The null hypothesis for the triangle test was: samples ‘A’ and ‘B’
are dissimilar with statistically significant differences in their
sensory appeal. The panelists did not discern any significant differences
between A and B on day 0 (p ¼ 0.0583). But, during the test
on day 14 the panelists distinctly identified differences between the
control orange juice and the orange juice with peptide fraction
(p ¼ 0.00058). Using the triangle test results it was inferred that
panelists failed to see any difference between freshly made orange
juice samples but on storage, the difference was evident. This can
be due to the interaction of the peptide fraction with orange juice
components over the storage period, which could have potentially
led to formation of off-flavor compounds. Table 1 shows the scores
from the panelists for the test samples. On a Hedonic scale of 1e9,
the scores given were between 6.3 and 7.6, which is significantly
high. The panelists found no significant differences between color
and texture attributes of the orange juice with or without peptide
over storage period. However, the panelists gave low scores for the
overall liking and flavor for sample ‘B’ on both days.