期刊
MOLECULES
卷 24, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/molecules24173119
关键词
bigeye tuna (Thunnus obesus); water dynamics; volatile organic compounds; ATP-related compounds; low-field nuclear magnetic resonance; gas chromatography/mass spectrometry (SPME-GC/MS)
资金
- National 13th Five-Year Key Research and Development Program for Science and Technology Support [2016YFD0400106]
- Shanghai Municipal Agricultural Commission [(2016) 1-1]
- Shanghai Engineering Research Center Construction Special Fund from Shanghai Municipal Science and Technology Commission [17DZ2293400]
Volatile organic compounds (VOCs) and water play a key role in evaluating the quality of aquatic products. Quality deterioration of aquatic products can produce some off-odour volatiles and can induce water content changes. However, no previous study has investigated a correlation between water dynamics and VOCs of bigeye tuna during cold storage. The changes in VOCs, water dynamics and quality attributes of bigeye tuna (Thunnus obesus) upon storage at 0 q degrees C and 4 degrees C for 6 days were investigated. The results showed that the values of ATP, adenosine diphosphate (ADP), adenosine monophosphate (AMP), T-21 (trapped water) and the relative value of T-1 decreased (p < 0.05), while drip loss and histamine contents increased (p < 0.05), which indicated quality deterioration during cold storage. With haematoxylin and eosin (HE) staining, muscle tissue microstructure was observed. VOCs such as hexanal, heptanal, 4-Heptenal, (Z)-, pentadecanal-, 1-pentanol, 1-hexanol significantly increased, which sharply increased the content of off-odour volatiles. T-21 was positively correlated with 1-octen-3-ol, 1-penten-3-ol, while T-21 was negatively correlated with hexanal, 1-hexanol. Therefore, good correlations between water dynamics and some VOCs were detected during quality deterioration of bigeye tuna throughout cold storage.
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