Construct · 3 fields · 4 citations

syneresis: one construct, many systems

One name. One construct. Different systems. One map.

● invariant · one construct, three systems Nearest construct by meaning·not indexed
gel contraction in water-laid sedimentgel contraction expelling wheysyneresis3 SYSTEMSSyneresisSCHERER · GEL SHRINKSSyneresis cracksSYNERESIS · CRACKSCurd syneresisWHEY · EXPELLED

Spokes are the systems the one construct recurs in; dashed arcs are shared lineage. Tap a field for its definition, unit, and measures.

1861Syneresis1981Syneresis cracks2000Curd syneresis
2026

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Colloid science

A gel contracts and squeezes out its own liquid

Syneresis is the spontaneous shrinkage of a gel as its network of bonds continues to form and draw tighter after the gel has set, forcing out some of the liquid it once held. The phenomenon belongs to the colloid science founded in Graham's 1861 Liquid diffusion applied to analysis, which first distinguished colloidal gels, and Scherer's 1989 Mechanics of syneresis I. Theory gave its quantitative account, treating the shrinkage as the network's elastic contraction balanced against the drag of liquid flowing out through the pores. The referent is a contracting gel network expelling its pore fluid, measured by the volume of liquid released over time, the same process that cracks water-laid sediments and weeps whey from cheese curd.[1][2]

Unit
The volume of pore liquid expelled as the gel network contracts over time
Recovery means
Not applicable
Measured by
Tracked by the volume of expelled liquid versus time and the network's elastic and permeability properties

Sedimentary geology

underwater shrinkage of freshly deposited clay gel that opens cracks in mud later filled by sediment.

Sedimentologists invoke the same construct to explain certain cracks in ancient mudrocks that formed underwater rather than by drying in air: a freshly deposited clay gel contracts as its particles reorganise, and the subaqueous shrinkage opens discontinuous, often spindle-shaped cracks later filled by sediment. Plummer and Gostin's 1981 Shrinkage cracks: Desiccation or synaeresis? weighed this interpretation against drying and set criteria for telling the two apart. It is the identical gel-contraction construct as in the chemist's beaker, read from the rock record and diagnosed by crack shape, filling, and the absence of exposure features rather than by a measured volume of expelled water.[3]

Unit
The subaqueous shrinkage of a sediment gel, recorded as crack geometry in the rock
Recovery means
Not applicable
Measured by
Inferred from crack morphology (spindle or lens shapes), passive fill, and lack of subaerial-exposure indicators

Food science

the contraction of a set milk gel that expels whey, central to cheesemaking and a defect in yoghurt.

In dairy science syneresis is the central step of cheesemaking and a defect in set yoghurt: once rennet or acid sets the milk into a gel, the casein network contracts and expels whey, and controlling how fast and how far it does so sets the moisture, and therefore the identity, of the finished cheese. Lodaite and colleagues' 2000 One-dimensional syneresis of rennet-induced gels measured this contraction directly in milk gels. It is the same gel-contraction-expelling-liquid construct as in colloid science and in cracking sediments, here harnessed to drive water out of curd and measured by the rate and extent of whey release.[4]

Unit
The rate and extent of whey expelled from a set milk gel
Recovery means
Not applicable
Measured by
Measured by whey volume released over time, curd shrinkage, and the resulting moisture content

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Nearby constructs

gelation3 fields · 3 citationsinvariant · one construct, three systemsparticle1 fields · 2 citationsanchor · a standalone constructconstruct6 fields · 7 citationsjingle · one name, six constructs

References

  1. Graham, T. (1861). Liquid diffusion applied to analysis. Philosophical Transactions of the Royal Society of London, 151, 183–224. https://doi.org/10.1098/rstl.1861.0011
  2. Scherer, G. W. (1989). Mechanics of syneresis I. Theory. Journal of Non-Crystalline Solids, 108(1), 18–27. https://doi.org/10.1016/0022-3093(89)90328-1
  3. Plummer, P. S., & Gostin, V. A. (1981). Shrinkage cracks: Desiccation or synaeresis? Journal of Sedimentary Research, 51(4), 1147–1156. https://doi.org/10.1306/212F7E4B-2B24-11D7-8648000102C1865D
  4. Lodaite, K., Östergren, K., Paulsson, M., & Dejmek, P. (2000). One-dimensional syneresis of rennet-induced gels. International Dairy Journal, 10(12), 829–834. https://doi.org/10.1016/S0958-6946(01)00027-9

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