Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Quality Characteristics of Kwamegi (Semi-dried Coloabis saira) During Cold Air Drying after Washing with Various Washing Solutions

살균소독수로 세척한 후 냉풍건조한 꽁치과메기의 품질특성

  • Kang, Sang-Mo (School of Plant Biosciences, Kyungpook National University) ;
  • Lee, Won-Young (School of Food Science and Bio-Technology, Kyungpook National University)
  • 강상모 (경북대학교 식물생명과학부) ;
  • 이원영 (경북대학교 식품공학부)
  • Received : 2014.07.29
  • Accepted : 2015.02.25
  • Published : 2015.03.30
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Abstract

In this study, the microbial control effect after treatment of washing solutions (tap water, electrolyzed water, chlorine dioxide solution) and quality changes were investigated when Kwamegi is produced by means of the cold air drying. The initial moisture rate of the sample was 56.62% before drying. At the beginning of drying period, moisture rate sharply fell down but as the experiment progressed, moisture reducing rate was smoothly decreased. The color difference of Kwamegi before drying was 42.40, but it was reduced depending on the increment of drying temperature and time. TBA value of the initial sample was 0.219, rancidity were increased continuously when drying progressed. Total amino acid content was showed the highest value at $25^{\circ}C$ for 36h and the lowest at $40^{\circ}C$ for 12h. From the fatty acids analysis, major fatty acids were consisted of the 14:0, 16:0 and 18:1 (18.1520.96%, 28.0632.51% and 17.0619.81%, respectively). The microbial control effect was biggest when Kwamegi was washed with chlorine dioxide 100ppm for 60s. The microbe of the Kwamegi, Pseudomonas sp. and Pseudomonas putida were identified.

본 연구에서는 꽁치를 냉풍건조방법으로 생산한 과메기의 성분 변화와 세척수 처리에 따른 미생물 제어효과를 조사하였다. 건조를 하기 전 시료의 수분 함량은 56.62%였으나 초기 수분 함량이 급격히 감소하다가 시간이 지날수록 완만해지는 결과를 보였다. 건조 처리 전의 과메기의 색도차는 42.40이었으나 온도와 건조시간이 증가함에 따라 색도차의 값이 감소하였다. 건조를 하지 않은 대조구의 TBA 값은 0.219였고, 모든 온도 조건에서 건조가 진행될수록 산패도가 증가하였다. 과메기의 구성아미노산을 분석한 결과, $25^{\circ}C$에서 36시간을 건조시킨 처리구에서 총 아미노산 함량이 가장 높았으며 $40^{\circ}C$에서 12시간을 건조시킨 처리구가 총 아미노산 함량이 가장 낮았다. 건조온도와 시간에 따른 과메기의 지방산 분석 결과, 주요 지방산은 14:0, 16:0, 18:1 등이 각각 18.15~20.96%, 28.06~32.51%, 17.06~19.81%로 분포하였다. Chlorine dioxide 100 ppm에서 60초 동안 세척한 구에서 미생물제어 효과가 가장 우수하였으며 과메기의 위해미생물 동정한 결과, Pseudomonas sp.와 Pseudomonas putida 로 두 균주가 조사되었다.

Keywords

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