PubAg

Main content area

You searched for: Subject "microbial growth" Remove constraint Subject: "microbial growth"
Start Over

Search

8,855  Search Results

« Previous | 1 - 20 of 8,855 |
Number of results to display per page

Search Results

1. Advances in online methods for monitoring microbial growth

Author:
Zhang, Xuzhi; Jiang, Xiaoyu; Hao, Zhihui; Qu, Keming
Source:
Biosensors & bioelectronics 2019 v.126 pp. 433-447
ISSN:
0956-5663
Subject:
microbial growth,   etc   ; automation; biosensors; food industry; health services; monitoring;     Show all 6 Subjects
Abstract:
... Understanding the characteristics of microbial growth is of great significance to many fields including in scientific research, the food industry, health care, and agriculture. Many methods have been established to characterize the process of microbial growth. Online and automated methods, in which sample transfer is avoided, are popular because they can facilitate the development of simple, safe, ...
DOI:
10.1016/j.bios.2018.10.035

2. Respirometric anatomy of the OSA process: microbial basis of enhanced sludge reduction mechanism

Author:
Yağcı, Nevin; Pala‐Özkök, İlke; Sarıalioğlu, Feraye; Allı, Buşra; Artan, Nazik; Orhon, Derin; Sözen, Seval
Source:
Journal of chemical technology and biotechnology 2018 v.93 no.12 pp. 3462-3471
ISSN:
0268-2575
Subject:
microbial growth,   etc   ; biomass; models; oxygen; peptones; sludge;     Show all 6 Subjects
Abstract:
... BACKGROUND: Extensive research effort has been devoted to the performance of the OSA system. Despite all studies focused on the assessment of observed sludge yield values, their explanations of the mechanisms causing sludge reduction remained highly speculative. RESULTS: A laboratory‐scale OSA system fed with peptone mixture was operated together with a system consisting only of a sequencing batch ...
DOI:
10.1002/jctb.5704

3. Go with the flow or solitary confinement: a look inside the single-cell toolbox for isolation of rare and uncultured microbes

Author:
Huys, Geert RB; Raes, Jeroen
Source:
Current opinion in microbiology 2018 v.44 pp. 1-8
ISSN:
1369-5274
Subject:
microbial growth,   etc   ; metagenomics; microorganisms; sequence analysis;     Show all 4 Subjects
Abstract:
... With the vast majority of the microbial world still considered unculturable or undiscovered, microbiologists not only require more fundamental insights concerning microbial growth requirements but also need to implement miniaturized, versatile and high-throughput technologies to upscale current microbial isolation strategies. In this respect, single-cell-based approaches are increasingly finding t ...
DOI:
10.1016/j.mib.2018.05.002

4. A comprehensive mechanistic model for simulating algal-bacterial growth dynamics in photobioreactors

Author:
Shriwastav, Amritanshu; Ashok, Vaishali; Thomas, Jeenu; Bose, Purnendu
Source:
Bioresource technology 2018 v.247 pp. 640-651
ISSN:
0960-8524
Subject:
microbial growth,   etc   ; mechanistic models; photobioreactors; simulation models;     Show all 4 Subjects
Abstract:
... A comprehensive mechanistic model with state of the art understanding and assumptions is presented to simulate major processes in a photobioreactor for describing the algal-bacterial growth dynamics. The model includes a total of 37 state variables that broadly cover all the essential physiological and physico-chemical processes in such a system. Model parameters are first calibrated with batch ex ...
DOI:
10.1016/j.biortech.2017.09.093

5. Physicochemical and microbial changes in yogurts produced under different pressure and temperature conditions

Author:
Lopes, Rita P.; Mota, Maria J.; Pinto, Carlos A.; Sousa, Sérgio; Lopes da Silva, José A.; Gomes, Ana M.; Delgadillo, Ivonne; Saraiva, Jorge A.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.99 pp. 423-430
ISSN:
0023-6438
Subject:
microbial growth,   etc   ; Lactobacillus delbrueckii subsp. bulgaricus; Streptococcus thermophilus; bacteria; food quality; gels; lactic fermentation; temperature; texture; yogurt;     Show all 10 Subjects
Abstract:
... Variations on fermentation conditions (temperature, pressure, etc.) can bring novel characteristics to fermentative processes and the respective final products. Regarding yogurt, both bacteria metabolism and physical properties of gel may be affected, resulting in different yogurts. Therefore, lactic acid fermentation was performed under different combinations of pressure (0.1, 10 and 30 MPa) and ...
DOI:
10.1016/j.lwt.2018.09.074

6. Extraction of high-quality RNA from Bacillus subtilis with a lysozyme pre-treatment followed by the Trizol method

Author:
Villa-Rodríguez, Eber; Ibarra-Gámez, Cuauhtemoc; de los Santos-Villalobos, Sergio
Source:
Journal of microbiological methods 2018 v.147 pp. 14-16
ISSN:
0167-7012
Subject:
microbial growth,   etc   ; Bacillus subtilis; RNA; developmental stages; lysozyme;     Show all 5 Subjects
Abstract:
... A suitable technique (lysozyme combined with Trizol reagent) was developed to improve the RNA yield, purity and integrity from Bacillus subtilis, under different bacterial growth stages. The obtained RNA was intact, having the required characteristics for downstream applications. ...
DOI:
10.1016/j.mimet.2018.02.011

7. Degradation of ozonized tire rubber by aniline – Degrading Candida methanosorbosa BP6 strain

Author:
Marchut-Mikołajczyk, Olga; Drożdżyński, Piotr; Januszewicz, Bartłomiej; Domański, Jarosław; Wrześniewska-Tosik, Krystyna
Source:
Journal of hazardous materials 2019 v.367 pp. 8-14
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; Candida; Fourier transform infrared spectroscopy; aldehydes; aniline; biodegradation; biosurfactants; emulsifying properties; oxygen; ozonation; ozone; polymers; protein content; roughness; rubber; tires; yeasts;     Show all 17 Subjects
Abstract:
... Aniline-degrading yeast strain - Candida methanosorbosa BP-6 was tested for its ability to degrade ground tire rubber, treated and non-treated with ozone. The protein content, respiratory activity, critical oxygen concentration (COC) and emulsifying activity of the yeast strain were monitored during 21 day degradation process. The effects of biodegradation were evaluated using aldehyde detection, ...
DOI:
10.1016/j.jhazmat.2018.12.045

8. An innovative nutritional slow-release packing material with functional microorganisms for biofiltration: Characterization and performance evaluation

Author:
Cheng, Zhuowei; Feng, Ke; Xu, Danhua; Kennes, Christian; Chen, Jianmeng; Chen, Dongzhi; Zhang, Shihan; Ye, Jiexu; Dionysiou, Dionysios D.
Source:
Journal of hazardous materials 2019 v.366 pp. 16-26
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; acetates; biofilters; biofiltration; bulk density; energy-dispersive X-ray analysis; foams; microorganisms; nutrients; pH; packaging materials; pollution control; polyurethanes; spraying; surface area; total nitrogen; total phosphorus;     Show all 17 Subjects
Abstract:
... The type of packing material for biofiltration has a great impact on microbial growth and pollutant removal. This study evaluated the feasibility of a nutritional slow-release packing material with functional microorganisms (NSRP-FM) in a biofilter for the removal of gaseous n-butyl acetate. Through the emulsification-cross linked process and microbial immobilization, an innovative packing materia ...
DOI:
10.1016/j.jhazmat.2018.11.070

9. Evaluation on the removal performance of dichloromethane and toluene from waste gases using an airlift packing reactor

Author:
Xu, Peilun; Wei, Yang; Cheng, Nana; Li, Sujing; Li, Wei; Guo, Tianjiao; Wang, Xiangqian
Source:
Journal of hazardous materials 2019 v.366 pp. 105-113
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; Chitinophaga; Gemmobacter; Vampirovibrio; biomass; gases; high-throughput nucleotide sequencing; methylene chloride; microbial communities; pharmaceutical industry; toluene; volatile organic compounds; wastes;     Show all 13 Subjects
Abstract:
... Biological removal of dichloromethane (DCM) from pharmaceutical industry is limited by its recalcitrance. In this study, an airlift packing reactor (ALPR), which combined the suspended and fixed-film microbial growth system, was set up to remove DCM and co-existed toluene. The removal performance of the ALPR for DCM was greater than traditional airlift reactor (ALR). The maximum elimination capaci ...
DOI:
10.1016/j.jhazmat.2018.11.081

10. Biodegradation and toxicity of emerging contaminants: Isolation of an exopolysaccharide-producing Sphingomonas sp. for ionic liquids bioremediation

Author:
Koutinas, Michalis; Vasquez, Marlen I.; Nicolaou, Euthimia; Pashali, Petros; Kyriakou, Eleni; Loizou, Elena; Papadaki, Aikaterini; Koutinas, Apostolis A.; Vyrides, Ioannis
Source:
Journal of hazardous materials 2019 v.365 pp. 88-96
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; Daphnia magna; Selenastrum capricornutum; Sphingomonas; Vibrio fischeri; biochemical pathways; biodegradation; biopolymers; bioremediation; bromine; environmental impact; exopolysaccharides; galacturonic acid; glucose; ionic liquids; metabolites; tetrabutylammonium compounds; toxicity;     Show all 18 Subjects
Abstract:
... Ionic liquids (ILs) have been characterized as contaminants of emerging concern (CEC) that often resist biodegradation and impose toxicity upon environmental release. Sphingomonas sp. MKIV has been isolated as an extreme microorganism capable for biodegradation of major classes of ILs. Six imidazolium-, pyridinium- and ammonium-based ILs (pyridinium trifluoromethanesulfonate [Py][CF3SO3], 1-(4-pyr ...
DOI:
10.1016/j.jhazmat.2018.10.059

11. Direct electricity production from subaqueous wetland sediments and banana peels using membrane-less microbial fuel cells

Author:
Yang, Yunlong; Lin, Ershu; Sun, Shuqian; Chen, Huan; Chow, Alex T.
Source:
Industrial crops and products 2019 v.128 pp. 70-79
ISSN:
0926-6690
Subject:
microbial growth,   etc   ; banana peels; biocatalysts; cathodes; electricity generation; fluorescence emission spectroscopy; inoculum; microbial fuel cells; organic matter; raw materials; sediments; sodium acetate; ultraviolet-visible spectroscopy; wetlands;     Show all 14 Subjects
Abstract:
... Subaqueous wetland sediments (SWSs) and banana peels (BPs), respectively used as anaerobic inoculums and raw materials, were valorized for electricity generation in membrane-less and biocathode-containing microbial fuel cells (MLBC-MFCs). The maximum current density was 78.2 mA/m2 for banana peel extracts (BPE) and 91.3 mA/m2 for anaerobically fermented banana peel extracts (ABPE). The polarizatio ...
DOI:
10.1016/j.indcrop.2018.10.070

12. Influence of glycated nitrosohaemoglobin prepared from porcine blood cell on physicochemical properties, microbial growth and flavour formation of Harbin dry sausages

Author:
Liu, Pengxue; Wang, Shouwei; Zhang, Huan; Wang, Haitang; Kong, Baohua
Source:
Meat science 2019 v.148 pp. 96-104
ISSN:
0309-1740
Subject:
microbial growth,   etc   ; Enterobacteriaceae; blood cells; flavor; lactic acid bacteria; lipid peroxidation; meat products; pH; sausages; sodium nitrite; swine; thiobarbituric acid-reactive substances; volatile compounds; water activity;     Show all 14 Subjects
Abstract:
... Glycated nitrosohaemoglobin (G-NO-Hb) prepared from porcine blood cells was used in natural fermented Harbin dry sausages to evaluate their possible as an alternative for sodium nitrite (SN). The results show that the G-NO-Hb had no significant effect on the pH, water activity, and growth of total bacteria and lactic acid bacteria counts (P > 0.05). G-NO-Hb inhibited Enterobacteriaceae growth (P < ...
DOI:
10.1016/j.meatsci.2018.10.008

13. Characterization of three different types of extracellular vesicles and their impact on bacterial growth

Author:
Yu, Siran; Zhao, Zhehao; Xu, Xiaoyan; Li, Min; Li, Ping
Source:
Food chemistry 2019 v.272 pp. 372-378
ISSN:
0308-8146
Subject:
microbial growth,   etc   ; Escherichia coli K12; Lactobacillus plantarum; bacteria; body fluids; coconut water; coconuts; exosomes; fluorescence microscopy; gene expression; mammals; microRNA; nanoparticles; particle size distribution; protein content; stem cells;     Show all 16 Subjects
Abstract:
... Recently body fluids have been found to contain a class of nanoparticles released from cells, referred to as extracellular vesicles; exosomes are a type of small-diameter extracellular vesicle. We selected three types of sample: milk-derived exosomes, adipose-derived stem cell exosomes, and nanoparticles extracted from coconut water, to investigate their morphology, particle size distribution, pro ...
DOI:
10.1016/j.foodchem.2018.08.059

14. Synergistic effects of iron and persulfate on the efficient production of volatile fatty acids from waste activated sludge: Understanding the roles of bioavailable substrates, microbial community & activities, and environmental factors

Author:
Luo, Jingyang; Wu, Lijuan; Feng, Qian; Fang, Fang; Cao, Jiashun; Zhang, Qin; Su, Yinglong
Source:
Biochemical engineering journal 2019 v.141 pp. 71-79
ISSN:
1369-703X
Subject:
microbial growth,   etc   ; acetic acid; activated sludge; adenosine triphosphate; bacteria; chemical oxygen demand; environmental factors; enzymes; fermentation; hydrolysis; iron; microbial communities; pH; solubilization; volatile fatty acids;     Show all 15 Subjects
Abstract:
... Evident synergistic effects of iron activated persulfate (Fe/PS) on the marked promotion of volatile fatty acids (VFAs) from waste activated sludge during anaerobic fermentation were reported. The maximal VFAs concentration was up to 2255 mg COD/L with the proportion of 72.8% acetic acid in the Fe/PS reactor while it was merely 120 and 517 mg COD/L in Fe and PS reactors, respectively. Fe/PS treatm ...
DOI:
10.1016/j.bej.2018.10.010

15. Preparation, characterization, and application of macroporous activated carbon (MAC) suitable for the BAC water treatment process

Author:
Dong, Lihua; Liu, Wenjun; Yu, Yi; Hou, Li'an; Gu, Ping; Chen, Guanyi
Source:
The Science of the total environment 2019 v.647 pp. 1359-1367
ISSN:
0048-9697
Subject:
microbial growth,   etc   ; activated carbon; adsorption; bacteria; bamboos; bioactive properties; breeding; carbonation; coal; filtration; glucose; hardness; macropores; micropores; pollutants; porous media; temperature; wastes; water treatment;     Show all 19 Subjects
Abstract:
... To address the sharp decrease in efficiency of the biological activated carbon (BAC) process at low temperatures, a new type of activated carbon (AC), macroporous activated carbon (MAC), was developed from bamboo waste scraps via a special compression, carbonation and activation process without the introduction of chemicals. MAC contains not only the micron-level macropores (Vmaco > 0.71 ml/g) suf ...
DOI:
10.1016/j.scitotenv.2018.07.280

16. Recycled desalination membranes as a support material for biofilm development: A new approach for microcystin removal during water treatment

Author:
Morón-López, Jesús; Nieto-Reyes, Lucía; Senán-Salinas, Jorge; Molina, Serena; El-Shehawy, Rehab
Source:
The Science of the total environment 2019 v.647 pp. 785-793
ISSN:
0048-9697
Subject:
microbial growth,   etc   ; biofilm; calcium; cost effectiveness; desalination; drought; economic feasibility; fouling; global warming; hydrophilicity; longevity; microcystins; pollution; recycling; reverse osmosis; roughness; wastes; water treatment;     Show all 18 Subjects
Abstract:
... Increased harmful cyanobacterial blooms and drought are some negative impacts of global warming. To deal with cyanotoxin release during water treatment, and to manage the massive quantities of end-of-life membrane waste generated by desalination processes, we propose an innovative biological system developed from recycled reverse osmosis (RO) membranes to remove microcystins (MC). Our system, name ...
DOI:
10.1016/j.scitotenv.2018.07.435

17. Bioconversion of plant biomass hydrolysate into bioplastic (polyhydroxyalkanoates) using Ralstonia eutropha 5119

Author:
Bhatia, Shashi Kant; Gurav, Ranjit; Choi, Tae-Rim; Jung, Hye-Rim; Yang, Soo-Yeon; Moon, Yu-Mi; Song, Hun-Suk; Jeon, Jong-Min; Choi, Kwon-Young; Yang, Yung-Hun
Source:
Bioresource technology 2019 v.271 pp. 306-315
ISSN:
0960-8524
Subject:
microbial growth,   etc   ; Cupriavidus necator; Miscanthus; acetates; ammonium chloride; barley; bioplastics; biotransformation; byproducts; carbon; furfural; glucose; hydrolysates; hydroxymethylfurfural; lignocellulose; phytomass; polyhydroxyalkanoates; response surface methodology; vanillin;     Show all 19 Subjects
Abstract:
... Pretreatment of lignocellulosic biomass results in the formation of byproducts (furfural, hydroxymethylfurfural [HMF], vanillin, acetate etc.), which affect microbial growth and productivity. Furfural (0.02%), HMF (0.04%), and acetate (0.6%) showed positive effects on Ralstonia eutropha 5119 growth and polyhydroxyalkanoate (PHA) production, while vanillin exhibited negative effects. Response optim ...
DOI:
10.1016/j.biortech.2018.09.122

18. Denitrification- and anammox-dominant simultaneous nitrification, anammox and denitrification (SNAD) process in subsurface flow constructed wetlands

Author:
Chen, Danyue; Gu, Xushun; Zhu, Wenying; He, Shengbing; Wu, Fei; Huang, Jungchen; Zhou, Weili
Source:
Bioresource technology 2019 v.271 pp. 298-305
ISSN:
0960-8524
Subject:
microbial growth,   etc   ; ammonia; anaerobic ammonium oxidation; denitrification; microbial communities; nitrates; nitrogen; organic carbon; oxidation; oxygen; subsurface flow; surface water; vegetation; wetlands;     Show all 14 Subjects
Abstract:
... Simultaneous nitrification, anammox and denitrification (SNAD) process was developed in subsurface flow constructed wetlands (SFCWs) to treat polluted surface water. The effects of vegetation, hydraulic retention time (HRT), C/N, and influent nitrogen forms on nitrogen removal and microbial communities were investigated. Results showed that denitrification- and anammox-dominant SNAD corresponded t ...
DOI:
10.1016/j.biortech.2018.09.123

19. Effects of Fe-Mn modified biochar composite treatment on the properties of As-polluted paddy soil

Author:
Lin, Lina; Li, Zhongyang; Liu, Xuewei; Qiu, Weiwen; Song, Zhengguo
Source:
Environmental pollution 2019 v.244 pp. 600-607
ISSN:
0269-7491
Subject:
microbial growth,   etc   ; Bacteroidetes; Firmicutes; Proteobacteria; alkaline phosphatase; arsenic; bacterial communities; biochar; enzyme activity; paddy soils; redox potential; soil enzymes; soil pH; soil physical properties;     Show all 14 Subjects
Abstract:
... This study aimed to determine the effects of FeMn modified biochar composite (FMBC) treatment on the pH, redox properties, enzyme activities, and bacterial communities of As-polluted paddy soil. The two utilized FMBCs (FMBC1 and FMBC2) exhibited markedly different effects on soil pH, and treatment with biochar (BC) or FMBCs increased the soil redox potential and reduced the content of available As ...
DOI:
10.1016/j.envpol.2018.10.011

20. Growth explains microbial carbon use efficiency across soils differing in land use and geology

Author:
Zheng, Qing; Hu, Yuntao; Zhang, Shasha; Noll, Lisa; Böckle, Theresa; Richter, Andreas; Wanek, Wolfgang
Source:
Soil biology & biochemistry 2019 v.128 pp. 45-55
ISSN:
0038-0717
Subject:
microbial growth,   etc   ; environmental factors; forests; laboratory experimentation; land use; limestone; microbial biomass; microbial carbon; microbial physiology; microorganisms; pastures; silicates; soil temperature; soil water; water content; water holding capacity;     Show all 16 Subjects
Abstract:
... The ratio of carbon (C) that is invested into microbial growth to organic C taken up is known as microbial carbon use efficiency (CUE), which is influenced by environmental factors such as soil temperature and soil moisture. How microbes will physiologically react to short-term environmental changes is not well understood, primarily due to methodological restrictions. Here we report on two indepen ...
DOI:
10.1016/j.soilbio.2018.10.006