pumpkin flours (31e50 mL 100 g1) were significantly (p 0.05)
higher than those of the albumin solution on its own. The pumpkin
flours did not have a deteriorating effect on the emulsion stability
values of the albumin solution. ES values of freeze-dried pumpkin
flours were significantly (p 0.05) higher than those of hot-air
oven dried pumpkin flours. ES values of the samples without
metabisulfite application were significantly higher (p 0.05) than
those of the samples with metabisulfite application. The increase in
ES values (Table 2) is probably due to the presence of higher dietary
fiber levels in these samples (Table 1). These results were consistent
with the findings of Abdul Aziz et al. (2012) that the emulsifying
and stabilizing agents present in mango pulp and peel are carbohydrate
polymers (such as pectin), which might have increased the
viscosity of the aqueous phase and reduced the tendency of the
dispersed oil globules to migrate and coalesce.
The pumpkin flours improved the emulsifying properties of albümin.
These results highlight the possibility of using pumpkin
flour as a techno-functional additive in some processed foods such
as bakery products, beverages, ice cream and yoghurt.