Spray drying of low-phenylalanine skim milk: optimization of process conditions for improving solubility and particle sizeAmiri-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
It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1111/j.1365-2621.2011.02869.x Abstract/SummaryThe 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.
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