Effect of Particle Size on Critical Coagulation Concentration

Hsu, Jyh‐Ping; Liu, Bo‐Tau

doi:10.1006/jcis.1997.5275

Cited by 37 publications

(41 citation statements)

References 2 publications

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“…In this study, LM milk was found to have a shorter RCT, that is, it coagulated faster than SM milk (Figure ). Differences in coagulation time can be explained by two factors: (a) the efficacy of cleaving κ‐casein into glycomacropeptide (GMP) and para‐κ‐casein by the action of rennet (Dalgleish, ), and (b) meeting the required critical coagulation concentration (CCC), that is, the lowest concentration of particles needed to induce coagulation (Hsu & Liu, ). After removal of the hydrophilic GMP, destabilized particles will aggregate in the milk serum, leading to formation of assemblages when the CCC is met.…”

Section: Resultsmentioning

confidence: 99%

“…As a consequence of the larger relative surface area of SM, it may take comparatively longer to remove the amount of GMP required for aggregation to be initiated. According to Hsu and Liu (), smaller particles require a higher CCC to coagulate. The lower net coagulation rate is caused by a lower colloiding velocity near small particle surfaces and deflocculation of coagulated particles because of the shallow primary minimum of the interparticle potential (Higashitani, Kondo, & Hatade, ).…”

Section: Resultsmentioning

confidence: 99%

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Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Priyashantha

Lundh

Höjer

et al. 2019

Journal of Texture Studies

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Interactive effects of casein micelle size and milk calcium and citrate content on rennet‐induced coagulation were investigated. Milk samples containing small (SM) and large (LM) micelles, obtained from individual Holstein cows, were modified by addition of calcium and/or citrate and milk coagulation properties were evaluated in a full factorial design. The results showed that LM milk had a higher relative proportion of casein, coagulated faster, and resulted in a stronger gel than SM milk. Addition of calcium slightly decreased casein micelle size, while addition of citrate slightly increased micelle size. Calcium addition resulted in a shorter coagulation time and the strongest gels, while citrate addition increased the coagulation time and resulted in the weakest gels. Addition of calcium and citrate in combination resulted in intermediate coagulation properties. The interactive effect of micelle size and citrate was significant for gel strength. Microstructural differences between the milk gels were consistent with the rheological properties, for example, the micrographs revealed that a more homogeneous network was formed when calcium was added, resulting in a stronger gel. A more inhomogeneous network structure was formed when citrate was added, resulting in a weaker gel. Thus, variations in casein micelle size and in calcium and citrate content influence rennet‐induced coagulation in bovine milk. The calcium and citrate contents in Swedish milk have changed over time, whereby calcium content has increased and citrate content has decreased. In practical cheese making, calcium is added to cheese milk, most likely altering the role of inherent citrate and possibly influencing casein micelle size. The observed interaction effect between casein micelle size and citrate in this study, suggests that larger micelles with moderate citrate level will result in firmer gels, whereas a higher citrate content reduced gel strength more in case of large than SM. Since firmer gels are likely to retain more protein and fat than less firmer gels, this interaction effect could have implications in practical cheese production.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Priyashantha

Lundh

Höjer

et al. 2019

Journal of Texture Studies

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“…Cyclic voltammogram (CV) in Figure A displays the usual oxidation/reduction (anodic/cathodic) peaks of well‐crystallized HT‐LiCoO 2 at 3.99/3.85, 4.08/4.03, and 4.19/4.15 V versus Li + /Li, which are characteristic of the R ‐3 m phase and hexagonal transitions: O3(I), O3(II), and monoclinic, respectively . These phase transformations are also detected in the galvanostatic capacity profiles of LiCoU45‐700 film at C/2 rate between 4.2 and 3.0 V versus Li + /Li (galvanostatic cycling with potential limitation curves, in Figure B).…”

Section: Resultsmentioning

confidence: 99%

Water‐Based Paintable LiCoO₂Microelectrodes: A High‐Rate Li‐Ion Battery Free of Conductive and Binder Additives

Martínez

Exantus

Dallel

et al. 2019

Adv Materials Technologies

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A simple, low‐cost, and environmentally friendly water‐based colloidal spray‐painting process is developed to obtain mechanically stable microelectrodes of pure LiCoO2 on stainless steel disks, which display reversible high‐rate discharge capacity and good cyclability. By using a simple nanostructuring process with commercially available LiCoO2, the use of dispersant, conductive, and binder additives during the electrode preparation is completely avoided. The nanostructuring approach is based on: i) planetary ball milling and annealing of LiCoO2 microparticles and ii) LiCoO2 surface modification through dissociative H2O adsorption during contact with air‐ and water‐based colloid preparation. The coating technique involves: i) water‐based colloid preparation, ii) spray‐coating, and iii) post‐treatment (drying and calcination) processes. The effects of particle size distribution, shape, crystallinity, specific surface area, and LiCoO2 surface modification on the electrode architecture (roughness, thickness, packing density, and porosity) are studied, together with their impact on the final electrochemical performances of batteries assembled with such a LiCoO2 electrode.

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“…[21][22][23] The total interaction energy (V T ) is defined as the sum of attractive van der Waals (V A ) and repulsive electric double layer interactions (V R ), and additional steric hindrance (V S ) for PVP-AgNPs. Where χ, Γ and t are the Flory polymer/solvent interaction parameter (~0.5 for PVP/water), adsorbed amount (2.8-8.4 mg/m 2 ), and layer thickness (2.6 nm), respectively.…”

Section: (4)mentioning

confidence: 99%

Simple Analysis for Interaction between Nanoparticles and Dye-Containing Vesicles as a Biomimetic Cell-Membrane

Shin

Umh²,

Kim³

2013

Bulletin of the Korean Chemical Society

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Some cytotoxicity studies for the interpretation of the interaction between nanoparticles and cells are nonmechanistic and time-consuming. Therefore, non-biological screening methods, which are faster and simpler than in-vivo and in-vitro methods, are required as alternatives to current cytotoxicity tests. Here, we proposed a simple screening method for the analysis of the interaction between several AgNPs (bare-, citrate-, and polyvinylpyrrolidone-coating) and dye-containing vesicles acting as a biomimetic cell-membrane. The interaction between AgNPs and vesicles could be evaluated readily by UV-vis spectra. Absorbance deviation in UV-vis spectra revealed a large attraction between neighboring particles and vesicles. This was confirmed by (Derjagin, Landau, Verwey, and Overbeek) theory and DMF (dark-field microscopy) analysis. This proposed method might be useful for analyzing the cytotoxicity of nanoparticles with cell-membranes instead of in vitro or in vivo cytotoxicity tests.

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Effect of Particle Size on Critical Coagulation Concentration

Cited by 37 publications

References 2 publications

Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Water‐Based Paintable LiCoO₂Microelectrodes: A High‐Rate Li‐Ion Battery Free of Conductive and Binder Additives

Simple Analysis for Interaction between Nanoparticles and Dye-Containing Vesicles as a Biomimetic Cell-Membrane

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Effect of Particle Size on Critical Coagulation Concentration

Cited by 37 publications

References 2 publications

Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Interactive effects of casein micelle size and calcium and citrate content on rennet‐induced coagulation in bovine milk

Water‐Based Paintable LiCoO2Microelectrodes: A High‐Rate Li‐Ion Battery Free of Conductive and Binder Additives

Simple Analysis for Interaction between Nanoparticles and Dye-Containing Vesicles as a Biomimetic Cell-Membrane

Contact Info

Product

Resources

About

Water‐Based Paintable LiCoO₂Microelectrodes: A High‐Rate Li‐Ion Battery Free of Conductive and Binder Additives