Spray drying of low-phenylalanine skim milk: optimization of process conditions for improving solubility and particle size

Amiri-Rigi, A. ORCID: https://orcid.org/0000-0002-6932-7939, Emam-Djomeh, Z., Mohammadifar, M. A. and Mohammadi, M. (2012) Spray drying of low-phenylalanine skim milk: optimization of process conditions for improving solubility and particle size. International Journal of Food Science and Technology, 47 (3). pp. 495-503. ISSN 1365-2621 doi: 10.1111/j.1365-2621.2011.02869.x

Abstract/Summary

The optimisation of the spray drying process for low-phenylalanine skim milk as a dietary supplement for phenylketonurics was studied. The effects of basic parameters including the inlet air temperature (100, 150 and 200 oC), feed flow rate (5, 10 and 15 mL/min) and air flow rate (400, 600 and 800 L/h) on the solubility and particle size of the low-phenylalanine skim milk powder were determined using response surface methodology. The optimum conditions have been obtained with inlet air temperature of 133 oC, feed flow rate of 5 mL min)1, and air flow rate of 800 L/h. With the optimum parameters, the predicted values for the solubility and mean diameter were 95.33% and 5.34 ml, respectively, and experimentally were 94.36 ± 1.62% and 5.50 ± 0.44 ml, respectively. The experimental and predictive values were closely related showing predictive accuracy of the models.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/113790
Identification Number/DOI	10.1111/j.1365-2621.2011.02869.x
Refereed	Yes
Divisions	No Reading authors. Back catalogue items Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
Publisher	Wiley-Blackwell
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