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Effects of Addition of Pine Needle Extracts in Different Forms on the Antioxidant and Residual Nitrite Contents of Emulsified Sausages during Cold Storage

제조 방법이 다른 솔잎 추출물 첨가가 유화형 소시지의 냉장 저장 중 항산화 및 아질산염 잔존량에 미치는 영향

  • 김영직 (대구대학교 동물자원학과)
  • Received : 2010.11.21
  • Accepted : 2010.12.31
  • Published : 2011.02.28

Abstract

The objective of this study was to determine the shelf-life effects and residual nitrite content of emulsified sausages added with pine needles during cold storage. The sausage consisted of four types: no pine needles added (control), pine needle juice added (T1), ethanol extract of pine needles added (T2), and boiling extract of pine needles added (T3). Each sausage type was tested in triplicate and assigned to one of four storage periods: 0, 10, 20, or 30 d. As storage time increased, the presence of pine needles resulted in decreased pH, meat color (CIE $L^*$, $a^*$ and $b^*$), residual nitrite value, and increased thiobarbituric acid reactive substances (TBARS) values and total plate counts (TPC). Values for pH, TBARS, residual nitrite, total plate counts and CIE $L^*$ and $a^*$ decreased significantly with added pine needles relative to the control (p<0.05). In particular, T2 was significantly (p<0.05) more effective for delaying lipid oxidation than the other treatment groups. In conclusion, the results demonstrate that adding an ethanol extract of pine needles (T2) to emulsified sausages tended to improve antioxidative and antimicrobial effects and reduce residual nitrite content during storage compared to the other treatment groups.

유화형 소시지에 제조 방법을 다르게 추출한 솔잎 추출물을 첨가하여 냉장온도($4{\pm}1^{\circ}C$)에서 30일간 저장하면서 pH, TBARS, 총 미생물수, 육색 및 아질산염 잔존량을 조사하였다. 시험구는 솔잎을 첨가하지 않은 대조구, 솔잎즙 첨가구는 T1, 솔잎 에탄올 추출물 첨가구는 T2, 솔잎중탕 추출물 첨가구를 T3 등 4개 처리구로 나누어 0, 10, 20 및 30일간 저장하면서 실험하였다. pH는 저장기간이 경과하면서 모든 처리구에서 서서히 감소하였다(p<0.05). TBARS와 총미생물수는 저장기간 동안 증가하였으며, 솔잎 즙과 에탄올 추출물을 첨가한 유화형 소시지는 대조구보다 낮아 솔잎의 첨가는 지방산화와 미생물 성장을 지연시켰고, 특히 에탄올 추출물 첨가구인 T2에서 TBARS 값과 미생물수는 가장 낮은 경향이었다(p<005). 육색은 저장기간이 지나면서 CIE $L^*$ 값과 $a^*$ 값 및 $b^*$ 값은 감소하였고, 처리구간에는 CIE $L^*$ 값과 $a^*$ 값은 T1과 T2에서 낮았고, $b^*$ 값은 T1과 T2에서 높은 결과로 솔잎 추출물의 첨가는 소시지 색을 어둡게 하는 경향이었다. 아질산염 잔존량은 저장기간이 경과하면서 감소하였는데 T2에서 다른 시험구보다 유의하게 감소하였다. 이상의 결과를 종합적으로 고찰해보면 솔잎 에탄올 추출물 첨가는 지방의 산화와 미생물 성장 억제 및 아질산염 잔존량 감소에 효과가 가장 있을 것으로 생각된다.

Keywords

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