Modeling of salt diffusion in the egg curing process | |
| Author | Vu Truong Son |
| Call Number | AIT Thesis no. AE-97-19 |
| Subject(s) | Eggs as food Salting of food |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The diffusivity of sodium chloride in curing eggs was investigated in laboratory experiments. The eggs were immersed in brine at three levels of concentration (300 g/l, 250 g/1, and 200 g/l) and three levels of temperature (30°C, 40°C, and 50°C). The brine concentration and temperature were maintained at constant levels during the curing process for 30 days duration. Salt absorption was measured in the egg white and yolk at one day intervals. The average values of salt diffusivity were determined by the analytical solution of Fick' s second law of mass transport by diffusion. A comparison of estimated and experimental values of salt concentration ratios in eggs revealed that the assumption of constant diffusivity values was not valid. There fore, the instantaneous values of salt diffusivity determined from experiment data were related to the respective salt concentration ratios in eggs, and used in series solution of diffution equation. These modifications resulted in considerable improvement in the degree of estimation of salt concentration in eggs during the curing process. Also the series solution of diffusion equation was expressed in an alternate simpler form for the ease of computation. Finally, correlation equations were determined to characterize diffusivities as function of concentration and temperature. |
| Year | 1997 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Jindal, Vinod K. ; |
| Examination Committee(s) | Athapol Noomhorm ;Vincent, Jean-Claude; |
| Scholarship Donor(s) | Government of New Zealand ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1997 |