The first two dimensions of CVA account for 90.3% of the variation in
the data set. The first axis, which appears as the whole dimension of the
sensory description, shows a clear difference between various cornflakes
(Fig. 5A). Correlations of sensory attributes with the first CVA dimension
show that samples A, D, F, H, I, K and M appear as brittle, crackly, airy and
light (Fig. 5B). On the opposite, samples E and J differ from the other samples
and that they are as cohesive and sticky, whereas samples B and C present
intermediate sensory profiles. This first sensory dimension can lightly be
interpreted as a gradient of crispness, and the first group as the group of crispy
samples, close to which samples G and L can be located on this axis. The first
sensory dimension also contains acoustic perception of the flakes. The pitch
of the sound produced by the products during the first bites is significantly
correlated to the perceived crispness. A sharp sound produced during the
beginning of mastication appears as an important feature of a crispy cornflake.
The second canonical variable splits samples G and L from the others, whilst
accounting for 6.82% of the variation. These products are characterized by a
louder and longer sound emitted during the mastication of the products, only
when tested dry, since the attributes “loudness” and “duration” of sound do
not significantly discriminate the samples when evaluated on cereals mixed
with milk. For all other sensory attributes, there was no significant difference
along the first sensory dimension between scores for dry flakes and mixed
with milk. These results are in line with those of Gregson and Lee (2003),
who suggested that cornflakes keep a crispy texture after 3 min in milk. In
our case, the time before draining, i.e., 8 s, did not lead to texture modification,
which justifies carrying out the study of mechanical and acoustic properties
on dry products.
The first two dimensions of CVA account for 90.3% of the variation inthe data set. The first axis, which appears as the whole dimension of thesensory description, shows a clear difference between various cornflakes(Fig. 5A). Correlations of sensory attributes with the first CVA dimensionshow that samples A, D, F, H, I, K and M appear as brittle, crackly, airy andlight (Fig. 5B). On the opposite, samples E and J differ from the other samplesand that they are as cohesive and sticky, whereas samples B and C presentintermediate sensory profiles. This first sensory dimension can lightly beinterpreted as a gradient of crispness, and the first group as the group of crispysamples, close to which samples G and L can be located on this axis. The firstsensory dimension also contains acoustic perception of the flakes. The pitchof the sound produced by the products during the first bites is significantlycorrelated to the perceived crispness. A sharp sound produced during thebeginning of mastication appears as an important feature of a crispy cornflake.The second canonical variable splits samples G and L from the others, whilstaccounting for 6.82% of the variation. These products are characterized by alouder and longer sound emitted during the mastication of the products, onlywhen tested dry, since the attributes “loudness” and “duration” of sound donot significantly discriminate the samples when evaluated on cereals mixedwith milk. For all other sensory attributes, there was no significant differencealong the first sensory dimension between scores for dry flakes and mixedwith milk. These results are in line with those of Gregson and Lee (2003),who suggested that cornflakes keep a crispy texture after 3 min in milk. Inour case, the time before draining, i.e., 8 s, did not lead to texture modification,which justifies carrying out the study of mechanical and acoustic propertieson dry products.
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