11,169 results match your criteria bacterial mixture

Synergistic effects of Cu-doped ZnO nanoantibiotic against Gram-positive bacterial strains.

PLoS One 2021 14;16(5):e0251082. Epub 2021 May 14.

Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan.

A viable hydrothermal technique has been explored for the synthesis of copper doped Zinc oxide nanoparticles (Cu-doped ZnO-NPs) based on the precursor's mixture of Copper-II chloride dihydrate (CuCl2.2H2O), Zinc chloride (ZnCl2), and potassium hydroxide (KOH). X-ray diffraction (XRD) reported the hexagonal wurtzite structure of the synthesized Cu-doped ZnO-NPs. Read More

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Biodegradation of azo dye-containing wastewater by activated sludge: a critical review.

World J Microbiol Biotechnol 2021 May 13;37(6):101. Epub 2021 May 13.

Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-900, Brazil.

The effluent from the textile industry is a complex mixture of recalcitrant molecules that can harm the environment and human health. Biological treatments are usually applied for this wastewater, particularly activated sludge, due to its high efficiency, and low implementation and operation costs. However, the activated sludge microbiome is rarely well-known. Read More

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Histopathological changes in Oreochromis mossambicus (Peters, 1852) ovaries after a chronic exposure to a mixture of the HIV drug nevirapine and the antibiotics sulfamethoxazole and trimethoprim.

Chemosphere 2021 Jul 9;274:129900. Epub 2021 Feb 9.

Department of Zoology, PO Box 524, Auckland Park, University of Johannesburg, 2006, South Africa. Electronic address:

The burden of the human immunodeficiency virus and acquired immunodeficiency syndrome (HIV/AIDS) infection has transformed the African continent into a major consumer of antiretrovirals (ARVs) drugs. In addition to HIV burden, the African continent has also a high incidence of tuberculosis (TB) and has been experiencing recurring outbreaks of several other viral, bacterial, and parasitic epidemic diseases. The novel severe acute respiratory syndrome coronavirus 2 (SARS-COV-2 or Covid-19) pandemic outbreak is adding to the continent's infectious diseases burden as experts are predicting that it will be here for a long time. Read More

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Maillard conjugates of whey protein isolate-xylooligosaccharides for the microencapsulation of : protective effects and stability during spray drying, storage and gastrointestinal digestion.

Food Funct 2021 May;12(9):4034-4045

State Key Laboratory of Food Science and Technology, Nanchang University, Jiangxi 330047, China.

The Maillard reaction products (MRPs) of whey protein isolate (WPI) and xylooligosaccharides (XOS) were prepared by a moist heat method for use as protectants to encapsulate Lactobacillus rhamnosus via spray drying. The protective effects of MRPs on bacterial cells during drying, storage, and in vitro digestion were explored. FTIR results indicated that MRPs were successfully prepared. Read More

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Gut microbiota modulation and anti-inflammatory properties of mixed lactobacilli in dextran sodium sulfate-induced colitis in mice.

Food Funct 2021 May 11. Epub 2021 May 11.

Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China. and Food College, Northeast Agricultural University, Harbin 150030, China.

Correlations between gut microbiota activities and inflammatory bowel disease (IBD) treatment are gaining research interest. In our previous study, Lactobacillus acidophilus KLDS 1.0901, Lactobacillus helveticus KLDS 1. Read More

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Bacterial profile and antimicrobial susceptibility patterns of isolates among patients diagnosed with surgical site infection at a tertiary teaching hospital in Ethiopia: a prospective cohort study.

Ann Clin Microbiol Antimicrob 2021 May 10;20(1):33. Epub 2021 May 10.

Department of Clinical Pharmacy, School of Pharmacy, Institute of Health, Jimma University, Jimma, Ethiopia.

Background: Globally, surgical site infections are the most reported healthcare-associated infection and common surgical complication. In developing countries such as Ethiopia, there is a paucity of published reports on the microbiologic profile and resistance patterns of an isolates.

Objective: This study aimed at assessing the bacterial profile and antimicrobial susceptibility patterns of isolates among patients diagnosed with surgical site infection at Jimma Medical Center in Ethiopia. Read More

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Structural Characterization of Natural Yeast Phosphatidylcholine and Bacterial Phosphatidylglycerol Lipid Multilayers by Neutron Diffraction.

Front Chem 2021 18;9:628186. Epub 2021 Mar 18.

Institut Laue Langevin, Grenoble, France.

Eukaryotic and prokaryotic cell membranes are difficult to characterize directly with biophysical methods. Membrane model systems, that include fewer molecular species, are therefore often used to reproduce their fundamental chemical and physical properties. In this context, natural lipid mixtures directly extracted from cells are a valuable resource to produce advanced models of biological membranes for biophysical investigations and for the development of drug testing platforms. Read More

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Production of bioconcrete with improved durability properties using Alkaliphilic Egyptian bacteria.

3 Biotech 2021 May 22;11(5):231. Epub 2021 Apr 22.

Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute (GEBRI), University of Sadat City, Sadat, 22857/79 Egypt.

Microbial-based self-healing of concrete represents innovative technology for improving micro-crack sealing. Microbial bioactivity can induce calcite-precipitation in concrete, which seals micro-cracks. In this respect, two Egyptian bacterial isolates were selected and identified, as (Bs) and (Bm) using MALDI-TOF/MS-Biotyper. Read More

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Selective pressure of biphenyl/polychlorinated biphenyls on the formation of aerobic bacterial associations and their biodegradative potential.

Folia Microbiol (Praha) 2021 May 8. Epub 2021 May 8.

Laboratory of Molecular Microbiology and Biotechnology, Institute of Ecology and Genetics of Microorganism UB RAS, 13 Golev st, Perm, 614081, Russia.

Unique bacterial associations were formed in the polluted soils from territory of the industrial factories Open Joint Stock Company "The Middle Volga Chemical Plant," Chapaevsk, Russia and Open Joint Stock Company "Lubricant Producing Plant," Perm, Russia. This study evaluates the influence of the biphenyl/polychlorinated biphenyls (PCB) on the formation of aerobic bacterial associations and their biodegradative potential. Enrichment cultivation of the soil samples from the territories of these industrial factories with PCB (commercial mixture Sovol) was lead for forming aerobic bacterial enrichment cultures showing a unique composition. Read More

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Bioelectricity production from sweat-activated germination of bacterial endospores.

Biosens Bioelectron 2021 May 3;186:113293. Epub 2021 May 3.

Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, NY, 13902, USA; Center for Research in Advanced Sensing Technologies & Environmental Sustainability (CREATES), State University of New York at Binghamton, Binghamton, NY, 13902, USA. Electronic address:

A microbial fuel cell is created that uses a bacterium's natural ability to revive from dormancy to provide on-demand power for next-generation wearable applications. In adverse conditions, Bacillus subtilis responds by becoming endospores that serve as a dormant biocatalyst embedded in a skin-mountable paper-based microbial fuel cell. When activated by nutrient-rich human sweat, the germinating bacteria produce enough electricity to operate small devices, such as the calculator that we operated to test our methodology. Read More

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Syntheses and Antimicrobial Activities of Ogipeptin Derivatives.

Bioorg Med Chem Lett 2021 May 5:128093. Epub 2021 May 5.

School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan. Electronic address:

Novel cyclic peptide derivatives based on ogipeptins A, B, C, and D were synthesized. Starting with a mixture of ogipeptins A-D, a practical four-step synthetic procedure was followed to prepare novel derivatives with various kinds of acyl side chains. Among the 45 new synthetic derivatives identified, the antibacterial activities of compounds 8-3 and 8-38 were comparable with those of ogipeptin A. Read More

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A novel encapsulation of Streptomyces fulvissimus Uts22 by spray drying and its biocontrol efficiency against Gaeumannomyces graminis, the causal agent of take-all disease in wheat.

Pest Manag Sci 2021 May 7. Epub 2021 May 7.

Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Iran.

Background: Wheat is a valuable food source that is exposed to many diseases that reduce its quantity and quality. One of the most important diseases affecting wheat is take-all, caused by Gaeumannomyces graminis var. tritici. Read More

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Integrin α4β1/VCAM-1 Interaction Evokes Dynamic Cell Aggregation Between Immune Cells and Human Lung Microvascular Endothelial Cells at Infectious Hemolysis.

Front Pharmacol 2021 20;12:653143. Epub 2021 Apr 20.

Department of Hepatopathy, Hunan Children's Hospital, Changsha, China.

Bacterial and viral infection is a common cause of pneumonia, respiratory failure, and even acute respiratory distress syndrome. Increasing evidence indicates that red blood cells (RBCs) may contribute to immune response and inflammation. However, the precise molecular mechanisms that link RBC and hemolysis to the development and progression of inflammatory pathologies are not entirely understood. Read More

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Isolation of Bacillus cereus from Soft Soybean Curd, and Kinetic Behavior of the Isolates under Changing Temperature.

J Food Prot 2021 May 6. Epub 2021 May 6.

Sookmyung Women's University Hyochangwon-gil 52 KOREA, REPUBLIC OF Seoul 4310 n/a.

This study isolated Bacillus cereus from soft soybean curds and developed a dynamic model to describe the kinetic behavior of B. cereus isolates during transfer and storage. B. Read More

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Clinical study of herbal mixture "Diding Oral Medicine" as an alternative to preventative antibiotics in perioperative hemorrhoids: A CARE-compliant article.

Medicine (Baltimore) 2021 May;100(18):e25661

Department of Science and Education, Zigong Hospital of Traditional Chinese Medicine, Zigong, China.

Abstract: To study the clinical effects of Diding Oral Medicine as an alternative to preventative antibiotics in perioperative hemorrhoids.From August 2017 to February 2018, a total of 214 patients who were treated with external exfoliation and internal ligation of mixed hemorrhoids in our hospital were divided into the control group and experimental group by way of stratified random (107 cases in each group). Patients in the control group were given antibiotics preventatively before operation, while patients in the experimental group took Diding Oral Medicine before operation, and the white blood cell count, neutrophil count, wound recovery, pain score, anal bulge score, and pathogen culture of wound secretions were compared between the 2 groups. Read More

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Efficient Degradation of 2-Mercaptobenzothiazole and Other Emerging Pollutants by Recombinant Bacterial Dye-Decolorizing Peroxidases.

Biomolecules 2021 Apr 29;11(5). Epub 2021 Apr 29.

Department of Chemistry, College of Arts and Sciences, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, United Arab Emirates.

In recent years, concerns are being raised about the potential harmful effects of emerging pollutants (EPs) on human and aquatic lives. Extensive research is being conducted on developing efficient remediation strategies to target this new class of toxic pollutants. Studies focused on biological (enzyme-based) methods have shown potential as greener and possibly more economical alternatives to other treatment approaches, such as chemical methods. Read More

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Smells Like Teen Spirit-A Model to Generate Laundry-Associated Malodour In Vitro.

Microorganisms 2021 Apr 30;9(5). Epub 2021 Apr 30.

Faculty of Life Sciences, Rhine-Waal University of Applied Sciences, 47533 Kleve, Germany.

Although malodour formation on textiles and in washing machines has been reported to be a very relevant problem in domestic laundry, the processes leading to bad odours have not been studied intensively. In particular, the smell often described as "wet-and-dirty-dustcloth-like malodour" had not been reproduced previously. We developed a lab model based on a bacterial mixture of , , and , which can produce this odour type and which might allow the detailed investigation of this problem and the development of counteractions. Read More

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Exposure to a mixture of cigarette smoke carcinogens disturbs gut microbiota and influences metabolic homeostasis in A/J mice.

Chem Biol Interact 2021 Apr 30:109496. Epub 2021 Apr 30.

School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750004, China; School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China. Electronic address:

An increased risk of developing lung cancer has been associated with exposure to cigarette smoking carcinogens and alteration in the gut microbiota. However, there is limited understanding about the impact of exposure to NNK and BaP, the two important components of cigarette smoke carcinogens, on gut microbiota in lung cancer. The present study characterized the influence of exposure to a mixture of NNK plus BaP on lung cancer, feces metabolite composition, and gut microbiota in the A/J mice. Read More

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Chemo-metrically formulated consortium with selectively screened bacterial strains for ameliorated biotransformation and detoxification of 1,4-dioxane.

J Hazard Mater 2021 Jul 17;413:125456. Epub 2021 Feb 17.

Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad 201 002, Uttar Pradesh, India. Electronic address:

The biotransformation of 1,4-dioxane, a endrocrine disrupting chemical was achieved using different bacterial strains and their consortia. Three different bacterial isolates were screened on their ability to grow with 50 mg/L 1,4-dioxane in the basal mineral medium. Then the isolates were tested for its efficiency to biotransform 1000 mg/L 1,4-dioxane at varying period of time; 24-120 h. Read More

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Isolation and identification of a human intestinal bacterium capable of daidzein conversion.

FEMS Microbiol Lett 2021 May;368(8)

College of Food Science, South China Agricultural University, Guangzhou, China.

Equol, which produced from daidzein (one of the principal isoflavones), is recognized to be the most resultful in stimulating an estrogenic and antioxidant response. The daidzein transformation was studied during fermentation of five growth media inoculated with feces from a healthy human, and a daidzein conversion strain was isolated. To enrich the bacterial population involved in daidzein metabolism in a complex mixture, fecal samples were treated with antibiotics. Read More

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Impact of pesticide/fertilizer mixtures on the rhizosphere microbial community of field-grown sugarcane.

3 Biotech 2021 May 10;11(5):210. Epub 2021 Apr 10.

Institute of Bioengineering, Guangdong Academy of Sciences, No.10 Shiliugang Road, Haizhu District, Guangzhou, 510316 Guangdong China.

The rhizosphere microbial community is important for plant health and is shaped by numerous environmental factors. This study aimed to unravel the effects of a pesticide/fertilizer mixture on the soil rhizosphere microbiome of field-grown sugarcane. A field trial on sugarcane was conducted in Zhanjian City, Guangdong Province, China, and soil samples from the rhizosphere were collected after clothianidin pesticide and/or organic fertilizer treatments. Read More

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Topical Application of Ozonated Oils for the Treatment of MRSA Skin Infection in an Animal Model of Infected Ulcer.

Biology (Basel) 2021 Apr 26;10(5). Epub 2021 Apr 26.

Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal.

Diabetic foot ulcers are a common cause of morbidity in diabetic patients. One of the main pathogens found in these ulcers is methicillin-resistant (MRSA). MRSA often carries resistance to several classes of antibiotics and their infections are becoming harder to treat. Read More

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Direct and Indirect Bactericidal Effects of Cold Atmospheric-Pressure Microplasma and Plasma Jet.

Molecules 2021 Apr 26;26(9). Epub 2021 Apr 26.

Graduate School of Science and Technology, Shizuoka University, Hamamatsu 832-8561, Japan.

The direct and indirect bactericidal effects of dielectric barrier discharge (DBD) cold atmospheric-pressure microplasma in an air and plasma jet generated in an argon-oxygen gas mixture was investigated on and . An AC power supply was used to generate plasma at relatively low discharge voltages (0.9-2. Read More

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Total and Metabolically Active Microbial Community of Aerobic Granular Sludge Systems Operated in Sequential Batch Reactors: Effect of Pharmaceutical Compounds.

Toxics 2021 Apr 23;9(5). Epub 2021 Apr 23.

Faculty of Pharmacy, University of Granada, Campus de Cartuja, s/n, 18071 Granada, Spain.

Two aerobic granular sludge (AGS) sequential batch reactors were operated at a mild (15 °C) temperature for 180 days. One of those bioreactors was exposed to a mixture of diclofenac, naproxen, trimethoprim, and carbamazepine. The AGS system, operating under pressure from emerging contaminants, showed a decrease in COD, BOD, and TN removal capacity, mainly observed during the first 100 days, in comparison with the removal ratios detected in the control bioreactor. Read More

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and evaluation of antibacterial and anti-biofilm properties of five ethnomedicinal plants against oral bacteria by TEM.

Avicenna J Phytomed 2021 Mar-Apr;11(2):180-189

Department of Biology, Arak Branch, Islamic Azad University, Arak, Iran.

Objective: The aim of the present study was to investigate antibacterial and antibiofilm activity of a few medicinal plants against oral bacteria.

Materials And Methods: , , and were extracted. Isolates from oral cavity were identified by microbiological and molecular methods. Read More

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Controlling morphology evolution of titanium oxide-gold nanourchin for photocatalytic degradation of dyes and photoinactivation of bacteria in the infected wound.

J Colloid Interface Sci 2021 Apr 20;598:260-273. Epub 2021 Apr 20.

Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan. Electronic address:

We report a one-pot, room-temperature, morphology-controlled synthesis of titanium oxide (TiO)-gold nanocomposites (TiO-Au NCs) using HAuCl and TiCl as precursors, and catechin as reducing agent. TiO-Au NCs have a range of morphologies from star-like to urchin-like shape depending on the concentration of TiCl in the reaction mixture. The urchin-shaped TiO-Au NCs exhibited excellent photocatalytic activity toward dye degradation due to strong light absorption, plasmon-induced excitation, high conductivity of the gold, and reduced hole-electron pair recombination. Read More

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Structural elucidation upon binding of antimicrobial peptides into binary mixed lipid monolayers mimicking bacterial membranes.

J Colloid Interface Sci 2021 Apr 20;598:193-205. Epub 2021 Apr 20.

Biological Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Schuster Building, Manchester M13 9PL, UK. Electronic address:

Hypothesis: Antimicrobial peptides (AMPs) kill microorganisms by causing structural damage to bacterial membranes. Different microorganisms often require a different type and concentration of an AMP to achieve full microbial killing. We hypothesise that the difference is caused by different membrane structure and composition. Read More

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The synergistic effect of potassium ferrate and peroxymonosulfate application on biogas production and shaping microbial community during anaerobic co-digestion of a cow manure-cotton straw mixture.

Bioresour Technol 2021 Apr 16;333:125166. Epub 2021 Apr 16.

State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address:

Anaerobic co-digestion of a cow manure-cotton straw mixture (CCM) has been shown to promote methanogenesis, but the recalcitrant crystal structure of organic polymers in CCM hinders its hydrolysis during anaerobic digestion (AD). Here, the efficacy of different pretreatment methods based on potassium ferrate (PF) and peroxymonosulfate (PMS) was evaluated to facilitate CCM decomposition and methanogenesis during AD. The maximum lignocellulosic removal rate (62. Read More

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[Adsorption of BS-18 Amphoterically Modified Bentonite to Tetracycline and Norfloxacin Combined Pollutants].

Huan Jing Ke Xue 2021 May;42(5):2334-2342

College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.

Antibiotic pollution in the environment has become a hot topic. The amphoteric surfactant octadecyl dimethyl betaine (BS-18) was adopted to modify bentonite to investigate the effects and mechanisms of the composite adsorption of different types of antibiotics. Under the different modification ratios, temperatures, pH values, and ionic strength conditions, the adsorption of tetracycline (TC) and norfloxacin (NOR) by bentonite was studied under single and compound conditions, and the adsorption mechanism was analyzed and discussed in combination with the surface properties of amphoterically modified bentonite. Read More

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Occurrence and distribution of fecal indicators and pathogenic bacteria in seawater and Perna perna mussel in the Gulf of Annaba (Southern Mediterranean).

Environ Sci Pollut Res Int 2021 Apr 22. Epub 2021 Apr 22.

Laboratory of Eco-biology for Marine Environment and Coastlines, Faculty of Science, Badji Moukhtar University, BP 12, 23000, Annaba, Algeria.

The identification of fecal contamination in coastal marine ecosystems is one of the main requirements for evaluation of potential risks to human health. The objective of this study was to investigate the occurrence and distribution of fecal indicators and pathogenic bacteria in seawaters and mussels collected monthly during a period of 1 year from four different sites in Northeastern Algeria (sites S1 to S4), through biochemical and molecular analyses. Our research is the first to use molecular analysis to unambiguously identify the potentially pathogenic bacteria present in Algerian Perna perna mussels. Read More

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