indicator of the quality of chicken products. The above results show that
the ohmically heated samples contained more IMP than retort-heated
samples, allowing for the preparation of higher-quality samples. This
is ascribed to the higher temperature increase rate under ohmic heating,
which restricts IMP reduction caused by heating.
3.8. Glutamic acid content
The changes in glutamic acid concentration are shown in Fig. 10. For
all storage periods, the ohmically heated samples had higher glutamic
acid concentration than the retort-heated samples. However, significant
differences were found only in the samples stored for 14, 84, 168, and
280 days (p b 0.05). Glutamic acid did not fluctuate greatly in both
sample types. Based on these findings, it was suggested that the
glutamic acid concentration did not change during storage.