4. Conclusion
Both the emulsifiers investigated have an effect on the melting
and crystallisation of the bulk fat. MDGs melt and crystallise
independently from the bulk fat, but have an effect on its
thermal behaviour, acting as templates for the crystallisation
of the bulk fat. Tween 80 acts as an impurity, leading to the
formation of less perfect crystals in the bulk fat. As this work
has relevance due to the use of both the bulk fat blend and the
emulsifiers in the production of ice cream, future work should
consider the effect of these emulsifiers on the thermal
behaviour of an emulsified system, to determine the effect
of additional ingredients (such as water and sugar) and
consider interfacial effects. Further investigations should take
into account their effect on the final ice cream product, in
terms of fat destabilisation, meltdown properties, texture and
sensory perception.