Table 2 shows the effect of the spouted bed drying process overthe color of camu-camu powder. Overall, the spouted bed dried powders had lower values of lightness (L*), compared to the lyophilized powder. For samples with higher concentration of maltodextrin (6%), the differences in lightness are not so evident (p b 0.05). The camu-camu pulp contains soluble solids and sugars (Table 1), which can cause a stickiness problem during drying (Fang & Bhandari, 2012). The product particles clumping together adversely affect the free-flowing of the fruit material into the drier, which can lead to overheating and browning. Maltodextrin favors flowability and could justify the observed behavior. There were wide variation of C* and h* values independent of the increase in temperature or maltodextrin concentration. Similar observations were made by Tonon et al. (2008) for C* values when investigating açai juice powder produced by spray drying.