This result was also happened in the powders produced by freeze drying. BRM with a higher DE value contains a higher ratio of short chain polysaccharides, which can rapidly absorb surrounding moisture due to the presence of more hydrophilic groups (Nayak & Rastogi, 2010). Cai and Croke (2000) reported that decreasing the molecular weight of maltodextrin resulted in an increase in the hygroscopic properties of the powders. A comparison between BRMs and CM10 found closely similar values of both parameters under all processing conditions of drying. The spray dried powders in this study had moisture contents of about 2.47–6.85%, slightly higher than in the report from Cai and Croke (2000) (1.98–6.80% moisture content). However, the aw of all the powders was less than 0.6, which does not support the growth of most microorganisms (Ray & Bhunia, 2013).