Elucidating enzyme-based cleaning of protein soils (gelatine and egg yolk) using a scanning fluid dynamic gauge

Gordon, Patrick W.; Brooker, Anju; Chew, Y.M. John; Letzelter, N.; York, David; Wilson, D.I.

doi:10.1016/j.cherd.2011.07.007

Cited by 17 publications

(10 citation statements)

References 11 publications

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“…Gordon et al 3 prepared protein films by baking egg yolk and calculated the cleaning efficiency on the basis of the thickness of the films. Like these studies, the method of quantifying protein and the protein heating processes are major subjects in this field, but no standard test for measuring removal of protein soils adhered on solid surfaces has been developed.…”

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confidence: 99%

Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

2013

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mentioning

confidence: 99%

Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

2013

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“…Measurements are made continuously, and the user defines in advance the position and times at which gauging measurements are made. This allows:Measurements at multiple points on the same sample to evaluate sample homogeneity.Testing of multiple samples under identical experimental conditions.Collection of large quantities of data.The sFDG device is designed such that the shear stresses that the gauging liquid imposes on the deposit (5 to 100 Pa) are comparable to those generated in common cleaning-in-place operations [23]. With water alone, this mechanical force was not sufficient to cause any deformation for the polymerised food lipids encountered in this study.…”

Section: Methodsmentioning

confidence: 99%

“…The sFDG device is designed such that the shear stresses that the gauging liquid imposes on the deposit ( $ 5 to 100 Pa) are comparable to those generated in common cleaning-in-place operations [23]. With water alone, this mechanical force was not sufficient to cause any deformation for the polymerised food lipids encountered in this study.…”

Section: The Scanning Fluid Dynamic Gauging (Sfdg) Devicementioning

confidence: 97%

Using the Scanning Fluid Dynamic Gauging Device to Understand the Cleaning of Baked Lard Soiling Layers

Ali

Alam

Ward

et al. 2015

J Surfact & Detergents

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Extended or repeated heating of food fats promotes polymerisation reactions that produce difficult-to-remove soil layers. Cleaning of these baked-on/burnt-on fat deposits was investigated using model layers generated by baking lard on 316 stainless steel discs. Rigorous characterisation of the layer material was difficult, as it was insoluble in most solvents. Cleaning was studied using the scanning fluid dynamic gauging technique developed by Gordon et al. (Meas Sci Technol 21:85–103, 2010), which provides non-contact in situ measurement of layer thickness at several sites on a sample in real time. Tests at 50 C with alkali (sodium hydroxide, pH 10.4–11) and three surfactant solutions indicated two removal mechanisms, related to the (1) roll-up and (2) dispersion mechanisms reported for oily oils, namely (1) penetration of solvent at the soil–liquid interface, resulting in detachment of the soil layer as a coherent film, observed with linear alkylbenzene sulfonic acid (LAS) and Triton X-100 and aqueous sodium hydroxide at pH 10.4–11; and (2) the breakdown promoted by the agent penetrating through the layer, observed with cetyl trimethyl ammonium bromide (CTAB), in which CTAB antagonised the cleaning action of LAS.

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“…11 Thereafter, the swelling rate decreased weakly over time. Gordon et al 24 and Wang and Wilson 9 reported similar behavior using other FDG techniques, but were not able to collect data so soon after immersion. These findings are consistent with earlier studies using gravimetric techniques (Schott 25,26 ).…”

Section: Swelling Of Soft Solid Layersmentioning

confidence: 98%

Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

Tsai¹,

Cuckston²,

Hallmark³

et al. 2019

AIChE Journal

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An innovative fluid-dynamic gauging (FDG) device to study the initial as well as longterm swelling or removal of soft solid layers immersed in a liquid environment in real time and in situ is presented. This sideways FDG (SiDG) device was developed for soft solid layers whose properties change significantly on contact with liquid. Calibration tests indicated a resolution of ±10 μm. The open source computational fluid dynamics (CFD) code OpenFOAM was used to model the flow in the SiDG nozzle. Good agreement was obtained between experimental and CFD results at different nozzle clearances, so that the shear stress exerted by the gauging flow can be computed accurately. A series of demonstration studies are presented, on layers of petroleum jelly, polyvinyl acetate, gelatin and a complex model soil. Initial swelling dynamics are captured and the influence of pH on initial swelling behavior, previously inaccessible, is reported.

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Elucidating enzyme-based cleaning of protein soils (gelatine and egg yolk) using a scanning fluid dynamic gauge

Cited by 17 publications

References 11 publications

Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

Using the Scanning Fluid Dynamic Gauging Device to Understand the Cleaning of Baked Lard Soiling Layers

Fluid‐dynamic gauging for studying the initial swelling of soft solid layers

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