The moisture content in powder was between 1.30 ± 0.61 and 3.14 ± 1.05% (dry weight basis). It was preferable to be as low as possible as high moisture content would limit the shelf life of the powder (Moreira et al. 2009). In most cases, the higher inlet temperature promoted faster drying because of the greater difference between drying temperature and particles, which caused quicker moisture elimination (Goula and Adamopoulos 2010). The moisture contents of the powder produced in this study were below 10% and could be classified as microbiologically safe and can be stored for long term (Ng et al. 2012). The water activity (aw) of the produced powder was between 0.20 ±0.00 and 0.25 ±0.04 and was regarded as stable (