Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Effect of Chlorine Dioxide Treatment on Microbial Growth and Qualities of Fish Paste during Storage

이산화염소 처리가 어묵의 저장 중 미생물학적 변화 및 품질에 미치는 영향

  • Shin, Hee-Young (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Lee, Yeon-Ju (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Park, In-Young (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Kim, Ju-Yeon (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Oh, Su-Jin (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Song, Kyung-Bin (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University)
  • 신희영 (충남대학교 식품공학과) ;
  • 이연주 (충남대학교 식품공학과) ;
  • 박인영 (충남대학교 식품공학과) ;
  • 김주연 (충남대학교 식품공학과) ;
  • 오수진 (충남대학교 식품공학과) ;
  • 송경빈 (충남대학교 식품공학과)
  • Published : 2007.03.31
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Abstract

Effect of chlorine dioxide ($ClO_2$) treatment on the microbial and physicochemical changes of fish paste was investigated. Fish paste samples were treated with 5, 10, and 50 ppm of $ClO_2$ solution, respectively, After $ClO_2$ treatment, fish paste samples were individually packaged and stored at 4$^{\circ}C$. The initial microbial loads of samples were 3.8 log CFU/g in total bacterial count, and 2.5 log CFU/g in yeasts and molds. Microbial growth of fish paste during storage showed that populations of total bacteria, yeast and mold were significantly reduced by $ClO_2$ treatment. In particular, the treatment of 50 ppm $ClO_2$ decreased total bacterial count the most significantly among the $ClO_2$ treated fish pastes. The pH and VBN of fish paste decreased with increasing $ClO_2$ concentration. Thiobarbituric acid reacted substance (TBARS) values of treated fish paste increased during storage, regardless of $ClO_2$ concentration. This study showed that 50 ppm chloride dioxide was the optimum dose level to extend the shelf-life of fish paste.

어묵에 이산화염소 용액을 농도별로 처리하여 미생물에 대한 살균효과 및 품질에 관련된 이화학적 특성 변화를 조사하였다. 어묵의 저장 초기, 총 호기성균은 대조구 3.8log CFU/g, 50ppm 처리군은 2.81log CFU/g로 차이를 나타내었으며, 효모와 곰팡이 역시 대조구는 2.47log CFU/g, 50ppm 처리군 1.60 log CFU/g 으로 이산화염소 처리 시 미생물 감균 효과가 우수하였다. 저장 9일차 총 호기성균의 대조구와 5ppm은 각각 6.36log CFU/g, 6.11 log CFU/g로 부패 초기 현상을 보였으나 10, 50 ppm은 각각 5.91, 5.48log CFU/g로 위생학적 안전함을 보였다. 효모와 곰팡이 역시 저장 12일에 대조구와 5ppm은 각각 6.42, 6.01 log CFU/g로 부패 초기 단계에 근접하였으나 10, 50ppm은 각각 5.30, 5.03 log CFU/g로 이산화염소 처리농도에 따라 미생물이 감소하는 경향을 보였다. pH는 저장기간이 증가할수록 감소하였으며 이산화염소의 처리 농가가 높을수록 더 낮은 pH를 나타내었다. VBN 값은 저장기간이 증가할수록 증가하였으나 저장 12일차 대조구가 18.1mg%를 나타내었고, 50 ppm에서는 9.3mg%를 나타내었다. TBARS 값은 저장기간이 증가함에 따라 증가하였는데, 이산화염소 용액의 농도에 따른 큰 차이는 보이지 않았다. 관능검사를 실시한 결과 이산화염소 용액의 농도가 증가할수록 평가 점수가 높음을 확인할 수 있었다. 따라서 이산화염소 용액의 처리가 어묵의 미생물학적 안전성을 증대시킴으로써 유통기한 연장에 도움이 된다고 판단된다.

Keywords

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