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KMID : 0613820170270091011
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Journal of Life Science
2017 Volume.27 No. 9 p.1011 ~ p.1019
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Quality Characteristics of Mackerel Immersed in Sea Wind Mugwort Extract
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Oh Sun-Kyung
Son Hae-Reon
Kim Kee-Woong
Bae Sang-Ok
Kim Sung-Yong
Choi Myeong-Rak
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Abstract
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This study examined the influence of sea wind mugwort extract treatment on quality characteristics of mackerel during storage. Mackerel were packaged individually and then immersed in 5% sea wind mugwort extract for 2, 3, or 4 hr and stored at -20℃. The salinity of a control (no treatment) and that of mackerel immersed in sea wind mugwort for 2 hr was lowest (0.07%). pH of 5.90-6.23, and the change in acidity was in the opposite range. Immersion for 2, 3, and 4 hr led to a decrease in the tensile strength of the samples following storage, whereas the tensile strength of the control increased. The volatile basic nitrogen (VBN) content of the mackerel immersed for 2 hr was significantly lower than that of the control (5.6-15.4 mg% vs. 4.2-50.7 mg%). In the mackerel immersed for 2 hr, the total polyphenol and total flavonoid content was 286.3-497.0 mg gallic acid equivalents (GAE)/100 g and 177.5-385.6 mg quercetin equivalents (QE)/100 g, respectively. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2-azino-bis(3-ethyl-benzothizoline-6-sulfonic acid) (ABTS) radical scavenging activities of the mackerel immersed in sea wind mugwort for 2 hr were 50.6% and 61.3%, respectively. Overall, the immersion of mackerel in sea wind mugwort for a short time significantly improved quality characteristics, such as salinity, pH, acidity, hardness, antioxidant activity, and perceptible quality, following storage.
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KEYWORD
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Antioxidant activity, Artemisia, Scomber japonicas, volatile basic nitrogen
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