Ultrasonic analysis of heat-induced coagulation in calcium fortified milk

Smyth, Cormac; Dawson, Kenneth A.; Buckin, Vitaly

doi:10.1007/3-540-48953-3_44

Cited by 18 publications

(6 citation statements)

References 19 publications

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“…A variety of pharmaceutical and biochemical structures have previously been successfully characterised using HR-US. These include monitoring of immunochemical reactions (Buckin and Kudryashov, 2002), gelatinisation of starch (Lehmann et al, 2004), crystallisation of proteins and the characterisation and determination of particle size of emulsions (Buckin et al, 2002a,b;Smyth et al, 2004) and other micelle systems (Buckin et al, 2002a,b;Kudryashov et al, 1998;Smyth et al, 1999).…”

Section: Introductionmentioning

confidence: 98%

Analysis of phase diagram and microstructural transitions in an ethyl oleate/water/Tween 80/Span 20 microemulsion system using high-resolution ultrasonic spectroscopy

Hickey

Hagan²,

Kudryashov

et al. 2010

International Journal of Pharmaceutics

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Section: Introductionmentioning

confidence: 98%

Analysis of phase diagram and microstructural transitions in an ethyl oleate/water/Tween 80/Span 20 microemulsion system using high-resolution ultrasonic spectroscopy

Hickey

Hagan²,

Kudryashov

et al. 2010

International Journal of Pharmaceutics

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“…HR-US has successfully been used for the characterization of a number of pharmaceutical and biochemical systems. These include the monitoring of immunochemical reactions, gelatinization of starch, crystallization of proteins, the characterization and determination of particle size of emulsions, , and other micelle systems. − This technique enables the application of a titration regime, which involves stirring the sample within the ultrasound cell while adding aliquots of the dispersed phase, thereby saving time and reducing errors in sample preparation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Phase Diagram and Microstructural Transitions in Phospholipid Microemulsion Systems Using High-Resolution Ultrasonic Spectroscopy

et al. 2006

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In the present work, high-resolution ultrasonic spectroscopy was applied to analyze a pseudoternary phase diagram for mixtures consisting of water/isopropyl myristate/Epikuron 200 and a cosurfactant (n-propanol). Changes in the ultrasonic velocity and attenuation in the megahertz frequency range were measured in the course of titration of the oil/surfactant/cosurfactant mixture with water at 25 degrees C. The ultrasonic titration profiles showed several phase transitions in the samples, which allowed the construction of an "ultrasonic" phase diagram. Quantitative analysis of the ultrasonic parameters enabled the characterization of various phases (swollen micelles, microemulsion, coarse emulsion, and pseudo-bicontinuous) as well as the evaluation of the state of the water and the particle size. The particle size obtained for the microemulsion region ranged from 5 to 14 nm over the measured concentrations of water/isopropyl myristate/Epikuron 200 and n-propanol, which agreed well with the previous literature data.

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“…The former is determined by the density and elastic properties of the sample and thus can be expressed in terms of compressibility. This parameter is extremely sensitive to the intermolecular interactions, molecular organization, and composition of the analyzed medium 2–7. The energy losses during compressions and decompressions in ultrasonic waves determine the attenuation.…”

Section: Introductionmentioning

confidence: 99%

Exploration of high‐resolution ultrasonic spectroscopy as an analytical tool to study demixing and remixing in poly(N‐isopropyl acrylamide)/water solutions

Durme

Delellio

Kudryashov³

et al. 2005

J Polym Sci B Polym Phys

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The ultrasonic properties of poly(N‐isopropyl acrylamide) (PNIPAM)/water solutions, determined with high‐resolution ultrasonic spectroscopy (HR‐US), change during demixing and remixing. All HR‐US measurements are discussed with respect to modulated temperature differential scanning calorimetry results. The lower critical solution temperature type of phase behavior, in combination with the glass‐transition/composition curve of PNIPAM/water, determines the evolution of the ultrasonic signals. Three different temperature regions can be distinguished: a homogeneous region and a heterogeneous region, the latter subdivided into zones without and with interference of partial vitrification of the PNIPAM‐rich phase. During phase separation, the ultrasonic velocity decreases because of a change in the hydration structure around the polymer chains, whereas the ultrasonic attenuation increases as aggregation sets in. Isothermal measurements clearly show time dependence for both the velocity and the attenuation. The observed timescales are different and can be related to a changing polymer/water interphase and aggregate formation, respectively. Partial vitrification of the PNIPAM‐rich phase slows the demixing kinetics and especially the remixing kinetics. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 1283–1295, 2005

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Ultrasonic analysis of heat-induced coagulation in calcium fortified milk

Cited by 18 publications

References 19 publications

Analysis of phase diagram and microstructural transitions in an ethyl oleate/water/Tween 80/Span 20 microemulsion system using high-resolution ultrasonic spectroscopy

Analysis of phase diagram and microstructural transitions in an ethyl oleate/water/Tween 80/Span 20 microemulsion system using high-resolution ultrasonic spectroscopy

Analysis of the Phase Diagram and Microstructural Transitions in Phospholipid Microemulsion Systems Using High-Resolution Ultrasonic Spectroscopy

Exploration of high‐resolution ultrasonic spectroscopy as an analytical tool to study demixing and remixing in poly(N‐isopropyl acrylamide)/water solutions

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