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KMID : 1007520210300091213
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Food Science and Biotechnology
2021 Volume.30 No. 9 p.1213 ~ p.1223
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Effect of different thawing methods on the quality of mackerel (Pneumatophorus japonicus)
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Zhou Peng-Cheng
Xie Jing
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Abstract
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Five thawing methods such as flow water thawing, ultrasonic flowing water thawing, air thawing, microwave thawing and low temperature thawing were used, and the physical, chemical properties and structure of mackerels after thawing were assessed. The results showed that the low temperature thawing had the best water retention, lower protein and fat oxidation. The microwave thawing had the shortest thawing time, but uneven heating leads to partial maturation. Air thawing prolonged exposure to air leads to high levels of protein and fat oxidation. The flow water thawing had better water retention than that of the ultrasonic flowing water thawing, only the thawing time was slightly longer than that of the ultrasonic flowing water thawing. In general, the low temperature thawing performed well after thawing. The flow water thawing used only 1/43 of the low temperature thawing's elapsed time after sacrificing some acceptable qualities. Thus, flow water thawing is more suitable for thawing frozen mackerel.
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KEYWORD
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Mackerel, Thawing, Quality change, Microwave thawing, Flowing water thawing
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