The colorimetric results (Table 5) indicated
that the L*
values increased proportionally with the
amount of maltodextrin added. This shows that the
spray-dried powders appeared very light and white in
colour as more maltodextrin were added (HunterLab,
2008). However, a*
values decreased slightly as
the concentration of maltodextrin increased. The
negative a*
values indicating that the spray-dried
powders were very light green in colour . The colour
changes of spray-dried guava and watermelon
powders due to addition of maltodextrin were also
noted by Chopda and Barrett (2001) and Quek et al.
(2007), respectively