The sugar composition of soluble and insoluble dietary fibre isolated from Badami and Raspuri raw and ripe mango
peels was determined by GLC as alditol acetates. Arabinose,
galactose and glucose were the major neutral sugars in the
insoluble dietary fibre fractions as shown in Table 2. Soluble
dietary fibre also had arabinose, galactose and glucose as
the major sugars. Higher amounts of arabinose and galactose
could be due to neutral arabinogalactan type polysaccharides
or could also be pectic type, which are linked to galacturonic acid residues. Higher amount of glucose could be due to cellulosic cell wall polysaccharides and could also be due to associated b-glucan type polysaccharides. Small amounts of
galactomannan type or glucomannan type or mannan type
of polysaccharides may also form cell wall polysaccharides
in mango. Arabinoxylan and xylan type of polysaccharides
may be in minor amounts in mango peel