Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Kinetic Modeling for Predicting the Quality of Squid (Todarodes pacificus) during Storage and Distribution

저장유통 조건에 따른 오징어 품질예측 모델링

  • Kim, So-i (Pesticide and Veterinary Drug Residues Division, Food Safety Evaluation Dept., National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Shin, Jiyoung (Institute of Food Science, Pukyong National University) ;
  • Kim, Hyunsuk (Department of Food Science and Technology, Pukyoung National University) ;
  • Yang, Ji-young (Department of Food Science and Technology, Pukyoung National University)
  • 김소이 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과) ;
  • 신지영 (부경대학교 식품연구소) ;
  • 김현석 (부경대학교 식품공학과) ;
  • 양지영 (부경대학교 식품공학과)
  • Received : 2022.04.01
  • Accepted : 2022.06.17
  • Published : 2022.06.30
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Abstract

There are a number of methods to evaluate the quality of squid. However, when purchasing the fish, consumers and retails rely only on the sensory test and flavor in the field. Therefore, this study was aimed to prove relationship between scientific indicator and sensory test. Total viable cell count (TVC), viable cell count of Pseudomonas spp., pH and volatile basic nitrogen (VBN) were selected as scientific indicators and mesured during the storage of squid at different temperature. The squid was storaged at 3 different temperature (5℃, 15℃, 20℃). Off flavor determination time was measured by R-index, and kinetic modeling was conducted. Activation energies of off-flavor determination time, TVC, Pseudomonas spp, VBN, and pH were 51.210 kJ/mol, 42.88 kJ/mol, 50.283 kJ/mol, 72.594 kJ/mol and 41.99 kJ/mol respectively. Activation energy of off-flavor determination time was approximated to viable cell count of Pseudomonas spp., TVC, pH and VBN as an order. Especially, viable cell count of Pseudomonas spp. had best match of the activation energy. Therefore, it was judged that indicator of off-flavor determine time was viable cell count of Pseudomonas spp..

오징어의 품질을 평가하기 위한 여러 항목 들이 있으나 현장에서 소비자 및 유통업자들의 경우 주관적인 관능평가에 의존하고 있으며 소비자의 어류 구매의사 결정에 부패취가 직접적인 영향을 미칠 수 있다. 따라서 관능적 평가를 입증 할 수 있는 과학적인 품질인자를 제시하고자 하였으며, 온도와 저장시간에 따른 상호관계를 분석하였다. 과학적 품질인자로는 TVC, Pseudomonas spp., pH, VBN 으로 선정하였으며 세 가지 온도 조건에서 보관하였다. 이취발생검지시점은 R-index를 이용해 측정하고 kinetic 모델링을 진행하였다. 모델링 결과 활성화 에너지는 이취발생검지 시간이 51.210 kJ/mol, TVC는 42.888 kJ/mol, Pseudomonas spp.는 50.283 kJ/mol, VBN은 72.594 kJ/mol, pH는 41.990kJ/mol 으로 나타났다. Pseudomonas spp., TVC, pH, VBN 순으로 이취발생검지 시간의 활성화 에너지에 근사하였으며, 특히 Pseudomonas spp.는 이취발생검지 시간의 활성화 에너지와 가장 유사하였다. 따라서 오징어의 이취발생 indicator는 이취발생시간과 가장 유사한 양상을 나타내는 Pseudomonas spp.로 판단 할 수 있었다.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2021년)에 의하여 연구되었음.

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