Mathematical modelling and simulation of Protein Denaturation during Heat Treatment of Dairy Fluids
Fouling has been a problem since the invention of heat exchanger. The presence of such deposits on heater surface can reduce the efficiency of the heater, which leads to plant shut down and subsequently loss of production. Fouling in the dairy industry is the most severe as daily cleaning of heat...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Research Report |
| Language: | English |
| Published: |
Universiti Malaysia Sabah
2010
|
| Online Access: | https://eprints.ums.edu.my/id/eprint/22845/1/Mathematical%20modelling%20and%20simulation%20of.pdf https://eprints.ums.edu.my/id/eprint/22845/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Fouling has been a problem since the invention of heat exchanger. The presence of such
deposits on heater surface can reduce the efficiency of the heater, which leads to plant shut
down and subsequently loss of production. Fouling in the dairy industry is the most severe
as daily cleaning of heat exchangers is often required, compared to other industries which
only need yearly cleaning. Dairy fouling is caused by the thermal denaturation of betalactoglobulin
at temperatures above 70oe. Therefore, this work was carried out to help the
understanding of how transport phenomena in a heater affects the protein denaturation
process. Modelling of the concentration of the native protein, denatured protein and
aggregated protein during heat treatment of dairy product was successfully performed using
finite element computational method. Based on the simulated concentration prOfiles, it is
clear that native protein is not the contributor to fouling. It was also found that aggregated
protein solely cannot be the main foulant. However, there is also possibility where
depoSition is caused by both denature and aggregated proteins, but it is more complicated
to predict the deposition pattern unless the ratio of the two depositing proteins involved is
known through experiment. Experiments were also carried out to validate the simulation
work, however, due to the raw materials used, results were found to be inconsistence. |
|---|