Application of the Mole Ratio of TMA to TMAO to the Freshness Evaluation for Brachypomum

Abstract:

In order to evaluate the freshness of aquatic products simply and effectively，the usage of the mole ratio of TMA to TMAO（nTMA/nTMAO） was investigated during the storage of Brachypomum. Results showed that during the initial stage the ratios were small and increased steadily with extended storage，and a significant turning point appeared for the secondary freshness and the ratios then increased rapidly. Good correlations between nTMA/nTMAO and TVB-N，TVC were observed and all correlation coefficients were larger than 0.900. Therefore，the mole ratio of TMA to TMAO could be used as an effective method to evaluate the freshness of aquatic products.