Development and evaluation of freeze-dried milk powder with low-lactose content

Morioka, L.R.I. and Koga, E.C. and Suguimoto, H.H. (2018) Development and evaluation of freeze-dried milk powder with low-lactose content. Acta Alimentaria, 47 (3). pp. 283-290. ISSN 0139-3006

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Abstract

This work aims to develop a freeze-dried milk powder with low lactose content and evaluate the percentage composition, microbiological analysis, and the soy lecithin and temperature effect on the solubility, dispersibility, and wettability of the final product. According to the results, treatments with and without hydrolysis showed significant differences in moisture (3.96% and 2.63%), ash (8.92% and 10.0%), lactose (1.57% and 61.46%), and glucose (33.79% and 0.81%) contents. In both treatments, no microbiological contaminant was observed. For high values of solubility, the most appropriate combination was lecithin 0.6% at 80 ºC, for dispersibility was lecithin 0.6% at 94 ºC, and for wettability was lecithin 0.65% at 90 ºC. Based on the results, freeze-dried milk powder with low lactose content can represent a new technologically and nutritionally viable product. This can be an alternative production process representing potential for marketing as a final product or used as base for the food preparation containing milk with low lactose content.

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