The surface composition of food powders created from spray drying solutions containing various ratios of sodium caseinate, maltodextrin and soya oil have been analysed by Electron Spectroscopy for Chemical Analysis. The results show significant enrichment of oil at the surface of particles compared to the bulk phase, and (when the non-oil components only are considered), a significant surface enrichment of sodium caseinate also. The study found evidence of high levels (80%) of surface fat even on particles of food industry grade (92.5%) sodium caseinate containing only 1% fat.
|Title of host publication||Drying 2010|
|Subtitle of host publication||proceedings of the international drying symposium|
|Editors||E. Tsotsas, T. Metzger, M. Peglow|
|Number of pages||9|
|Publication status||Published - 2010|
|Event||17th International Drying Symposium - Magdeburg, Germany|
Duration: 3 Oct 2010 → 6 Oct 2010
|Conference||17th International Drying Symposium|
|Period||3/10/10 → 6/10/10|
- sodium caseinate
- soya oil
- x-ray photoelectron spectroscopy
Jones, J., Prime, D. C., Leaper, M., Richardson, D. J., Rielly, C. D., & Stapley, A. G. F. (2010). Effect of processing variables and bulk composition on the surface composition of spray dried powders of a model food system. In E. Tsotsas, T. Metzger, & M. Peglow (Eds.), Drying 2010: proceedings of the international drying symposium (pp. 1178-1186). DECHEMA.