2017
DOI: 10.1038/srep41185
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Impact of saccharides on the drying kinetics of agarose gels measured by in-situ interferometry

Abstract: Agarose gels are viscoelastic soft solids that display a porous microstructure filled with water at 90% w/w or more. Despite an extensive use in food industry and microbiology, little is known about the drying kinetics of such squishy solids, which suffers from a lack of time-resolved local measurements. Moreover, only scattered empirical observations are available on the role of the gel composition on the drying kinetics. Here we study by in-situ interferometry the drying of agarose gels of various compositio… Show more

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Cited by 17 publications
(5 citation statements)
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“…Image stacks were recorded at a frequency adjustable from 50 frames per second down to 1 image per minute depending on the duration of the compression test. The image acquisition started as soon as the upper plate moves down and image stacks were processed using a homemade plugin developed in java with the image processing software Image J (Schneider et al 2012;Mao et al 2017a) to determine the Poisson's ratio  of the hydrogel within the limit of low compressive strains % 5 0    . Fig.…”
Section: Poisson's Coefficientmentioning
confidence: 99%
See 1 more Smart Citation
“…Image stacks were recorded at a frequency adjustable from 50 frames per second down to 1 image per minute depending on the duration of the compression test. The image acquisition started as soon as the upper plate moves down and image stacks were processed using a homemade plugin developed in java with the image processing software Image J (Schneider et al 2012;Mao et al 2017a) to determine the Poisson's ratio  of the hydrogel within the limit of low compressive strains % 5 0    . Fig.…”
Section: Poisson's Coefficientmentioning
confidence: 99%
“…. Changes in the volume of the hydrogel under compression were further monitored with a digital camera using a homemade spatiotemporal analysis (Mao et al 2017a) to determine the Poisson's ratio in the linear regime. The accuracy of unconfined uniaxial compression experiments requires a precise adjustment of the parallelism of the compression plates as well as pre-molded hydrogels with perfectly controlled cylindrical geometry.…”
Section: Introductionmentioning
confidence: 99%
“…The drying of quiescent gels has been extensively investigated using different materials (gellan gum (Bonifacio, et al, 2017;Cassanelli, et al, 2018), starch (De Marco & Reverchon, 2017;Franco, et al, 2018), cellulose (Jin, et al, 2004;Long, et al, 2018), agarose (Mao, et al, 2017), silica (Smirnova, et al, 2003), chitosan (Cardea, et al, 2010), etc.) and techniques (airdrying, freeze-drying, supercritical carbon dioxide drying, microwave drying (Cassanelli, et al, 2019;Hu, et al, 2013)).…”
Section: Introductionmentioning
confidence: 99%
“…Agar will lose its water content through evaporation when exposed to ambient resulting in shrinkage. Mechanical stress is generated in agar during shrinkage which causes morphological deformation such as surface wrinkling and crack formation 26 . Water loss affects local micro-environment in the hydrocolloid which results in changes in the mechanical properties of agar.…”
Section: Discussionmentioning
confidence: 99%