Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effects of Green Tea Extracts on Quality Characteristics and Reduced Nitrite Content of Emulsion Type Sausage during Storage

녹차 추출물의 첨가가 저장 중 유화형 소시지의 품질 특성 및 아질산염 감소에 미치는 영향

  • Yang, Han-Sul (Department of Animal Science, Gyeongsang National University) ;
  • Jeong, Jin-Yeon (Department of Animal Science, Gyeongsang National University) ;
  • Lee, Jeong-Ill (Advanced Swine Research Institute, Gyeongnam Province) ;
  • Yun, I-Ran (Gyeongnam Livestock Promotion Institute) ;
  • Joo, Seon-Tea (Department of Animal Science, Gyeongsang National University) ;
  • Park, Gu-Boo (Department of Animal Science, Gyeongsang National University)
  • 양한술 (경상대학교 동물자원과학부) ;
  • 정진연 (경상대학교 동물자원과학부) ;
  • 이정일 (경상남도 첨단양돈연구소) ;
  • 윤이란 (경상남도 축산진흥연구소) ;
  • 주선태 (경상대학교 동물자원과학부) ;
  • 박구부 (경상대학교 동물자원과학부)
  • Published : 2006.12.31
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Abstract

This study was carried out to investigate the effects of addition of green tea extract material with or without nitrite (0.02 g) on the quality characteristics and reduced nitrite content of emulsion-type sausages during 4 weeks of storage at $4^{\circ}C$. The treatments were; non-added nitrite and green tea extract (0, added nitrite and non-added green tea extract (T1), added nitrite and 0.2% green tea extract (T2), added nitrite and 0.5% green tea extract (T3), and added nitrite and 1% green tea extract (T4). The lightness $(L^*)$ of sausage containing nitrite and green tea extract together were significantly lower than control and T1 (p<0.05). The redness $(a^*)$ of sausage containing only nitrite (T1) and, nitrite and green tea extract at 1% (T4) were significantly higher than control (p<0.05). The total expressible fluid (%) of sausage containing nitrite and green tea extract were significantly lower than control (p<0.05). Cohesiveness of sausage containing green tea extract were significantly lower than control (p<0.05) at 2 and 4 weeks storage period. Addition of nitrite and green tea extract decreased the TBARS values (p<0.05). It was also found that natural extract (green tea) treatments decreased TBARS formation more than only added nitrite (Tl) (p<0.05). The changes of total plate count and coliform plate count were increased during storage time. The total plate count of T1 was higher at 4 weeks of storage period, while the coliform plate count was higher in control at 2 and 4 weeks of storage period compare to other treatments. The residual nitrite content was decreased during storage time in all treatment except control and the effectiveness of decreasing ability was higher with increasing green tea extract.

본 연구는 녹차 추출물이 저장중 소시지의 품질 특성 및 아질산염 함량에 미치는 효과를 확인하고자 실시하였다. 육색의 경우, 아질산염 및 녹차 추출물 첨가구(T2, T3, T4)는 대조구 및 아질산염 첨가구에 비해 낮은 명도 값을 보이며, 녹차 추출물의 첨가수준이 증가할수록 낮은 명도 값을 나타내었다(p<0.05). 유화 안정성을 나타내는 총유출량(TEF, %)과 가열 감량의 경우, 대조구에 비해 모든 아질 산염 및 녹차추출물을 첨가한 처리구에서 낮게 나타나며, 녹차 추출물 첨가에 비해 오직 아질산염만을 첨가한 T1에서 유의적으로 낮은 TEF 값을 나타내었다(p<0.05). 그러나 앞의 유화 안전성 결과와는 달리 가열 감량의 경우, 아질산염 첨가구에 비해 0.2%녹차 추출물을 첨가한 T2에서 가장 낮은 값이 나타났다(p<0.05). 조직감 측정 결과 녹차 추출물을 첨가시 경도, 응집성 및 검성을 감소시키는 경향을 보여주며(p<0.05), 특히 TBARS 측정 결과 대조구에 비해 아질산염이 첨가된 처리구 1에서 낮은 TBARS 값을 보이며(p<0.05), 녹차 추출물이 첨가된 처리구 2, 3 및 4의 경우, 저장 4주차에 $0.76{\sim}0.89$로 저장 1주차에 대조구 및 처리구 1의 1.90 및 1.45보다 낮은 값을 나타내었다(p<0.05). 또한 녹차 추출물의 첨가시 대장균수를 감소시킬 뿐만 아니라,녹차 추출물의 첨가시 아질산염 함량을 감소를 가져오며, 녹차 추출물의 첨가 수준이 증가할수록 아질산염 함량은 유의적인 감소하였다(p<0.05) 이상의 결과로 보아 녹차 추출물은 유화형 소시지의 아질산염 소거제로서의 가능성과 항균제 및 항산화제로서 육제품 내 첨가가 가능할 것이라 판단된다.

Keywords

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