Effect of processing variables and bulk composition on the surface composition of spray dried powders of a model food system

Jones, James R.; Prime, Dominic C.; Leaper, Mark C.; Richardson, David J.; Rielly, Chris; Stapley, Andy

IDS2010 Jones et al.pdf (1.42 MB)

Effect of processing variables and bulk composition on the surface composition of spray dried powders of a model food system

conference contribution

posted on 03.03.2011, 11:03 by James R. Jones, Dominic C. Prime, Mark C. Leaper, David J. Richardson, Chris RiellyChris Rielly, Andy StapleyAndy Stapley

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.

History

School

Aeronautical, Automotive, Chemical and Materials Engineering

Department

Chemical Engineering

Citation

JONES, J.R. ... et al, 2010. Effect of processing variables and bulk composition on the surface composition of spray dried powders of a model food system. IN: Tsotsas, E., Metzger, T. and Peglow, M. (eds.). Drying 2010 - Proceedings of the International Drying Symposium IDS 2010, Vol B. 17th International Drying Symposium, Magdeburg, Germany, 3rd-6th October, pp. 1178-1186.