Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Antioxidant and Irradiation Treatment under Freezing Temperature Conditions on Physicochemical and Sensory Properties of Tarakjuk (Milk Porridge)

항산화제 첨가 및 냉동 방사선 조사 병용처리가 타락죽의 이화학적 및 관능적 품질에 미치는 영향

  • Han, In-Jun (Dept. of Food and Nutrition, Sunchon National University) ;
  • Song, Beom-Seok (Dept. of Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Jae-Hun (Dept. of Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Jong-Heum (Dept. of Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Lee, Ju-Woon (Dept. of Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Chun, Soon-Sil (Dept. of Food and Nutrition, Sunchon National University)
  • 한인준 (순천대학교 식품영양학과) ;
  • 송범석 (한국원자력연구원 정읍방사선과학연구소) ;
  • 김재훈 (한국원자력연구원 정읍방사선과학연구소) ;
  • 박종흠 (한국원자력연구원 정읍방사선과학연구소) ;
  • 이주운 (한국원자력연구원 정읍방사선과학연구소) ;
  • 전순실 (순천대학교 식품영양학과)
  • Received : 2011.09.22
  • Accepted : 2011.10.20
  • Published : 2011.12.31
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Abstract

This study evaluated the effect of antioxidants treatment; (Vit. C and E) on the physicochemical and sensory properties of Tarakjuk treated with gamma-irradiation under two different temperature conditions, e.g. room and frozen temperatures. In samples of Tarakjuk irradiated at room temperature, Vit. C gradually decreased the pH level as the concentration increased (p<0.05), whereas Vit. E did not. Addition of both Vit. C and E to Tarakjuk decreased TBA (2-thiobarbituric acid) value while also increasing viscosity. However, these antioxidants did not cause any change in Hunter's color values. Sensory properties showed that Vit. C and E significantly improved the overall acceptability of Tarakjuk, and the addition of 0.1% each Vit. C and E was best treatment. In samples of Tarakjuk subjected to combined treatment with antioxidants and irradiation under frozen temperature conditions, Vit. C and E were effective in decreasing TBA value, improving viscosity, and maintaining sensory quality. Especially, co-treatment with 0.1% Vit. C and E augmented the observed effect (p<0.05). Therefore, combined treatment with antioxidants and irradiation under frozen temperature conditions could improve the final sensory quality of gamma-irradiated Tarakjuk.

방사선 조사에 따른 타락죽의 관능적 품질 저하를 개선하기 위한 연구의 일환으로 항산화제(Vit. C 및 Vit. E) 첨가 후, 실온 또는 냉동 방사선 조사와의 병용처리가 타락죽의 이화학적 및 관능적 품질에 미치는 영향을 평가하였다. 항산화제 첨가와 실온 방사선 조사 효과를 확인한 결과 타락죽의 pH는 Vit. E 첨가에 따른 변화가 없었으나, Vit. C의 경우 첨가량이 증가함에 따라 유의적으로 감소하였다(p<0.05). 지방산패도와 점도의 경우 Vit. C 및 Vit. E 첨가량이 증가할수록 방사선 조사에 의한 지방산화 및 점도의 감소가 유의적으로 억제되는 것으로 나타났다. 색은 Vit. C 및 Vit. E 첨가에 의한 변화는 없는 것으로 나타났다. 관능평가 결과 Vit. C 및 Vit. E 첨가구는 무첨가구에 비해 방사선 조사 타락죽의 품질을 유의적으로 향상시키는 것으로 나타났으며, 각각 0.1% 첨가구가 가장 좋은 것으로 나타났다. 항산화제(Vit. C 및 Vit. E 0.1%)와 냉동 방사선 조사 병용처리 효과를 확인한 결과, 항산화제와 냉동 방사선 조사 병용처리 시 방사선 조사에 의한 지방산패와 점도 감소 억제 및 관능적 품질저하의 개선에 매우 효과적인 것으로 나타났으며, 특히 Vit. C 및 Vit. E를 각각 0.1%씩 함께 첨가할 경우 효과가 가장 좋은 것으로 나타났다. 따라서 방사선 조사에 의한 타락죽의 관능적 품질 저하는 0.1%의 Vit. C 및 Vit. E를 각각 혼합 첨가와 냉동 방사선 조사의 병용처리를 통해 타락죽의 품질을 가장 효과적으로 개선시킬 수 있을 것으로 사료되었다.

Keywords

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