Journal
JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY
Volume 27, Issue 1, Pages 35-47Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10498850.2017.1400630
Keywords
Yellowfin tuna; water migration; quality; low-field nuclear magnetic resonance of proton (LF-NMR); multiple linear regression
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Funding
- National 13th Five-Year Key Research and Development Program for Science and Technology Support [2016YFD0400106]
- Shanghai Science and Technology Key Project on Agriculture from Shanghai Municipal Agricultural Commission [(2016) 1-1]
- Shanghai Engineering Research Center Construction Special Fund from Shanghai Municipal Science and Technology Commission [16DZ2280300]
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This study investigated postmortem changes of yellowfin tuna (Thunnus albacares) and water migration upon storage at 0 degrees C and 4 degrees C as determined by low-field nuclear magnetic resonance (LF-NMR H-1). It clearly showed that with increasing storage time, sensory scores and physical evaluations (hardness, chewiness), proton density of the water, and moisture content decreased, while total volatile basic nitrogen (TVB-N), K value, aerobic plate counts (APCs), and psychrotrophic bacterial counts increased. The results of LF-NMR showed that T-21 (trapped water) had extremely significant correlations with sensory evaluation, texture profile analysis, TVB-N, K value, APC, and psychrotrophic bacteria (p < 0.01) and established multiple linear regression. It was concluded that the LF-NMR was an important technique to evaluate storage time and temperature of yellowfin tuna's quality in terms of water migration during low-temperature storage.
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