In terms of TDF, all of the jams generally have low TDF
content with grape jam having the lowest TDF content. On
the other hand, strawberry and blueberry jams have nearly
identical TDF content while the apricot jams contained the
highest TDF content. Department of Health UK (DH)
(2013) reported that grape, strawberry and blueberry have
low TDF content (1.3–3.8 g/100 g). This is consistent with
TDF content of other fruits such as orange, plum and guava
(0.3–5.2 g/100 g) as reported by Ramulu and Rao (2003).
Fruits contained low TDF content which explains the scarcity
of TDF in all of the jams.