Dr Eli Gray-Stuart staff profile picture

Contact details +64 (06) 356 9099  ext. 83949

Dr Eli Gray-Stuart

Lecturer in Packaging Technology

School of Food and Advanced Technology

I am a research officer and Lecturer in Packaging Technology. My two primary research interests are in food packaging and food oral processing. Currently my work is focused on the development of mathematical models for heat and mass transfer in packaging systems.  This has included investigating ways to improve the thermal performance of corrugated fibreboard in the cold chain, and how models of transient moisture transfer in fibreboard could be used to inform package design. I also have a keen interest in how consumers interact with packaging; specifically how functional packaging design can influence and enhance the consumer experience.  On the food side, I have developed conceptual and mathematical models to describe food breakdown and bolus properties during chewing, and am interested in how modelling could be used as a tool to aid food design and increase our understanding of oral processing.

I am a research officer and Lecturer in Packaging Technology. My two primary research interests are in food packaging and food oral processing. My research is mostly applied with some theoretical elements, the application of mathematical modelling is a central theme in both my research areas.

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Research Expertise

Research Interests

Food packaging systems

Using mathematical modelling as a tool to inform food packaging design

Food oral processing

Modelling food breakdown and bolus formation in the mouth

Thematics

Future Food Systems

Area of Expertise

Field of research codes
Chemical Engineering (090400): Engineering (090000): Food Engineering (090802): Food Processing (090805): Food Sciences (090800)

Keywords

Packaging

Modified atmosphere packaging

Package optimisation

Food oral processing

Mastication modelling

Process Engineering

Research Projects

Summary of Research Projects

Position Current Completed
Project Leader 0 2

Research Outputs

Journal

Jamsari, MA., Kueh, C., Gray-Stuart, E., Martinez Hermosilla, G., Dahm, K., & Bronlund, J. (2019). A technique to quantify morphological damage of the flute profile in the midplane of corrugated fibreboard. Packaging Technology and Science. 32(5), 213-226 Retrieved from https://onlinelibrary.wiley.com/doi/full/10.1002/pts.2431
[Journal article]Authored by: Bronlund, J., Gray-Stuart, E., Kueh, C., Martinez Hermosilla, G.
Gray-Stuart, EM., Bronlund, JE., Navaranjan, N., & Redding, GP. (2019). Measurement of thermal conductivity of paper and corrugated fibreboard with prediction of thermal performance for design applications. Cellulose. 26(9), 5695-5705
[Journal article]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., Jones, JR., & Bronlund, JE. (2017). Defining the end-point of mastication: A conceptual model. Journal of Texture Studies. 48(5), 345-356
[Journal article]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Ng, GCF., Gray-Stuart, EM., Morgenstern, MP., Jones, JR., Grigg, NP., & Bronlund, JE. (2017). The slip extrusion test: A novel method to characterise bolus properties. Journal of Texture Studies. 48(4), 294-301
[Journal article]Authored by: Bronlund, J., Gray-Stuart, E., Grigg, N., Jones, J.

Thesis

Gray-Stuart, EM. (2016). Modelling food breakdown and bolus formation during mastication. (Doctoral Thesis, Massey University)
[Doctoral Thesis]Authored by: Gray-Stuart, E.Edited by: Bronlund, J., Jones, J.

Report

Gray-Stuart, EM., Navaranjan, N., & Bronlund, JE.(2015). Anisotropic thermal conductivity measurement of a range of liner and medium paper samples..
[Technical Report]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., & Bronlund, JE.(2015). Thermal bridge to improve cooling performance of pallets.
[Technical Report]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., Bronlund, JE., Navaranjan, N., & Robertson, TR.(2014). Modelling Heat Transfer through Corrugated Cardboard Packaging.
[Technical Report]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., & Bronlund, JE.(2014). Evaluating the thermal performance of corrugated board in a blast chiller..
[Technical Report]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., Navaranjan, N., Bronlund, JE., & Parr, R.(2014). Flash freeze cardboard box for frozen products export.
[Technical Report]Authored by: Bronlund, J., Gray-Stuart, E.

Conference

Jamsari, MA., Kueh, C., Gray-Stuart, E., Martinez-Hermosilla, GA., Dahm, K., & Bronlund, JE.A technique to quantify morphological damage of the flute profile in the midplane of corrugated fibreboard. Packaging Technology and Science. 32 (5)(pp. 213 - 226). 0894-3214.
[Conference]Authored by: Bronlund, J., Gray-Stuart, E., Kueh, C., Martinez Hermosilla, G.
How, M., Gray-Stuart, E., Morgenstern, M., Jones, J., & Bronlund, J. (2018, October). Predicting the Particle Size Distribution of Starch Food Bolus During Mastication. Presented at Biomouth meeting. University of Cantubury.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
How, M., Gray-Stuart, E., Morgenstern, M., Jones, JR., & Bronlund, J. (2018, July). A Mathematical Model of the Bolus Formation of Starch-Based Foods During Oral Processing. Presented at 5th International Conference on Food Oral Processing. Nottingham, England.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Onguta, E., Bronlund, J., Gray-Stuart, E., Hort, J., Kaur, L., & Morgenstern, M. (2018, July). Impact of beef protein structure on digestibility and sensory experience. Presented at Annual Riddet Institute Conference. Wellington, New Zealand.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Kaur, L.
Mohan, R., Gray-Stuart, EM., Prichard, GC., & Mclaren, SJ. (2018). USE OF LIFE CYCLE ASSESSMENT (LCA) TO FACILITATE CONTINUOUS IMPROVEMENT OF ON-FARM ENVIRONMENTAL PERFORMANCE: A SHEEP DAIRY CASE STUDY. http://www.massey.ac.nz/~flrc/workshops/18/paperlist18.htm. : Fertiliser Lime & Research Centre Annual Workshop
[Conference Paper in Published Proceedings]Authored by: Gray-Stuart, E., McLaren, S., Prichard, G.
Gray-Stuart, EM. (2017, August). Challenges in modern food packaging - ensuring accessibility for consumers. Presented at Dietitians NZ 2017 Annual National Professional Development Meeting. Wellington, New Zealand.
[Conference Oral Presentation]Authored by: Gray-Stuart, E.
Gray-Stuart, EM., Jones, JR., & Bronlund, JE. (2017, February). Defining the End-point of Mastication: a Conceptual Model. A discussion on the criteria for decision-making. Do we continue chewing the food, or do we prepare it for swallowing?. Presented at US: NZ Science Workshop – Oral Processing for Indulgence and Health
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Bronlund, JE., Jones, JR., & Morgenstern, M. (2017, February). A framework for modelling solid food breakdown during mastication. Presented at US-NZ Science Workshop - Oral Processing for Indulgence and Health. Wellington, New Zealand.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., & Bronlund, JE. (2017, May). Investigation into the use of a thermal bridge to improve the cooling performance of palletised food products. Presented at 28th IAPRI World Symposium on Packaging. Lausanne, Switzerland.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
Ng, GCF., Gray-Stuart, EM., Morgenstern, M., & Bronlund, JE. (2016, July). Evaluating the slip extrusion test using three model food systems. Presented at 4th International Conference on Food Oral Processing. Lausanne, Switzerland.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
Ng, GCF., Gray-Stuart, EM., Morgenstern, MP., Bronlund, JE., & Jones, JE. (2016, March). Application of a novel texture measurement device in the Swallow Safe model. Presented at Biomouth Symposium. Lincoln.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Bronlund, JE., Martinez-Hermosilla, GA., Brown, C., & Olatunji, J. (2016, October). Mathematical modelling as a tool to inform packaging design. Presented at Foodtech Packtech. Auckland, New Zealand.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., & Robertson, TR. (2016, July). I cant open my baked beans anymore. Presented at New Zealand Institute of Food Science and Technology Annual Conference 2016. Rotorua, New Zealand.
[Conference Oral Presentation]Authored by: Gray-Stuart, E.
Gray-Stuart, EM., Bronlund, JE., Jones, JR., & Morgenstern, M. (2015, October). Modelling solid food breakdown during mastication. Presented at US: NZ Science Workshop – Oral Processing and the Design of Foods for Consumers. North Carolina, United States of America.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Bronlund, JE., Gray-Stuart, EM., Ng, GCF., & Morgenstern, M. (2015, October). In-vitro characterisation of foo breakdown - from ingestion to swallow. Presented at US:NZ Science Workshop - Oral Processing and the Digestion of Foods for Consumers. North Carolina.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
Bronlund, JE., Gray-Stuart, EM., Ng, GCF., & JOnes, JR. (2015, October). Modelling as a tool to characterise food structure breakdown during oral processing. Presented at Food Structures, Digestion and Health. Wellington.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Davies, CE., Brown, C., Brown, N., & Grinding, C. (2015). Grinding characteristics and energy consumption of two bench top grinders. In Asia Pacific Confederation of Chemical Engineering Congress 2015 (APCChE 2015) Incorporating CHEMECA 2015(pp. 685 - 690). , APCChE Congress: Engineers Australia
[Conference Abstract]Authored by: Brown, N., Davies, C., Gray-Stuart, E.
Navaranjan, N., Fletcher, GC., Gray-Stuart, EM., & Bronlund, JE. (2014, October). Heat transfer property of cardboard structures. Presented at Appita Fibre Value Chain Conference & Expo. Rotorua.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
NG, GCF., Gray-Stuart, EM., Morgernstern, M., & Bronlund, JE. (2014). Evaluating Particle Breakage in a Chewing Robot. Poster session presented at the meeting of Food Oral Processeing
[Conference Poster]Authored by: Bronlund, J., Gray-Stuart, E.Contributed to by: Gray-Stuart, E.
Gray-Stuart, EM., Jones, JR., Bronlund, JE., & Morgernstern, M. (2014, April). Modelling of Food Break Down During Mastication. Presented at Conference of Food Engineering. Omaha, Nebraska. USA.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Bronlund, JE., Robertson, TR., & Navaranjan, N. (2014, April). Modelling of heat transfer through corrugated cardboard packaging. Presented at Conference of Food Engineering. Omaha, United States of America.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E.
Gray-Stuart, EM., Jones, JR., Bronlund, JE., & Morgenstern, M. (2014, June). Modelling the Food During Mastication. Presented at Food Oral Processing. Wageningen.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Bronlund, JE., Gray-Stuart, EM., Jones, JR., & Morgernstern, MP. (2012, April). The Dynamics of Oral Processing - The First Stage of Gastric Digestion. Presented at Conference of Food Engineering. Leesburgh Virginia, USA.
[Conference Oral Presentation]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Jones, JR., Bronlund, JE., & Morgernstern, MP. (2012). Control loops in mastication: Whether to keep chewing or prepare for swallowing. Chemeca 2012: Quality of life through chemical engineering. Vol. 40 (pp. 474 - 488). Barton, Australia: Chemeca 2012
[Conference Paper in Published Proceedings]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.
Gray-Stuart, EM., Jones, JR., Bronlund, JE., & Morgernstern, MP. (2012). Rate processes during mastication important for modelling bolus formation. Chemeca 2012: Quality of life through chemical engineering. (pp. 489 - 498). Barton, Australia: Chemeca
[Conference Paper in Published Proceedings]Authored by: Bronlund, J., Gray-Stuart, E., Jones, J.

Supervision and Teaching

Summary of Doctoral Supervision

Position Current Completed
Co-supervisor 3 0

Courses Coordinated

Current Doctoral Supervision

Co-supervisor of:

  • Esther Onguta - Doctor of Philosophy
    Linking protein matrix structure to digestibility and consumer acceptability through oral processing
  • Aiman Jamsari - Doctor of Philosophy
    Characterisation of Damage in Corrugated Fibreboard Packaging (CFP)
  • How Mohd Firdaus How - Doctor of Philosophy
    Modelling bolus preparation during oral processing

Media and Links

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