Functional properties of infant milk powder
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Authors: | Karolina Szulc1, Ewa Ostrowska-Ligęza2, Andrzej Lenart1 1Department of Food Engineering and Process Management, Faculty of Food Science, SGGW – Warsaw University of Life Sciences ul. Nowoursynowska 159C, 02-776 Warszawa 2Department of Chemistry, Warsaw University of Life Sciences, Faculty of Food Sciences, ul. Nowoursynowska 166, 02-776 Warszawa, Poland |
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Abstract : | The aim of the study was investigation of the influence of raw material composition and agglomeration on functional properties of infant milk powder. Technological methods included three processes: mixing, agglomeration and drying. 15% aqueous solution of lactose and 20% aqueous solution of maltodextrin were used as wetting liquids for the agglomeration. Analysis of functional properties included: particle size, bulk density, Hausner ratio, Carr index, flowability as the pouring time, angle of repose, wettability and solubility. Wet agglomeration of powdered mixtures caused an increase of particle size and it made possible to obtain agglomerates with good flowability and wettability, and reduced bulk density. Wet agglomeration with 15% aqueous solution of lactose, compared with the agglomeration by using 20% aqueous solution of maltodextrin as the wetting liquid, improved the wettability of the obtained agglomerates. The agglomeration of modified milk powder, without milk fat (whole milk powder), resulted in obtaining agglomerates with instant properties. |
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Keywords : | infant milk powder, flowability, agglomeration, essential polyunsaturated fatty acids | ||||||||
Language : | English |