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You searched for: Subject "centrifugation" Remove constraint Subject: "centrifugation"
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1. Effect of ionic strength, pH and temperature on the behaviour of re-dispersed BC:CMC - A comparative study with xanthan gum

Author:
D. Martins; F. Dourado; M. Gama
Source:
Food hydrocolloids 2023 v.135 pp. 108163
ISSN:
0268-005X
Subject:
centrifugation,   etc   ; Helianthus annuus; aqueous solutions; carboxymethylcellulose; comparative study; hydrocolloids; ionic strength; oils; pH; separation; temperature; viscosity; xanthan gum;     Show all 13 Subjects
Abstract:
... The rheological performance of bacterial cellulose and carboxymethyl cellulose (BC:CMC) dry formulations with mass ratios of 1:1, 1:0.75 and 1:0.5 was compared with that of a commercial xanthan gum. The zero-shear viscosity and the yield stress of these hydrocolloids, at concentrations ranging from 0.001% to 0.5% (w/w), were determined by fitting the Cross and Herschel-Bulkley models to the flow c ...
DOI:
10.1016/j.foodhyd.2022.108163

2. Novel amide- and imide-co-polymers modified with sulfathiazole as efficient chelator for selective extraction, pre-concentration and determination of trace inorganic antimony (as Sb(III)) from edible vegetable oils by ultrasound assisted-cloud point extraction coupled to micro-volume UV-spectrophotometry

Author:
H.B. Zengin; R. Gürkan
Source:
Journal of food composition and analysis 2023 v.115 pp. 104931
ISSN:
0889-1575
Subject:
centrifugation,   etc   ; absorbance; antimony; calibration; chelating agents; composite polymers; food composition; isopropyl alcohol; nonionic surfactants; pH; solvents; spectrophotometers; sulfathiazole; tautomerization; tetrahydrofuran; ultrasonics; vegetables;     Show all 17 Subjects
Abstract:
... The study described the synthesis, characterization, and application of newly prepared sulfathiazole-modified amide/imide co-polymers for the extraction of trace Sb(III) from edible vegetable oils. The method was based on the pH-dependent complexation between Sb(III) and chelators as a result of charge transfer via tautomerization in presence of the mixed ionic surfactants in 5%(v/v) 2-propanol, 1 ...
DOI:
10.1016/j.jfca.2022.104931

3. Peptide-modified carbon dot aggregates for ultrasensitive detection of lipopolysaccharide through aggregation-induced emission enhancement

Author:
Manivannan Madhu; A. Santhana Krishna Kumar; Chi-Yu Lu; Wei-Lung Tseng
Source:
Talanta 2023 v.253 pp. 123851
ISSN:
0039-9140
Subject:
centrifugation,   etc   ; Escherichia coli; carbon; citric acid; detection limit; fluorescence; fluorescent dyes; hot water treatment; lipopolysaccharides; pH; peptides; signal-to-noise ratio; ultrafiltration; urea;     Show all 14 Subjects
Abstract:
... This study fabricated yellow-emitting CDs (Y-CDs) by hydrothermal treatment of citric acid and urea and applied them as a fluorescence turn-on platform for sensitive and selective detection of lipopolysaccharide (LPS) based on the non-shifted AIEE of peptide-stabilized CD aggregates. The designed peptide (named K3) consisting of aggregation-active and LPS-recognition units triggered the aggregatio ...
DOI:
10.1016/j.talanta.2022.123851

4. Insight into interfacial adsorption behavior of high-density lipoprotein hydrolysates regulated by carboxymethyl dextrin and in vitro digestibility of curcumin loaded high internal phase emulsions

Author:
Bao Zhang; Wen-Jie Liu; Ting-Shi He; Bao-Cai Xu; Qiu-Tao Xie
Source:
Food chemistry 2023 v.400 pp. 134006
ISSN:
0308-8146
Subject:
centrifugation,   etc   ; adsorption; bioavailability; curcumin; dextrins; digestibility; electrostatic interactions; food chemistry; high density lipoprotein; hydrolysates; ionic strength; micelles; oils; pH; particle size; trypsin; viscosity;     Show all 17 Subjects
Abstract:
... The interaction between high-density lipoprotein hydrolysate hydrolyzed by trypsin (EHT) and carboxymethyl dextrin (CMD) at pH 7.0, and in vitro digestibility of high internal phase emulsions (HIPEs) were studied. The particle size of EHT/CMD mixtures increased from 207.2 nm to 1229.6 nm with increase of the ratio of EHT to CMD from 8:1 to 1:2. The proportion of EHT adsorbed on the surface increas ...
DOI:
10.1016/j.foodchem.2022.134006

5. Mayonnaise-like high internal phase Pickering emulsions stabilized by co-assembled phosphorylated perilla protein isolate and chitosan for extrusion 3D printing application

Author:
Qiaoli Zhao; Liuping Fan; Yuanfa Liu; Jinwei Li
Source:
Food hydrocolloids 2023 v.135 pp. 108133
ISSN:
0268-005X
Subject:
centrifugation,   etc   ; adsorption; chitosan; electrostatic interactions; encapsulation; extrusion; heat treatment; hydrocolloids; hydrogen; hydrophobicity; nanoparticles; oil-water interface; particle size; protein isolates; storage time; surface tension; viscoelasticity; viscosity; wettability;     Show all 19 Subjects
Abstract:
... In this study, the feasibility of the mayonnaise-like high internal phase Pickering emulsions (HIPPEs) prepared by phosphorylated perilla protein isolate-chitosan composite nanoparticles (LZPI-CS CNPs) as three-dimensional (3D) printing inks and lipid-soluble β-carotene delivery vehicles was explored. The spherical LZPI-CS CNPs (232–336 nm in particle size) were formed by hydrogen bonds and electr ...
DOI:
10.1016/j.foodhyd.2022.108133

6. Can blood progesterone concentration identify non‐pregnant buffaloes to support oestrous resynchronization?

Author:
Viviane M. Codognoto; Fabiana F. Souza; Letícia C. Salgado; Guilherme Rizzoto; Paulo H. Yamada; Nayara F. S. Marques; Nélcio A. T. Carvalho; Ariane Dantas; Ana Victória Pereira Mesquita; João C. P. Ferreira; Eunice Oba
Source:
Reproduction in domestic animals 2022 v.57 no.6 pp. 673-677
ISSN:
0936-6768
Subject:
centrifugation,   etc   ; progesterone; reproduction;     Show all 3 Subjects
Abstract:
... This study compared the plasma progesterone concentrations from pregnant and non‐pregnant buffaloes to identify non‐pregnant females and submit cows earlier to oestrous resynchronization. Forty‐four multiparous mix‐breed Murrah buffaloes were selected for the study. The cows were subjected to hormonal oestrous synchronization and separated into 4 groups, P12 (pregnant, n = 8) and P18 (n = 8) at 12 ...
DOI:
10.1111/rda.14108

7. Effect of contamination from direct sonication on characterization of nanofluid stability

Author:
Anthony Hutin; Marcio S. Carvalho
Source:
Powder technology 2022 v.399 pp. 117157
ISSN:
0032-5910
Subject:
centrifugation,   etc   ; alloys; nanofluids; sonication;     Show all 4 Subjects
Abstract:
... Direct sonication with probe is one of the most efficient way to disperse nanoparticles and to obtain a stable nanofluid. However, tip erosion during the sonication process may contaminate the dispersion and alter the characterization of the nanofluid. The contaminating alloy particles are generally bigger than the nanoparticles so they will segregate first and then alter the stability tests condu ...
DOI:
10.1016/j.powtec.2022.117157

8. Method for CaOx crystals isolation from plant leaves

Author:
Ivan T. Cerritos-Castro; Araceli Patrón-Soberano; Ana P. Barba de la Rosa
Source:
MethodsX 2022 v.9 pp. 101798
ISSN:
2215-0161
Subject:
centrifugation,   etc   ; calcium oxalate; filtration; sodium;     Show all 4 Subjects
Abstract:
... Although calcium oxalate (CaOx) crystals are present in many plants they are poorly studied. A possible limitation is the lack of methods for CaOx crystals isolation at high concentration and high purity, which is required for the analysis of their associated biomolecules such as proteins. To our knowledge, there are only four works that have isolated proteins from CaOx crystals. Those methods bas ...
DOI:
10.1016/j.mex.2022.101798

9. Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor: A pilot-scale harvesting study

Author:
Simona Lucakova; Irena Branyikova; Sara Kovacikova; Jiri Masojidek; Karolina Ranglova; Tomas Branyik; Marek C. Ruzicka
Source:
Bioresource technology 2022 v.351 pp. 126996
ISSN:
0960-8524
Subject:
centrifugation,   etc   ; Chlorella vulgaris; biomass; electrocoagulation; energy; microalgae;     Show all 6 Subjects
Abstract:
... The most frequently used method to harvest microalgae on an industrial scale is centrifugation, although this has very high energy costs. To reduce these costs, a continuous electrocoagulation process for harvesting Chlorella vulgaris was developed and tested using a pilot-scale 111 L working volume device consisting of an electrolyser with iron electrodes, aggregation channel and lamellar settler ...
DOI:
10.1016/j.biortech.2022.126996

10. Simulation and visualization of nano SiO2 - water and decanoic acid-modified nano CeO2 - cyclohexane dispersions under a centrifugal field

Author:
Kotaro Oshima; Natsuki Sato; Kentaro Nakamura; Haixin Guo; Richard Lee Smith
Source:
Colloids and surfaces 2022 v.650 pp. 129558
ISSN:
0927-7757
Subject:
centrifugation,   etc   ; cyclohexanes; diffusivity; dispersibility; models; particle size; solvation;     Show all 7 Subjects
Abstract:
... This work examines simulation and visualization methods for describing settling characteristics of nanoparticles (NPs) of (60, 100 or 200) nm SiO₂ NPs in water and 8.7 nm decanoic acid-modified CeO₂ (C₁₀CeO₂) NPs in cyclohexane measured experimentally under centrifugal fields. Analytical centrifugation of NP dispersions at relative centrifugal fields (RCF) of up to 2325 g at 20 °C was used to obta ...
DOI:
10.1016/j.colsurfa.2022.129558

11. Extraction and quantification of metal-containing nanoparticles in marine shellfish based on single particle inductively coupled plasma-mass spectrometry technique

Author:
Yuan Sun; Yi Yang; Fei-Yun Tou; Zuo-Shun Niu; Xing-Pan Guo; Chang Liu; Jia Yan; Jia-Yuan Wu; Miao Xu; Li-Jun Hou; Min Liu
Source:
Journal of hazardous materials 2022 v.424 pp. 127383
ISSN:
0304-3894
Subject:
centrifugation,   etc   ; bioaccumulation; electron microscopy; shellfish; tetramethylammonium compounds; titanium dioxide;     Show all 6 Subjects
Abstract:
... Quantitative characterization of nanoparticles (NPs) in marine shellfish is critical to understanding the risks of bio-accumulation. Based on single particle (sp)ICP-MS and electron microscopy, a standardized protocol was developed to extract Ag, Au, and indigenous Ti-containing NPs from mussels. The optimal parameters are: dry sample extraction with tetramethylammonium hydroxide (TMAH), 5% (v/v) ...
DOI:
10.1016/j.jhazmat.2021.127383

12. Quantification of humic and fulvic acids in humate ores, doc, humified materials and humic substance-containing commercial products

Author:
Lamar Richard T.; Monda Hiarhi
Source:
Journal of visualized experiments 2022 no.181 pp. e61233
ISSN:
1940-087X
Subject:
centrifugation,   etc   ; ash content; fulvic acids; hydrophilicity; hydrophobicity; ovens; pH;     Show all 7 Subjects
Abstract:
... The purpose of this method is to provide an accurate and precise concentration of humic (HA) and/or fulvic acids (FA) in soft coals, humic ores and shales, peats, composts and humic substance-containing commercial products. The method is based on the alkaline extraction of test materials, using 0.1 N NaOH as an extractant, and separation of the alkaline soluble humic substances (HS) from nonsolubl ...
DOI:
10.3791/61233

13. A novel separation and preconcentration methodology based on direct immersion dual-drop microextraction for speciation of inorganic chromium in environmental water samples

Author:
Juntao Yan; Chenghao Zhang; Chunlei Wang; Dengbo Lu; Shizhong Chen
Source:
Talanta 2022 pp. 123902
ISSN:
0039-9140
Subject:
centrifugation,   etc   ; atomic absorption spectrometry; chromium; filtration; microextraction; pH; risk;     Show all 7 Subjects
Abstract:
... In this study, for the first time, a novel separation and preconcentration method of direct immersion dual-drop microextraction (DIDDME) was proposed for the species of inorganic chromium (Cr(III) and Cr(VI)) followed by graphite furnace atomic absorption spectrometry detection. The methodology is based on that two organic drops hold on the needle tips of microsyringes were concurrently immersed i ...
DOI:
10.1016/j.talanta.2022.123902

14. Amyloid fishing: β-Amyloid adsorption using tailor-made coated titania nanoparticles

Author:
Elad Arad; Raz Jelinek; Hanna Rapaport
Source:
Colloids and surfaces 2022 v.212 pp. 112374
ISSN:
0927-7765
Subject:
centrifugation,   etc   ; adsorption; amyloid; catechol; dyes; propionic acid; titanium dioxide;     Show all 7 Subjects
Abstract:
... Amyloidoses are a family of diseases characterized by abnormal protein folding that leads to fibril aggregates, amyloids. Extensive research efforts are devoted to developing inhibitors to amyloid aggregates. Here we set to explore functionalized titania (TiO₂) nanoparticles (NPs) as potential amyloid inhibiting agents. TiO₂ NPs were coated by a catechol derivative, dihydroxy-phenylalanine propano ...
DOI:
10.1016/j.colsurfb.2022.112374

15. Delamination of MXenes using bovine serum albumin

Author:
Mykola Seredych; Kathleen Maleski; Tyler S. Mathis; Yury Gogotsi
Source:
Colloids and surfaces 2022 v.641 pp. 128580
ISSN:
0927-7757
Subject:
centrifugation,   etc   ; adsorption; bovine serum albumin; delamination; drugs; medicine; nanosheets;     Show all 7 Subjects
Abstract:
... Delamination of two-dimensional materials is a requisite step for exploiting their unique properties. Herein, we report on the formation of stable colloidal solutions of Ti₃C₂ and Mo₂Ti₂C₃ MXene nanosheets by the dispersion and electrostatic exfoliation of stacked multilayer MXenes in the presence of albumin. Delamination of multilayered MXenes into atomically thin nanosheets resulted in stable co ...
DOI:
10.1016/j.colsurfa.2022.128580

16. Measurement of particle adhesion force and effective contact radius via centrifuge equipped with horizontal and vertical substrates

Author:
Yasuhiro Shimada; Motohiro Tsubota; Shuji Matsusaka
Source:
Powder technology 2022 v.397 pp. 117103
ISSN:
0032-5910
Subject:
centrifugation,   etc   ; adhesion; models; particle size; relative humidity; surface roughness;     Show all 6 Subjects
Abstract:
... A centrifugal method was used to analyze and evaluate particle–surface interactions. Particles with count median diameters of 9.7, 14.5, and 32.8 μm were removed from horizontally and vertically mounted metal substrates. A point-mass model is conventionally used to analyze the forces exerted on particles during centrifugation. Conversely, in this study, a rigid-body model was employed considering ...
DOI:
10.1016/j.powtec.2021.117103

17. Insect processing for food and feed: A review of drying methods

Author:
Oleksii Parniakov; Maryna Mikhrovska; Artur Wiktor; Martina Alles; Dusan Ristic; Radosław Bogusz; Małgorzata Nowacka; Sakamon Devahastin; Arun Mujumdar; Volker Heinz; Sergiy Smetana
Source:
Drying technology 2022 v.40 no.8 pp. 1500-1513
ISSN:
1532-2300
Subject:
centrifugation,   etc   ; biomass; environmental sustainability; feed industry; fractionation; interdisciplinary research; Europe;     Show all 7 Subjects
Abstract:
... Production of insects for food and feed purposes is rapidly emerging in Europe, filling an important niche of locally supplied protein and fat sources with improved environmental sustainability. Processing of insect biomass is becoming of utmost importance to fulfill the requirements for safe edible biomass and find efficient ways to reduce potential biological and chemical hazards. Current method ...
DOI:
10.1080/07373937.2021.1962905

18. A method for purifying nanoparticles using cationic modified monoliths and aqueous elution

Author:
Masaru Kato; Misa Yamaguchi; Tomoka Morita; Noriko Watanabe; Shigenori Ota; Eiichi Yamamoto
Source:
Journal of chromatography 2022 v.1664 pp. 462802
ISSN:
0021-9673
Subject:
centrifugation,   etc   ; albumins; chromatography; doxorubicin; exosomes; nanomedicine; oligonucleotides; pH; silica; therapeutics;     Show all 10 Subjects
Abstract:
... Nanoparticles are widely used in the medical field for diagnosis and therapy. In particular, the use of nanoparticles containing vaccines has spread rapidly; hence, ensuring nanoparticle safety and minimizing their side effects have become important concerns worldwide. In this study, we used three types (NH₂, poly-Lys, and trimethylaminopropyl) of cationic modified silica monoliths with cylindrica ...
DOI:
10.1016/j.chroma.2021.462802

19. Dumbbell structure probe-triggered rolling circle amplification (RCA)-based detection scaffold for sensitive and specific neonatal infection-related small extracellular vesicle (sEV) detection

Author:
Zeping Yang; Dong She; Chunhong Sun; Mingwei Gong; Yuan Rong
Source:
Analytical methods 2022 v.14 no.15 pp. 1534-1539
ISSN:
1759-9679
Subject:
centrifugation,   etc   ; applied research; biomarkers; cell communication; early diagnosis; fluorescence; oligonucleotides;     Show all 7 Subjects
Abstract:
... Small extracellular vesicles (sEVs) have been reported to play important roles in cell-to-cell communication and are promising biomarkers for the early diagnosis of infections. Therefore, it is in high demand to develop a method that can integrate easy-to-operate sEV isolation and sensitive quantification. We herein propose a novel detection scaffold for sEV isolation via low-speed centrifugation ...
DOI:
10.1039/d2ay00019a

20. Rapid, inexpensive fabrication of electrophoretic microdevices for fluorescence detection

Author:
Daniel A. Nelson; Brandon L. Thompson; An‐Chi Scott; Renna Nouwairi; Christopher Birch; Jacquelyn A. DuVall; Delphine Le Roux; Jingyi Li; Brian E. Root; James P. Landers
Source:
Electrophoresis 2022 v.43 no.16-17 pp. 1746-1754
ISSN:
0173-0835
Subject:
centrifugation,   etc   ; DNA; composite polymers; durability; electrophoresis; fluorescence; olefin; polyethylene terephthalates;     Show all 8 Subjects
Abstract:
... The laser print, cut, and laminate (PCL) method for microfluidic device fabrication can be leveraged for rapid and inexpensive prototyping of electrophoretic microchips useful for optimizing separation conditions. The rapid prototyping capability allows the evaluation of fluidic architecture, applied fields, reagent concentrations, and sieving matrix, all within the context of using fluorescence‐c ...
DOI:
10.1002/elps.202200090