Drying techniques were shown to have a
significant impact on FRAP values of powders (p 0.05). Soong and
Barlow (2004) reported mango cubes had antioxidant activity of
36.6 m mol/g db, ascorbic acid equivalent, using FRAP assay. Mango
pulp from green and ripe fruit showed FRAP value of 16.42 and
15.30 m mol TE/g db, respectively (Aziz et al. 2012). Our data on
antioxidant activity for mango powder were comparable to those
reported previously.
3.2.4. ORAC method
The antioxidant activity measured by ORAC for dried powders
from different drying methods was 408e651 m mol TE/g db
(Fig. 2d). Statistical analysis indicated significant change in ORAC
values of powders with different dryers used (p 0.05), however,
FD and IRD samples values did not vary significantly. Hung
(2012) reported that hydrophilic ORAC values varied from 32 to
62.1 m mol TE/g db whereas lipophilic ORAC values varied from
1.2 to 2.5 m mol TE/g db in dehydrated mango flesh using sun, air,
freeze, vacuum and microwave techniques. The ORAC value obtained
in present study are higher than reported values in