3.1. Soluble and insoluble dietary fibre content
In food processing, dietary fibre is used as fat replacer to increase viscosity of the product and reduce oil uptake during
frying (Dreher, 1995). The nutritional value of fruit DF additionally attributed due to the presence of significant amount
of bioactive compounds such as polyphenols, which are
linked covalently to different dietary fibre components.
The total dietary fibre content in mango peel acetone powder after the acetone extraction was found to be in the range
of 40.6–72.5% (Table 1). The soluble dietary fibre content in
acetone peel powder was in the range of 12.8–23.0% and insoluble dietary fibre content varied from 27.8% to 49.5% and the
IDF/SDF ratio varied from 2.0 to 2.2. The soluble dietary fibre
content was found to be 31–33% of TDF. It may be noted that
the content of both the dietary fibres increased during ripening. Content of dietary fibre is more in Badami variety in both
raw and ripe compared to Raspuri. Earlier Ajila et al. (2007a)
reported that total DF content in fresh peels was ranged from
45% to 78%. Compared to the dietary fibre content in fresh
mango peel, there was a marginal decrease in DF was observed in acetone powder. This decrease in TDF is mainly
due to the decrease in SDF content.