Synchrotron X-ray tomographic quantification of microstructural evolution in ice cream-a multi-phase soft solid

Guo, Enyu, Zeng, Guang, Kazantsev, Daniil, Rockett, Peter, Bent, Julian, Kirkland, Mark, Van Dalen, Gerard, Eastwood, David S., StJohn, David and Lee, Peter D. (2017) Synchrotron X-ray tomographic quantification of microstructural evolution in ice cream-a multi-phase soft solid. RSC Advances, 7 25: 15561-15573. doi:10.1039/c7ra00642j


Author Guo, Enyu
Zeng, Guang
Kazantsev, Daniil
Rockett, Peter
Bent, Julian
Kirkland, Mark
Van Dalen, Gerard
Eastwood, David S.
StJohn, David
Lee, Peter D.
Title Synchrotron X-ray tomographic quantification of microstructural evolution in ice cream-a multi-phase soft solid
Journal name RSC Advances   Check publisher's open access policy
ISSN 2046-2069
Publication date 2017-03-01
Sub-type Article (original research)
DOI 10.1039/c7ra00642j
Open Access Status Not yet assessed
Volume 7
Issue 25
Start page 15561
End page 15573
Total pages 13
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2018
Language eng
Abstract Microstructural evolution in soft matter directly influences not only the material's mechanical and functional properties, but also our perception of that material's taste. Using synchrotron X-ray tomography and cryo-SEM we investigated the time-temperature evolution of ice cream's microstructure. This was enabled via three advances in synchrotron tomography: a bespoke tomography cold stage; improvements in pink beam in line phase contrast; and a novel image processing strategy for reconstructing and denoising in line phase contrast tomographic images. Using these three advances, we qualitatively and quantitatively investigated the effect of thermal changes on the ice cream's microstructure after 0, 7 and 14 thermal cycles between -15 and -5 °C. The results demonstrate the effect of thermal cycling on the coarsening of both the air cells and ice crystals in ice cream. The growth of ice crystals almost ceases after 7 thermal cycles when they approach the size of the walls between air cells, while air cells continue to coarsen, forming interconnected channels. We demonstrate that the tomographic volumes provide a statistically more representative sample than cryo-SEM, and elucidate the three dimensional morphology and connectivity of phases. This resulted in new insights including the role of air cells in limiting ice crystal coarsening.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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