3.3. Influence of raspberry marc extract on sensory properties of
purees
Functional foods are an exciting trend in the food and nutrition
field (Crowe & Francis, 2013). However, many plant-origin phenolics are characterised by bitterness and astringency, which are well
known for eliciting negative consumer reaction at high intensities
(Soares et al., 2013). Therefore, the competing demands of taste and
health may pose a dilemma for the food industry. The off-taste of
functional ingredients may be masked with a properly chosen
(balanced) food product flavour. Considering theses aspects sensory properties of fruit purees with raspberry marc extract were
evaluated.
The colour, odour and texture of all tested purees were equally
acceptable for the panellists (Table 3). When the additive concentration was between 0.2 and 1.2%, the colour of PACP became
somewhat “muddy/dirty”, which made those samples slightly less
acceptable compared to the control sample or purees with higher
additive percentages (Table 3). The reduction and then following
increase in colour acceptance values of PACP correlated with the
changes in colour purity values C* (Table 2). The colour of the redcoloured puree (ABCP) became slightly darker (lower L*) and
redder (higher a*) with increased percentages of extract (Table 2),
but this change did not influence the colour acceptance values
(Table 3).
Table 2
3.3. Influence of raspberry marc extract on sensory properties ofpureesFunctional foods are an exciting trend in the food and nutritionfield (Crowe & Francis, 2013). However, many plant-origin phenolics are characterised by bitterness and astringency, which are wellknown for eliciting negative consumer reaction at high intensities(Soares et al., 2013). Therefore, the competing demands of taste andhealth may pose a dilemma for the food industry. The off-taste offunctional ingredients may be masked with a properly chosen(balanced) food product flavour. Considering theses aspects sensory properties of fruit purees with raspberry marc extract wereevaluated.The colour, odour and texture of all tested purees were equallyacceptable for the panellists (Table 3). When the additive concentration was between 0.2 and 1.2%, the colour of PACP becamesomewhat “muddy/dirty”, which made those samples slightly lessacceptable compared to the control sample or purees with higheradditive percentages (Table 3). The reduction and then followingincrease in colour acceptance values of PACP correlated with thechanges in colour purity values C* (Table 2). The colour of the redcoloured puree (ABCP) became slightly darker (lower L*) andredder (higher a*) with increased percentages of extract (Table 2),but this change did not influence the colour acceptance values(Table 3).Table 2
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