3.4. Sensory evaluation
The results of the sensory assessment of samples are given in Fig 7. Samples were considered to be acceptable for human consumption until the sensory score reached 4 (Ojagh et al., 2010).
As shown, until the day 6, there was no significant difference in the overall acceptability among all treatment groups (P < 0.05); however, compared with the fish fillets coated with Ch and Nch, the overall acceptability of the control samples (lots C and AC) decreased sharply from days 6e12, and they had significant lower scores on days 9 and 12 (P < 0.05). Li et al. (2012) observed a significant
decrease in the overall acceptability after 8 days of storage
of untreated large yellow croaker, which agreed well with a
concomitant shift in bacterial counts. Similarly, in this study, sensory
evaluation results appeared to be correlated to microbial and
chemical value analyses.