Dynamic changes in the quality of grass carp muscle after death: from the perspective of muscle degradation and flavor evolution
This study investigated the dynamic changes and correlation between muscle quality and flavor of grass carp during refrigeration and room temperature storage after death. The results showed that during storage, lipids, proteins, and ATP in muscles gradually degraded, related biochemical indicators deteriorated, and muscle structural integrity decreased. Volatile component analysis shows that the main products are aldehydes, ketones, and alcohols. The electronic nose detected a strong response to nitrogen oxides, alcohols, and aldehydes and ketones; The electronic tongue indicates an increase in bitterness and astringency, and a decrease in umami taste. Relevant analysis shows that muscle degradation is closely related to flavor changes, collectively leading to a decline in fish quality.