한국수산과학회

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  • pISSN : 2234-8395
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  • eISSN : 2234-1757

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kfas, vol. 51, no. 5, pp.590-594, October, 2018
DOI. https://doi.org/10.5657/KFAS.2018.0590

Development of a Time-temperature Indicator for Managing
the Distribution Temperature of Frozen Mackerel Scomber japonicus
냉동 고등어(Scomber japonicus)의 유통 온도 관리를 위한
Time-temperature Indicator 개발

최정욱1·이민경1·최재혁2·장명기2·안동현3·남택정1,4*
1부경대학교 수산과학연구소, 2디바이스넷, 3부경대학교 식품공학과/식품연구소, 4부경대학교 식품영양학과,

We developed a time-temperature indicator (TTI) that rapidly determines whether frozen mackerel Scomber japonicus
has thawed during its distribution. Our TTI was made from filter paper capable of absorbing mackerel exudate
that was soaked in a 20% citric acid solution at pH 4.0 and then dried. The dried absorbent paper was cut and attached
to blue litmus paper with a 2 mm overhang. The fixed litmus paper was covered with a polypropylene film and sealed.
The indicator was placed inside a polyvinyl vacuum package containing the mackerel sample. The vacuum-sealed
packaged was frozen at -20℃ for 24 h. After freezing, the color change and time dependence of the indicator were
observed at room temperature (25℃) and demonstrated the utility of this TTI for rapidly determining whether frozen
mackerel underwent thawing during distribution.

Keyword : Key words: Time-temperature indicator, Frozen fish, Mackerel

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