School of Food Science and Nutrition

Search site

Rammile Ettelaie

Associate Professor in Food Chemical Physics
Research section: Food Colloids and Processing

Contact details

Room: 1.11
Tel: +44 (0)113 3432981
Email: R.Ettelaie@food.leeds.ac.uk

Keywords

Emulsions and foams
Competitive adsorption
Interfacial films
Colloidal Interactions
Self Consistent Field calculations
Brownian Dynamics

Photograph of Rammile Ettelaie

Research interests

Rammile Ettelaie is currently a Senior Lecturer in Food Chemical Physics, having joined the Department in March 2001 as a Lecturer. Previous to his appointment, he was a senior research scientist with ICI plc for 11 years, having worked in the Corporate Colloid Science group (Runcorn, UK) and then The Colloid and Rheology Unit (Wilton, UK). Rammile's current interests span the simulation and modelling of a range of food related interfacial phenomena, including:

  • Adsorption and formation of mixed food protein + polysaccharide films at air-water or oil-water interfaces.
  • Competitive adsorption amongst different protein species and between protein and surfactant molecules.
  • Investigation of interactions mediated by adsorbed interfacial layers to understand and assess the colloidal stability of food colloids under a range of environmental conditions.
  • Disproportionation and Ostwald ripening processes in bubble and emulsion dispersions
  • Behaviour of particle stabilised bubbles
  • Study of transport properties of highly heterogeneous food systems

Various simulation techniques, including Monte Carlo and Brownian Dynamics, as well as numerical calculations based on Self Consistent Field theory are used throughout the above studies. The department is a partner in White Rose High Performance Computer initiative, allowing access to the state of art computing facilities at Universities of Leeds, Sheffield and York.

Publications

Lishchuk SV, Ettelaie R, Annable T On the structural polydispersity of random copolymers adsorbed at interfaces: comparison of surface and bulk distributions Molecular Physics 115 1343-1351, 2017
DOI:10.1080/00268976.2017.1292369
View abstract

Aktar T, Chen J, Ettelaie R, Holmes M, Henson B Human roughness perception and possible factors effecting roughness sensation Journal of Texture Studies 48 181-192, 2017
DOI:10.1111/jtxs.12245
View abstract

Ding R, Valicka E, Akhtar M, Ettelaie R Insignificant impact of the presence of lactose impurity on formation and colloid stabilising properties of whey protein–maltodextrin conjugates prepared via Maillard reactions Food Structure 12 43-53, 2017
DOI:10.1016/j.foostr.2017.02.004
View abstract

Ettelaie R, Zengin A, Lishchuk SV Novel food grade dispersants: Review of recent progress Current Opinion in Colloid and Interface Science 28 46-55, 2017
DOI:10.1016/j.cocis.2017.03.004
View abstract

Shahbazi M, Rajabzadeh G, Rafe A, Ettelaie R, Ahmadi SJ Physico-mechanical and structural characteristics of blend film of poly (vinyl alcohol) with biodegradable polymers as affected by disorder-to-order conformational transition Food Hydrocolloids -, 2017
DOI:10.1016/j.foodhyd.2017.04.017
View abstract

Lishchuk SV, Ettelaie R Detachment Force of Particles with Pinning of Contact Line from Fluid Bubbles/Droplets Langmuir 32 13040-13045, 2016
DOI:10.1021/acs.langmuir.6b03546
View abstract

Shahbazi M, Ettelaie R, Rajabzadeh G Physico-mechanical analysis data in support of compatibility of chitosan/κ-carrageenan polyelectrolyte films achieved by ascorbic acid, and the thermal degradation theory of κ-carrageenan influencing the properties of its blends. Data Brief 9 648-660, 2016
DOI:10.1016/j.dib.2016.09.039
View abstract

Shahbazi M, Rajabzadeh G, Rafe A, Ettelaie R, Ahmadi SJ The physico-mechanical and structural characteristics of blend film of poly (vinyl alcohol) with biodegradable polymers as affected by disorder-to-order conformational transition Food Hydrocolloids 60 393-404, 2016
DOI:10.1016/j.foodhyd.2016.03.038
View abstract

Laguna L, Aktar T, Ettelaie R, Holmes M, Chen J A Comparison Between Young and Elderly Adults Investigating the Manual and Oral Capabilities During the Eating Process Journal of Texture Studies 47 361-372, 2016
DOI:10.1111/jtxs.12205
View abstract

Ettelaie R, Holmes M, Chen J, Farshchi A Steric stabilising properties of hydrophobically modified starch: Amylose vs. amylopectin Food Hydrocolloids 58 364-377, 2016
DOI:10.1016/j.foodhyd.2016.03.004
View abstract

Shahbazi M, Rajabzadeh G, Ettelaie R, Rafe A Kinetic study ofκ-carrageenan degradation and its impact on mechanical and structural properties of chitosan/κ-carrageenan film Carbohydrate Polymers 142 167-176, 2016
DOI:10.1016/j.carbpol.2016.01.037
View abstract

Sarkar A, Murray B, Holmes M, Ettelaie R, Abdalla A, Yang X In vitro digestion of Pickering emulsions stabilized by soft whey protein microgel particles: Influence of thermal treatment Soft Matter 12 3558-3569, 2016
DOI:10.1039/c5sm02998h
View abstract

Aktar T, Chen J, Ettelaie R, Holmes M Tactile Sensitivity and Capability of Soft-Solid Texture Discrimination Journal of Texture Studies 46 429-439, 2015
DOI:10.1111/jtxs.12142
View abstract

Ettelaie R, Lishchuk SV Detachment force of particles from fluid droplets Soft Matter 11 4251-4265, 2015
DOI:10.1039/c5sm00540j
View abstract

Ettelaie R, Murray BS Evolution of bubble size distribution in particle stabilised bubble dispersions: Competition between particle adsorption and dissolution kinetics Colloids and Surfaces A: Physicochemical and Engineering Aspects 475 27-36, 2015
DOI:10.1016/j.colsurfa.2014.10.005
View abstract

Aktar T, Chen J, Ettelaie R, Holmes M Evaluation of the sensory correlation between touch sensitivity and the capacity to discriminate viscosity Journal of Sensory Studies 30 98-107, 2015
DOI:10.1111/joss.12141
View abstract

Ettelaie R, Akinshina A Colloidal interactions induced by overlap of mixed protein + polysaccharide interfacial layers. Food Hydrocolloids 42 106-117, 2014
DOI:10.1016/j.foodhyd.2014.01.020
View abstract

Ettelaie R, Dickinson E, Pugnaloni L First-order phase transition during displacement of amphiphilic biomacromolecules from interfaces by surfactant molecules Journal of Physics: Condensed Matter 26 -, 2014
DOI:10.1088/0953-8984/26/46/464109
View abstract

Ettelaie R, Zengin A, Lee H Fragmented proteins as food emulsion stabilizers: A theoretical study. Biopolymers 101 945-958, 2014
DOI:10.1002/bip.22487
View abstract

Ettelaie R, Murray B Effect of particle adsorption rates on the disproportionation process in pickering stabilised bubbles Journal of Chemical Physics 140 204713-1-204713-13, 2014
DOI:10.1063/1.4878501
View abstract

Ettelaie C, Collier ME, Maraveyas A, Ettelaie R Characterization of physical properties of tissue factor-containing microvesicles and a comparison of ultracentrifuge-based recovery procedures. Journal of extracellular vesicles 3 23592-, 2014
DOI:10.3402/jev.v3.23592
View abstract

Ettelaie R, Khandelwal N, Wilkinson R Interactions between casein layers adsorbed on hydrophobic surfaces from self consistent field theory: kappa-casein versus para-kappa-casein. Food Hydrocolloids 34 236-246, 2014
DOI:10.1016/j.foodhyd.2012.09.006
View abstract

Farshchi A, Ettelaie R, Holmes MJ Influence of pH value and locust bean gum concentration on the stability of sodium caseinate-stabilized emulsions Food Hydrocolloids 32 402-411, 2013
DOI:10.1016/j.foodhyd.2013.01.010
View abstract

Ettelaie R, Tasker A, Chen J, Alevisopoulos S Kinetics of food biopolymer film dehydration: Experimental studies and mathematical modeling Industrial and Engineering Chemistry Research 52 7391-7402, 2013
DOI:10.1021/ie3033075
View abstract

Ettelaie R, Akinshina A, Maurer S Mixed protein-polysaccharide interfacial layers: Effect of polysaccharide charge distribution. Soft Matter 8 7582-7597, 2012
DOI:10.1039/c2sm25803j
View abstract

Chan PSK, Chen JS, Ettelaie R, Alevisopoulos S, Day E, Smith S Filament stretchability of biopolymer fluids and controlling factors FOOD HYDROCOLLOIDS 23 1602-1609, 2009
DOI:10.1016/j.foodhyd.2008.11.010

Chen JS, Ettelaie R, Yang HY, Yao L A novel technique for in situ measurements of stress development within a drying film J FOOD ENG 92 383-388, 2009
DOI:10.1016/j.jfoodeng.2008.12.009

Ettelaie R, Dickinson E, Akinshina A A Theoretical Self-Consistent Field Study of Mixed Interfacial Biopolymer Films ACS Synposium Series 1007 46-66, 2009
DOI:10.1021/bk-2009-1007.ch003
View abstract

Akinshina A, Ettelaie R, Dickinson E, Smyth G Interactions between adsorbed layers of alphaS1-casein with covalently bound side chains: a self-consistent field study. Biomacromolecules 9 3188-3200, 2008
DOI:10.1021/bm800771t
View abstract

Alexander C, Bermudez H, Emanuele, Tirelli N, Pochan, Cameron N, Donald A, McLeish T, Eichhorn, Waigh T, Weir M, Richter R, Mahadevan, Verdugo P, Khatri B, Corrigan A, Yakubov, Donald, Ettelaie R, Hashim R, Kressler J, Dalmaroni J, Joanny, Sear R, Fratzl P, Toncrova, Cifra P, Battaglia G Untitled - Discussion FARADAY DISCUSS 139 399-417, 2008

Ettelaie R, Akinshina A, Dickinson E Mixed protein-polysaccharide interfacial layers: a self consistent field calculation study. Faraday Discuss 139 161-178, 2008
DOI:10.1039/B717199D
View abstract

Chan PSK, Chen JS, Ettelaie R, Law Z, Alevisopoulos S, Day E, Smith S Study of the shear and extensional rheology of casein, waxy maize starch and their mixtures FOOD HYDROCOLLOID 21 716-725, 2007
View abstract

Ettelaie R, Dickinson E, Akinshina A AGFD 47-Design of multilayered biopolymer interfacial films for enhanced emulsion stability and for controlled release: A theoretical study ABSTR PAP AM CHEM S 233 , 2007

Kostakis T, Ettelaie R, Murray BS Enhancement of stability of bubbles to disproportionation using hydrophilic silica particles mixed with surfactants or proteins ROY SOC CH 302 357-368, 2007

Ettelaie R, Dickinson E, Cao L, Pugnaloni LA Theoretical study of phase transition behaviour in mixed biopolymer plus surfactant interfacial layers using the self-consistent-field approach, 2007

Buscall R, Ettelaie R Colloidal dispersions in polymer melts IND ENG CHEM RES 45 6915-6922, 2006
DOI:10.1021/ie0512643
View abstract

Kostakis T, Ettelaie R, Murray BS Effect of high salt concentrations on the stabilization of bubbles by silica particles LANGMUIR 22 1273-1280, 2006
DOI:10.1021/la052193f

Courtois P, Ettelaie R, Chen J Numerical Studies of Transport Properties in Heterogeneous Food Systems Applied Rheology 16 275-286, 2006
DOI:10.3933/ApplRheol-16-275

Pugnaloni LA, Ettelaie R, Dickinson E Rheology and microstructure of interfaces stabilized by mixed proteins and surfactants: A computer simulation study, 2006

Parkinson EL, Ettelaie R, Dickinson E Using self-consistent-field theory to understand enhanced steric stabilization by casein-like copolymers at low surface coverage in mixed protein layers. Biomacromolecules 6 3018-3029, 2005
DOI:10.1021/bm050329i
View abstract

Pugnaloni LA, Ettelaie R, Dickinson E Brownian dynamics simulation of adsorbed layers of interacting particles subjected to large extensional deformation. J Colloid Interface Sci 287 401-414, 2005
DOI:10.1016/j.jcis.2005.02.024
View abstract

Ettelaie R, Dickinson E, Murray BS Self-consistent-field studies of mediated steric interactions in mixed protein + polysaccharide solutions In Food Colloids: Interactions, Microstructure and Processing , 2005

Pugnaloni LA, Ettelaie R, Dickinson E Computer simulation of interfacial structure and large-deformation rheology during competitive adsorption of proteins and surfactants, 2005

Murray BS, Dickinson E, Du Z, Ettelaie R, Kostakis T, Vallet J Disproportionation kinetics of air bubbles stabilized by food proteins and nanoparticles In Food Colloids: Interactions, Microstructure and Processing , 2005

Kostakis T, Dickinson E, Ettelaie R, Murray BS Stabilization of foams by partially hydrophobic silica nanoparticles Proceedings of 7th World Congress of Chemical Engineering, Glasgow 10 - 14th July 2005, , 2005

Dickinson E, Ettelaie R, Kostakis T, Murray BS Factors controlling the formation and stability of air bubbles stabilized by partially hydrophobic silica nanoparticles LANGMUIR 20 8517-8525, 2004
DOI:10.1021/la048913k

Pugnaloni LA, Ettelaie R, Dickinson E Surface phase separation in complex mixed adsorbing systems: An interface-bulk coupling effect J CHEM PHYS 121 3775-3783, 2004
DOI:10.1063/1.1772753

Pugnaloni LA, Dickinson E, Ettelaie R, Mackie AR, Wilde PJ Competitive adsorption of proteins and low-molecular-weight surfactants: computer simulation and microscopic imaging ADV COLLOID INTERFAC 107 27-49, 2004
DOI:10.1016/j.cis.2003.08.003

Pugnaloni LA, Ettelaie R, Dickinson E Computer simulation of the microstructure of a nanoparticle monolayer formed under the interfacial compression Langmuir 20 6096-6099, 2004
DOI:10.1021/la049213i

Murray BS, Ettelaie R Foam stability: proteins and nanoparticles Current Opinion in Colloid and Interface Science 9 314-320, 2004
DOI:10.1016/j.cocis.2004.09.004

Ettelaie R Computer simulation and modelling of food colloids Current Opinion in Colloid and Interface Science 8 415-421, 2003
DOI:10.1016/S1359-0294(03)00096-7
View abstract

Ettelaie R, Murray BS, James EL Steric interactions mediated by multiblock polymers and biopolymers: role of block size and addition of hydrophilic side chains COLLOIDS AND SURFACES B-BIOINTERFACES 31 195-206, 2003
DOI:10.1016/S0927-7765(03)00140-1

Pugnaloni LA, Ettelaie R, Dickinson E Growth and aggregation of surfactant islands during the displacement of an adsorbed protein monolayer: a Brownian dynamics simulation study COLLOID SURFACE B 31 149-157, 2003
View abstract

Ettelaie R, Dickinson E, Du ZP, Murray BS Disproportionation of clustered protein-stabilized bubbles at planar air-water interfaces J COLLOID INTERF SCI 263 47-58, 2003
DOI:10.1016/S0021-9797(03)00214-5

Pugnaloni LA, Ettelaie R, Dickinson E Do mixtures of proteins phase separate at interfaces? Langmuir 19 1923-1926, 2003
DOI:10.1021/la026874b

Du Z, Murray BS, Ettelaie R, Dickinson E, Bos M, van Vliet T Disproportionation in systems of protein-stabilized gas bubbles In Proceedings of 3rd International Symposium on Food Rheology and Structure , 2003

Du Z, Bilbao-Montoya MP, Binks BP, Dickinson E, Ettelaie R, Murray BS Outstanding stability of particle-stabilized bubbles Langmuir 19 3106-3108, 2003
DOI:10.1021/la034042n

Murray BS, Dickinson E, Du ZP, Ettelaie R, Maisonneuve K, Soderberg I Measurement of bubble instability under conditions of rapid pressure change ROY SOC CH 165-175, 2003

Dickinson E, Ettelaie R, Murray BS, Du Z Kinetics of Disproportionation of Air Bubbles beneath a Planar Air–Water Interface Stabilized by Food Proteins Journal of Colloid and Interface Science 252 202-213, 2002
DOI:10.1006/jcis.2002.8405

Care CM, Ettelaie R Improved Rosenbluth Monte Carlo scheme for cluster counting and lattice animal enumeration PHYSICAL REVIEW E 62 1397-1404, 2000
DOI:10.1103/PhysRevE.62.1397
View abstract

Ettelaie R, Buscall R, Frith WJ, Sutton D Extent of reaction in energetic particulate mixtures: Role of composition and particle size ratio JOURNAL OF CHEMICAL PHYSICS 110 8730-8741, 1999
DOI:10.1063/1.478780
View abstract

Buscall R, Ettelaie R, Healy TW Yield stress and contact forces in coagulated oxide dispersions - Role of electrostatic interactions JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS 93 4009-4015, 1997
DOI:10.1039/a704669c
View abstract

Annable T, Buscall R, Ettelaie R Network formation and its consequences for the physical behaviour of associating polymers in solution COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 112 97-116, 1996
DOI:10.1016/0927-7757(96)03621-7
View abstract

Annable T, Ettelaie R Effects of the association on the phase behaviour of mixed solutions of hydrophobically modified and similar unmodified polymers JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE 93 899-919, 1996
View abstract

ETTELAIE R, BUSCALL R ELECTRICAL DOUBLE-LAYER INTERACTIONS FOR SPHERICAL CHARGE REGULATING COLLOIDAL PARTICLES ADVANCES IN COLLOID AND INTERFACE SCIENCE 61 131-160, 1995
DOI:10.1016/0001-8686(95)00263-P
View abstract

Ettelaie R Solutions of the linearized Poisson–Boltzmann equation through the use of random walk simulation method JOURNAL OF CHEMICAL PHYSICS 103 3657-3667, 1995
DOI:10.1063/1.470042
View abstract

ANNABLE T, ETTELAIE R THERMODYNAMICS OF PHASE-SEPARATION IN MIXTURES OF ASSOCIATING POLYMERS AND HOMOPOLYMERS IN SOLUTION MACROMOLECULES 27 5616-5622, 1994
DOI:10.1021/ma00098a015
View abstract

ANNABLE T, BUSCALL R, ETTELAIE R, SHEPHERD P, WHITTLESTONE D INFLUENCE OF SURFACTANTS ON THE RHEOLOGY OF ASSOCIATING POLYMERS IN SOLUTION LANGMUIR 10 1060-1070, 1994
DOI:10.1021/la00016a018
View abstract

ETTELAIE R ON THE HELMHOLTZ FREE-ENERGY OF THE HIGHLY-CHARGED DOUBLE PLATES IN AN ELECTROLYTE LANGMUIR 9 1888-1892, 1993
DOI:10.1021/la00031a042
View abstract

ANNABLE T, BUSCALL R, ETTELAIE R, WHITTLESTONE D THE RHEOLOGY OF SOLUTIONS OF ASSOCIATING POLYMERS - COMPARISON OF EXPERIMENTAL BEHAVIOR WITH TRANSIENT NETWORK THEORY JOURNAL OF RHEOLOGY 37 695-726, 1993
DOI:10.1122/1.550391
View abstract

ETTELAIE R, MOORE M ZERO-TEMPERATURE SCALING AND SIMULATED ANNEALING JOURNAL DE PHYSIQUE 48 1255-1263, 1987
DOI:10.1051/jphys:019870048080125500

ETTELAIE R, MOORE M RESIDUAL ENTROPY AND SIMULATED ANNEALING JOURNAL DE PHYSIQUE LETTRES 46 L893-L900, 1985

ETTELAIE R, MOORE M COMPARISON OF LANGEVIN AND MONTE-CARLO DYNAMICS JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 17 3505-3520, 1984
DOI:10.1088/0305-4470/17/18/020