, Alberto; Andrade, María J.; Rodríguez, Alicia; Martín, Irene; Pérez-Baltar, Aida; Medina, Margarita; Córdoba, Juan J.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2020 v.128 pp. 109498
ISSN:
0023-6438
Subject:
bacterial contamination,   etc   ; Listeria monocytogenes; boning; cross contamination; cured meats; disinfection; ham; microbial detection; pathogen identification; pathogens; seasonal variation; slicing; species diversity;     Show all 13 Subjects
Abstract:
... The Listeriamonocytogenes diversity throughout deboning, compressing and slicing of Spanish dry-cured ham processing among and within 6 production plants after cleaning and disinfection in two different seasons (autumn/winter and spring/summer) was evaluated in this work. L. monocytogenes isolates (n = 66), collected from deboning area (72.7%) and compressing and slicing areas (27.3%), were seroty ...
DOI:
10.1016/j.lwt.2020.109498

18. Impact of hygiene on bacterial contamination in extended boar semen: An eight-year retrospective study of 28 European AI centers

Author:
Nitsche-Melkus, E.; Bortfeldt, R.; Jung, M.; Schulze, M.
Source:
Theriogenology 2020 v.146 pp. 133-139
ISSN:
0093-691X
Subject:
bacterial contamination,   etc   ; antibiotic resistance; audits; bacteria; boars; critical control points; gentamicin; hygiene; lids; microbial load; odds ratio; quality control; regression analysis; retrospective studies; risk; semen; semen extenders; variance;     Show all 18 Subjects
Abstract:
... Antibiotic agents such as gentamicin represent essential components of semen extenders in order to reduce bacterial contamination. But antibiotic resistance increases and AI centers start utilizing antibiotic agents which are more potent. Therefore, a shift to preventing bacterial contamination has to take place. In this study, we could demonstrate that hygiene is a tool capable of reducing bacter ...
DOI:
10.1016/j.theriogenology.2019.11.031

19. Cooperated biotransformation of ginsenoside extracts into ginsenoside 20(S)‐Rg3 by three thermostable glycosidases

Author:
Zhang, S.; Luo, J.; Xie, J.; Wang, Z.; Xiao, W.; Zhao, L.
Source:
Journal of applied microbiology 2020 v.128 no.3 pp. 721-734
ISSN:
1364-5072
Subject:
bacterial contamination,   etc   ; Thermotoga; beta-glucosidase; biotransformation; catalysts; ginsenosides; glucose; industrial applications; medicinal properties; pH; solubility; solvents; temperature; thermal stability; thermophilic bacteria; thermostable enzymes;     Show all 16 Subjects
Abstract:
... AIMS: The aim of this work was to transform ginsenoside extract into the pharmacologically active minor ginsenoside 20(S)‐Rg3 by three thermostable glycosidases. METHODS AND RESULTS: The GH1 thermostable beta‐glucosidase Tpebgl1 from Thermotoga petrophlia was found to have the ability to convert ginsenosides Rb1 and Rb2. Its properties concerning ginsenoside conversion were systematically investig ...
DOI:
10.1111/jam.14513

20. Characterization of microbial communities in ethanol biorefineries

Author:
Firmino, Fernanda C.; Porcellato, Davide; Cox, Madison; Suen, Garret; Broadbent, Jeffery R.; Steele, James L.
Source:
Journal of industrial microbiology & biotechnology 2020 v.47 no.2 pp. 183-195
ISSN:
1367-5435
Subject:
bacterial contamination,   etc   ; Lactobacillus; biorefining; carbon footprint; ecological succession; ethanol; fermentation; metagenomics; microbial communities; microbiome; ribosomal RNA; sequence analysis; Midwestern United States;     Show all 13 Subjects
Abstract:
... Bacterial contamination of corn-based ethanol biorefineries can reduce their efficiency and hence increase their carbon footprint. To enhance our understanding of these bacterial contaminants, we temporally sampled four biorefineries in the Midwestern USA that suffered from chronic contamination and characterized their microbiomes using both 16S rRNA sequencing and shotgun metagenomics. These micr ...
DOI:
10.1007/s10295-019-02254-7