Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Effects of Combined Treatment of Aqueous Chlorine Dioxide and Fumaric Acid on the Microbial Growth in Fresh-cut Paprika (Capsicum annuum L.)

신선편이 파프리카의 미생물 생장에 있어서 이산화염소수와 푸마르산 병합처리의 효과

  • Jung, Seung-Hun (Department of Food Science and Technology, Chungnam National University) ;
  • Park, Seung-Jong (Department of Food Science and Technology, Chungnam National University) ;
  • Chun, Ho-Hyun (Department of Food Science and Technology, Chungnam National University) ;
  • Song, Kyung Bin (Department of Food Science and Technology, Chungnam National University)
  • Received : 2013.08.28
  • Accepted : 2013.10.22
  • Published : 2014.03.31
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Abstract

The effects of combined treatment of aqueous chlorine dioxide ($ClO_2$) and fumaric acid on the microbial growth in fresh-cut paprika were investigated. After the combined treatment, the populations of total aerobic bacteria and inoculated Listeria monocytogenes in the paprika sample were reduced by 0.82 and 1.21 log CFU/g, respectively, compared to those of the control. In addition, after 10 d of storage at $10^{\circ}C$, the populations were decreased by 1.21 and 2.10 log CFU/g, respectively. The predictive model for the populations of total aerobic bacteria and L. monocytogenes in the paprika was applied during storage. The prediction equation using Gompertz model was appropriate, based on the statistical analysis such as accuracy factor and bias factor. These results suggest that the combined treatment of aqueous $ClO_2$ and fumaric acid can be an effective technology for microbial decontamination and it can improve microbial safety by decreasing maximum growth rate and increasing lag time of bacteria in the fresh-cut paprika.

신선편이 파프리카의 이산화염소수와 푸마르산의 병합 살균 처리의 효과와 그에 따른 미생물의 생장 변화를 분석하였다. 병합처리를 통해 파프리카에서의 총 호기성 세균과 접종된 L. monocytogenes는 대조구에 비해 각각 0.82, 1.21 log CFU/g의 감균 효과를 얻었다. 또한 저장 10일 후에는 미생물 수가 1.21, 2.10 log CFU/g 감소하였다. 파프리카 시료를 10일간 저장하면서 미생물 수를 측정한 결과를 Gompertz model을 이용하여 최대성장속도와 유도기를 구함으로써 미생물의 생장 예측 모델에 적용하였다. 모델 식의 적합성 평가를 위해 $R^2$, $A_f$, $B_f$, 등의 값을 계산한 결과, 모두 1에 가까운 결과가 나와 측정값과 예측된 값 사이의 적합성이 뛰어났다. 따라서 본 연구결과는 이산화염소수와 푸마르산의 병합처리는 신선편이 파프리카에 오염된 미생물 수를 감소시킬 뿐 만 아니라, 미생물의 최대성장속도를 감소시키고 유도기를 증가시킴으로써 미생물 생육을 제어할 수 있음을 보여준다.

Keywords

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