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1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. C. difficile PCR-ribotype 023 might go undetected when using ChromId C. difficile agar

Author:
Reigadas, E.; Alcalá, L.; Marín, M.; Martín, A.; Bouza, E.
Source:
Anaerobe 2017 v.44 pp. 34-35
ISSN:
1075-9964
Subject:
microbial growth,   etc   ; Clostridium difficile; agar; culture media;     Show all 4 Subjects
Abstract:
... We compared the performance of the new chromogenic medium ChromID C. difficile with that of CLO agar. ChromID C. difficile agar is a sensitive medium that can accelerate the presumptive identification of C. difficile, however ribotype 023 might go undetected when using this chromogenic medium. ...
DOI:
10.1016/j.anaerobe.2017.01.008

8. Dodecylresorufin (C12R) Outperforms Resorufin in Microdroplet Bacterial Assays

Author:
Scheler, Ott; Kaminski, Tomasz S.; Ruszczak, Artur; Garstecki, Piotr
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.18 pp. 11318-11325
ISSN:
1944-8252
Subject:
microbial growth,   etc   ; droplets; monitoring; oils;     Show all 4 Subjects
Abstract:
... This paper proves that dodecylresorufin (C12R) outperforms resorufin (the conventional form of this dye) in droplet microfluidic bacterial assays. Resorufin is a marker dye that is widely used in different fields of microbiology and has increasingly been applied in droplet microfluidic assays and experiments. The main concern associated with resorufin in droplet-based systems is dye leakage into t ...
DOI:
10.1021/acsami.6b02360

9. Comparing design of experiments and optimal experimental design techniques for modelling the microbial growth rate under static environmental conditions

Author:
Akkermans, Simen; Nimmegeers, Philippe; Van Impe, Jan F.
Source:
Food microbiology 2018 v.76 pp. 504-512
ISSN:
0740-0020
Subject:
microbial growth,   etc   ; environmental factors; experimental design; labor; models; predictive microbiology; uncertainty;     Show all 7 Subjects
Abstract:
... Building secondary models that describe the growth rate as a function of multiple environmental conditions is often very labour intensive and costly. As such, the current research aims to assist in decreasing the required experimental effort by studying the efficacy of both design of experiments (DOE) and optimal experimental designs (OED) techniques. This is the first research in predictive micro ...
DOI:
10.1016/j.fm.2018.05.010

10. Susceptibility of thermo-hydro-treated birch plywood to mould and blue stain fungi

Author:
Irbe, Ilze; Grinins, Juris; Andersone, Ingeborga; Andersons, Bruno
Source:
Wood material science and engineering 2018 v.13 no.5 pp. 296-304
ISSN:
1748-0280
Subject:
microbial growth,   etc   ; Betula; blue-stain fungi; engineering; formaldehyde; microstructure; phenol; plywood; temperature; water uptake; weathering; wood;     Show all 12 Subjects
Abstract:
... In this study, mould and blue stain susceptibility, capillary water uptake (CWU) and microstructural properties of two thermo-hydro-treated (THT) birch plywood products A and B were investigated. Plywood A represented a THT industrial plywood glued with a phenol formaldehyde (PF) adhesive. Plywood B represented panels from THT veneers glued with a PF film. The THT regimes were (temperature, °C/tim ...
DOI:
10.1080/17480272.2017.1335346

11. Enhanced removal of gaseous 1,3-dichlorobenzene in biotrickling filters by rhamnolipid and Mg (II)

Author:
Sun, Zhuqiu; Yang, Bairen; Ding, Cheng; Li, Zhaoxia; Wang, Liping
Source:
Journal of hazardous materials 2018 v.360 pp. 571-577
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; additives; biofilters; contact angle; dissolved oxygen; magnesium; oxygen; rhamnolipids; solubility;     Show all 9 Subjects
Abstract:
... In this study, the effect of rhamnolipid and Mg (II) on microbial growth and 1,3-dichlorobenzene removal was investigated in two identical lab-scale biotrickling filters (named BTF1 and BTF2). The contact angle and Henry’s constant were detected at various concentrations of rhamnolipid and the results indicated that rhamnolipid is able to effectively improve the solubility of 1,3-dichlorobenzene i ...
DOI:
10.1016/j.jhazmat.2018.08.054

12. A tutorial on uncertainty propagation techniques for predictive microbiology models: A critical analysis of state-of-the-art techniques

Author:
Akkermans, Simen; Nimmegeers, Philippe; Van Impe, Jan F.
Source:
International journal of food microbiology 2018 v.282 pp. 1-8
ISSN:
0168-1605
Subject:
microbial growth,   etc   ; Monte Carlo method; case studies; mathematical models; prediction; predictive microbiology; researchers; temperature profiles; uncertainty;     Show all 9 Subjects
Abstract:
... Building mathematical models in predictive microbiology is a data driven science. As such, the experimental data (and its uncertainty) has an influence on the final predictions and even on the calculation of the model prediction uncertainty. Therefore, the current research studies the influence of both the parameter estimation and uncertainty propagation method on the calculation of the model pred ...
DOI:
10.1016/j.ijfoodmicro.2018.05.027

13. Silver nanoparticles incorporated konjac glucomannan-montmorillonite nacre-like composite films for antibacterial applications

Author:
Zhu, Wenkun; Li, Jiwei; Lei, Jia; Li, Yi; Chen, Tao; Duan, Tao; Yao, Weitang; Zhou, Jian; Yu, Yang; Liu, Yan
Source:
Carbohydrate polymers 2018 v.197 pp. 253-259
ISSN:
0144-8617
Subject:
microbial growth,   etc   ; Amorphophallus; coatings; composite films; composite materials; filtration; light transmission; microstructure; nanosheets; nanosilver; tensile strength;     Show all 11 Subjects
Abstract:
... Artificial nacre-like konjac glucomannan-Montmorillonite (KGM-MTM) composite films with ‘brick and mortar’ microstructures have been fabricated based on using KGM-MTM hybrid nanosheets as building blocks. In the designed fabrication procedure, we assembled hybrid building blocks with a thin layer of KGM coating on the MTM nanosheets to form KGM-MTM composite film via vacuum filtration. The nacre-l ...
DOI:
10.1016/j.carbpol.2018.06.005

14. The role of formulation and follicular pathway in voriconazole cutaneous delivery from liposomes and nanostructured lipid carriers B Biointerfaces

Author:
Santos, G.A.; Angelo, T.; Andrade, L.M.; Silva, S.M.M.; Magalhães, P.O.; Cunha-Filho, M.; Gelfuso, G.M.; Taveira, S.F.; Gratieri, T.
Source:
Colloids and surfaces 2018 v.170 pp. 341-346
ISSN:
0927-7765
Subject:
microbial growth,   etc   ; Trichophyton rubrum; colloids; dispersions; drug delivery systems; drugs; gels; lipids; nanotechnology;     Show all 9 Subjects
Abstract:
... In general, colloids provide increased cutaneous permeation of drugs. Still, skin interaction and main pathways for drug diffusion may vary depending on system and formulation characteristics. The knowledge of how different colloidal systems interact with biological membranes and the formulation impact on delivery is especially relevant for drugs that can be encapsulated in multiple nanosystems, a ...
DOI:
10.1016/j.colsurfb.2018.06.037

15. Potential of using sodium bicarbonate as external carbon source to cultivate microalga in non-sterile condition

Author:
Tu, Zemin; Liu, Liangting; Lin, Weitie; Xie, Zhangzhang; Luo, Jianfei
Source:
Bioresource technology 2018 v.266 pp. 109-115
ISSN:
0960-8524
Subject:
microbial growth,   etc   ; Chlorella; antibiotics; carbon; growth promotion; lipids; microalgae; pH; salinity; sodium bicarbonate;     Show all 10 Subjects
Abstract:
... In this study, a saline-alkaline tolerant microalgal strain was isolated and identified as Chlorella sp. LPF. This strain was able to grow at pH values up to 10 and at salinities up to 5%, and tolerated to 80 g L⁻¹ of sodium bicarbonate. The utilization of bicarbonate as carbon source significantly promoted microalgal growth and lipid production. In the non-sterile cultivation supplying with 80 g  ...
DOI:
10.1016/j.biortech.2018.06.076

16. Chitosan Resistance of Bacteria and Micromycetes Differing in Ability to Produce Extracellular Chitinases and Chitosanases

Author:
Aktuganov, G. E.; Safina, V. R.; Galimzianova, N. F.; Kuz’mina, L. Yu.; Gilvanova, E. A.; Boyko, T. F.; Melent’ev, A. I.
Source:
Microbiology 2018 v.87 no.5 pp. 716-724
ISSN:
0026-2617
Subject:
microbial growth,   etc   ; Paenibacillus ehimensis; Penicillium; bacteria; biomass production; chitinase; chitosan; chitosanase; fungi;     Show all 9 Subjects
Abstract:
... Effect of chitosan on growth and development of bacterial and fungal strains differing in their ability to synthesize chitinases and chitosanases was explored. Bacterial cultures simultaneously producing chitinases and chitosanases were found to be more resistant to soluble chitosan than both the strains synthesizing only chitinases and inactive bacteria. Paenibacillus ehimensis strain IB-739, whi ...
DOI:
10.1134/S0026261718050028

17. Temperature affects lag period and growth of bacteria in soil according to a Ratkowsky (square root) model after a drying/rewetting episode

Author:
Dobrić, Sanja; Bååth, Erland
Source:
Soil biology & biochemistry 2018 v.124 pp. 32-37
ISSN:
0038-0717
Subject:
microbial growth,   etc   ; air drying; bacteria; climatic zones; environmental impact; models; prediction; soil; temperature;     Show all 9 Subjects
Abstract:
... Temperature does not only affect bacterial growth in soil under stable conditions, but will also affect the time frame of recovery of growth after a perturbation, like a drying/rewetting event. To properly predict growth and activity of microorganisms during and after disturbances, environmental effects on possible lag periods, as well as on resulting growth and activity, have to be considered. We ...
DOI:
10.1016/j.soilbio.2018.05.023

18. Membrane Distillation Biofouling: Impact of Feedwater Temperature on Biofilm Characteristics and Membrane Performance

Author:
Bogler, Anne; Bar-Zeev, Edo
Source:
Environmental science & technology 2018 v.52 no.17 pp. 10019-10029
ISSN:
1520-5851
Subject:
microbial growth,   etc   ; Anoxybacillus; bacteria; biofilm; biofouling; cell growth; distillation; endospores; models; temperature; wastewater treatment;     Show all 11 Subjects
Abstract:
... Membrane distillation (MD) is a temperature driven membrane separation technology that holds great potential for decentralized and sustainable wastewater treatment systems. Yet, similarly to all membrane based systems, microbial fouling (biofouling) might be a critical hurdle for MD wastewater treatment applications. In this study we determined the impact of increasing feedwater temperatures (47 ° ...
DOI:
10.1021/acs.est.8b02744

19. Automated image analysis tool to measure microbial growth on solid cultures

Author:
Ancin-Murguzur, Francisco Javier; Barbero-López, Aitor; Kontunen-Soppela, Sari; Haapala, Antti
Source:
Computers and electronics in agriculture 2018 v.151 pp. 426-430
ISSN:
0168-1699
Subject:
microbial growth,   etc   ; automation; culture media; data collection; image analysis; microorganisms; models; support vector machines; technicians; virulence;     Show all 10 Subjects
Abstract:
... Microbial growth on culture media is a commonplace technique to estimate the growth rate and virulence of microbes, assess inhibitory effects of compounds and estimate potential damages of plant pathogens in agriculture. Growth area measurement of solid cultures is still commonly performed as a manual process that requires skilled technicians and substantial time, thus warranting an automated syst ...
DOI:
10.1016/j.compag.2018.06.031

20. Impact of poxB, pta, and ackA genes on mineral‐weathering of Enterobacter cloacae S71

Author:
Wang, Qi; Zhang, Zhendong; Zhu, Ying; He, Linyan; Sheng, Xiafang
Source:
Journal of basic microbiology 2018 v.58 no.7 pp. 633-642
ISSN:
0233-111X
Subject:
microbial growth,   etc   ; Enterobacter cloacae; acetates; acetic acid; aluminum; bacteria; biotite; genes; iron; mutants; weathering;     Show all 11 Subjects
Abstract:
... In this study, biotite weathering behaviors were compared between mineral‐weathering bacteria Enterobacter cloacae S71, mutant strains created by the deletion of poxB, pta, and ackA genes involved in acetate formation, and their complemented strains. Compared to strain S71, a decrease in bacterial growth was observed during the early and middle stages for the mutant ΔpoxB and at the middle and lat ...
DOI:
10.1002/jobm.201800013