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1. Phenomenological models as effective tools to discover cellular design principles

Author:
Dutta, Dibyendu; Saini, Supreet
Source:
Archives of microbiology 2019 v.201 no.3 pp. 283-293
ISSN:
0302-8933
Subject:
microbial growth,   etc   ; biotechnology; growth models; microbial physiology; microorganisms; prediction;     Show all 6 Subjects
Abstract:
... Microbes have proved useful to us in many different ways. To utilize microbes, we have mostly focused on maximizing growth, to improve yield of chemicals derived from the microbes. However, to truly tap into their potential, we should also aim to understand microbial physiology. We present a historical perspective of the developments in the field of Microbial Biotechnology, focusing on how the gro ...
DOI:
10.1007/s00203-019-01641-z

2. 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

3. Study and modeling of fluctuating dissolved oxygen concentration impact on Corynebacterium glutamicum growth in a scale-down bioreactor

Author:
Kaboré, Abdoul Karim; Delaunay, Stéphane; Blanchard, Fabrice; Guedon, Emmanuel; Fick, Michel; Olmos, Eric
Source:
Process biochemistry 2019 v.77 pp. 8-17
ISSN:
1359-5113
Subject:
microbial growth,   etc   ; Corynebacterium glutamicum; aeration; bacteria; bioreactors; dissolved oxygen; growth models; kinetics;     Show all 8 Subjects
Abstract:
... In this study, the impact of dissolved oxygen concentrations oscillations on Corynebacterium glutamicum 2262 ΔldhA growth was studied experimentally and modeled. Aiming at this, a dedicated two-compartment scale down set-up composed of two interconnected aerobic/anaerobic stirred tank bioreactors was used. The mean residence time of bacteria in each compartment was modified by adapting circulation ...
DOI:
10.1016/j.procbio.2018.10.016

4. 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

5. 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

6. 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

7. Quality and microbial stability of part-baked ‘Barbari bread’ during freezing storage

Author:
Vasafi, Pegah Sadeghi; Hamdami, Nasser; Keramat, Javad
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.104 pp. 173-179
ISSN:
0023-6438
Subject:
microbial growth,   etc   ; Barbari; baking; color; enzymatic reactions; flat breads; freezing; frozen storage; hardness; shelf life; storage time; weight loss;     Show all 12 Subjects
Abstract:
... The aim of this study was to evaluate the impact of part-baking and freezing on the quality and microbial stability of part-baked flat bread (Barbari) in order to investigate a novel production and storage process. In this research, samples were baked at different baking times (2, 4, 6, 8, 10, 12 min) and the appropriate time was determined. Then, part-baked bread (Barbari) was frozen at −30 °C an ...
DOI:
10.1016/j.lwt.2019.01.033

8. Integrated electrokinetic processes for the remediation of phthalate esters in river sediments: A mini-review

Author:
Yang, Gordon C.C.
Source:
The Science of the total environment 2019 v.659 pp. 963-972
ISSN:
0048-9697
Subject:
microbial growth,   etc   ; anodes; biodegradation; bioremediation; carbon; hydrogen peroxide; iron oxides; microorganisms; oxidation; oxygen; phthalates; rivers; sediments; slurries; Taiwan;     Show all 15 Subjects
Abstract:
... Concerning the contamination of phthalate esters (PAEs) in river sediments, this mini-review introduces four recently reported novel “integrated electrokinetic (EK) processes” for the remediation purpose, namely two combined technologies of the EK process and advanced oxidation process (EK-AOP Processes) and two combined technologies of the EK process and biological process (EK-BIO Processes). The ...
DOI:
10.1016/j.scitotenv.2018.12.334

9. Coupling the dynamics of diffused gases and microbial growth in modified atmosphere packaging

Author:
Dolan, K.D.; Meredith, H.; Bolton, D.J.; Valdramidis, V.P.
Source:
International journal of food microbiology 2019 v.292 pp. 31-38
ISSN:
0168-1605
Subject:
microbial growth,   etc   ; Pseudomonas; carbon dioxide; diffusivity; dissolved gases; headspace analysis; lactic acid bacteria; modified atmosphere packaging; specific growth rate;     Show all 9 Subjects
Abstract:
... Coupling microbial dynamics with the complete dynamics of the packaging gases is still a challenge. In this work the microbial growth kinetic parameters for Pseudomonas and Lactic Acid Bacteria (LAB) in MAP are identified based on accurate estimation of diffusivity of gases and parameter scaled sensitivity approaches. The microbial dynamics are also compared with those estimated based on partial p ...
DOI:
10.1016/j.ijfoodmicro.2018.11.027

10. The relationship of dielectric response and water activity in food

Author:
Renshaw, Ryan C.; Dimitrakis, Georgios A.; Robinson, John P.; Kingman, Samuel W.
Source:
Journal of food engineering 2019 v.244 pp. 80-90
ISSN:
0260-8774
Subject:
microbial growth,   etc   ; chemical reactions; drying; foods; fruits; hydrocolloids; shelf life; sorption; sorption isotherms; sugars; temperature; water activity; water content;     Show all 13 Subjects
Abstract:
... This study has deduced a correlation between points of inflection of water activity and loss factor with respect to moisture content. A point of inflection in loss factor with respect to moisture content was found to coincide with the sorption isotherm point of inflection that defines the transition from multilayer to solution in every instance analysed, with an average difference of just 0.01 kg  ...
DOI:
10.1016/j.jfoodeng.2018.08.037

11. Effect of photopolymerized glaze application on bacterial adhesion on ocular acrylic resin surfaces submitted to accelerated ageing

Author:
Nagay, B.E.; Goiato, M.C.; da Silva, E.V.F.; Andreotti, A.M.; Bitencourt, S.B.; Duque, C.; dos Santos, P.H.; dos Santos, D.M.
Source:
Letters in applied microbiology 2019 v.68 no.2 pp. 120-127
ISSN:
0266-8254
Subject:
microbial growth,   etc   ; Staphylococcus aureus; Staphylococcus epidermidis; adhesion; bacterial adhesion; biofilm; color; microorganisms; probability; prostheses; roughness; virulent strains;     Show all 12 Subjects
Abstract:
... Conditions of the acrylic resin (AR) surface, such as roughness, can promote a favourable environment for the adhesion of micro‐organisms, even on the surface of ocular prostheses. This study evaluated the influence of photopolymerized glaze application on the roughness of ARs and adhesion of Staphylococcus aureus and Staphylococcus epidermidis on ocular AR surfaces submitted to accelerated ageing ...
DOI:
10.1111/lam.13094

12. Kinetic models for production of propionic acid by Propionibacter freudenrechii subsp. shermanii and Propionibacterium freudenreichii subsp. freudenreichii in date syrup during sonication treatments

Author:
Hashemi, Seyed Mohammad Bagher; Roohi, Reza
Source:
Biocatalysis and agricultural biotechnology 2019 v.17 pp. 613-619
ISSN:
1878-8181
Subject:
microbial growth,   etc   ; Propionibacter; Propionibacterium freudenreichii subsp. freudenreichii; exposure duration; fermentation; kinetics; microorganisms; propionic acid; sonication; syrups; ultrasonic treatment;     Show all 11 Subjects
Abstract:
... The effect of different sonication amplitudes (30 kHz, 100 W; 25%, 50% and 75%) as well as the exposure time (5, 10 and 15 min) on the microbial growth and propionic acid production by Propionibacter freudenrechii subsp. shermanii PTCC 1661 and Propionibacterium freudenreichii subsp. freudenreichii PTCC 1674 in the matrix of date syrup was investigated. Results showed the ultrasonication significa ...
DOI:
10.1016/j.bcab.2019.01.027

13. 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

14. 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

15. Impact of tetracycline-clay interactions on bacterial growth

Author:
Lv, Guocheng; Li, Zhaohui; Elliott, Lisa; Schmidt, Monica J.; MacWilliams, Maria P.; Zhang, Baogang
Source:
Journal of hazardous materials 2019 v.370 pp. 91-97
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; Escherichia coli; Gram-negative bacteria; Salmonella enterica; antibiotic resistance; antibiotics; antimicrobial properties; bacterial infections; clay soils; kaolinite; montmorillonite; mutation; physicochemical properties; toxicity;     Show all 14 Subjects
Abstract:
... Antibiotics are extremely effective against bacterial infections due to their selective toxicity for bacteria rather than the host. Extensive use and misuse of antibiotics resulted in significant increases in antibiotic levels in aquatic and soil environments. Bacteria exposed to antibiotics with low concentrations may develop antibiotic resistance. In this study a swelling 2:1 clay mineral montmo ...
DOI:
10.1016/j.jhazmat.2017.09.029

16. Occurrence and removal of antibiotics and antibiotic resistance genes in natural and constructed riverine wetlands in Beijing, China

Author:
Li, Si; Zhang, Ruijie; Hu, Jingrun; Shi, Wanzi; Kuang, Yuzhu; Guo, Xiaoyu; Sun, Weiling
Source:
The Science of the total environment 2019 v.664 pp. 546-553
ISSN:
0048-9697
Subject:
microbial growth,   etc   ; antibiotic resistance genes; antibiotics; effluents; environmental factors; lakes; ribosomal RNA; rivers; sediments; summer; temperature; wastewater; wastewater treatment; wetlands; winter; China;     Show all 16 Subjects
Abstract:
... Simultaneous elimination of antibiotics and antibiotic resistance genes (ARGs) is rarely investigated in full-scale riverine wetlands. Here, we compared the occurrence, abundance, and removal of 60 antibiotics and 27 ARGs in natural (Yeya Lake (YL)) and constructed (Bai River (BR)) riverine wetlands in Beijing, China. The concentrations of antibiotics in YL wetland were ND–51.9 ng/L in water and N ...
DOI:
10.1016/j.scitotenv.2019.02.043

17. Intermittent light and microbial action of mixed endogenous source DOM affects degradation of 17β-estradiol day after day in a relatively deep natural anaerobic aqueous environment

Author:
Gu, Lipeng; Huang, Bin; Han, Fengxia; Xu, Zhixiang; Ren, Dong; He, Huan; Pan, Xuejun; Dionysiou, Dionysios D.
Source:
Journal of hazardous materials 2019 v.369 pp. 40-49
ISSN:
0304-3894
Subject:
microbial growth,   etc   ; anaerobic conditions; bioavailability; biodegradation; electron transfer; energy transfer; estradiol; iron; irradiation; laboratory experimentation; lighting; molecular weight; optical properties; organic matter; photolysis; wastewater;     Show all 16 Subjects
Abstract:
... All kinds of wastewaters containing steroid estrogens (SEs) and mixed endogenous source dissolved organic matter (DOM) enter natural water environments with intermittent illumination where microbial action occurs in a relatively deep natural aqueous environment. The role of mixed endogenous source DOM in SEs’ biodegradation and photochemical degradation in such environments was studied using 17β-e ...
DOI:
10.1016/j.jhazmat.2019.02.017

18. A novel natural coating for food preservation: Effectiveness on microbial growth and physicochemical parameters

Author:
Carocho, Marcio; Heleno, Sandrina; Rodrigues, Paula; Barreiro, M. Filomena; Barros, Lillian; Ferreira, Isabel C.F.R.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.104 pp. 76-83
ISSN:
0023-6438
Subject:
microbial growth,   etc   ; anti-infective agents; antioxidants; biopolymers; coatings; color; cooked foods; dipping; food preservation; hardness; iota-carrageenan; microbial load; physicochemical properties; rosemary;     Show all 14 Subjects
Abstract:
... This work describes the development of a sustainable and natural coating solution based on iota-carrageenan and rosemary extract intended to preserve cooked ham through dipping. Upon comparing the physical and microbial load changes between this solution and the traditional plastic wrap along 15 consecutive days, the results showed that in terms of microbial load the samples treated with the devel ...
DOI:
10.1016/j.lwt.2019.01.031

19. 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

20. Biodegradation and Detoxification of Benzalkonium Chloride in Synthetic and Industrial Effluents in Upflow Biofilm Aerobic Reactors

Author:
Fortunato, María Susana; Baroni, Sabina; González, Ana Julieta; Álvarez Roncancio, Jesús David; Storino, Alejandra; Parise, Claudia; Planes, Estela; Gallego, Alfredo; Korol, Sonia Edith
Source:
Water, air, and soil pollution 2019 v.230 no.4 pp. 79
ISSN:
0049-6979
Subject:
microbial growth,   etc   ; Lactuca sativa; Pseudomonas; Selenastrum capricornutum; Vibrio; benzalkonium chloride; biodegradation; biofilm; chemical oxygen demand; clay; high performance liquid chromatography; industrial effluents; poly(vinyl chloride); remediation; spectroscopy; toxicity;     Show all 16 Subjects
Abstract:
... A previously isolated indigenous strain of Pseudomonas sp. was used to treat effluents, a synthetic and an industrial-containing benzalkonium chloride (BAC), in continuous upflow biofilm aerobic reactors. The reactor used to treat the synthetic effluent was constructed from Plexiglas® and filled with hollow polyvinyl chloride (PVC) cylinders as support material, whereas the one used to treat the i ...
DOI:
10.1007/s11270-019-4126-9