Quality Characteristics and Palatability of Ground Pork Meat Containing Lotus Leaf and Root Extracts

연잎 및 연근 추출물을 함유한 분쇄돈육의 품질 특성 및 기호성

  • Lee, Kyung-Soo (Division of Food Beverage and Culinary Arts, Youngnam College of Science and Technology) ;
  • Kim, Ju-Nam (Division of Food Beverage and Culinary Arts, Youngnam College of Science and Technology) ;
  • Jung, In-Chul (Division of Hotel Culinary Arts, Daegu Technical College)
  • 이경수 (영남이공대학교 식음료조리계열) ;
  • 김주남 (영남이공대학교 식음료조리계열) ;
  • 정인철 (대구공업대학교 호텔외식조리계열)
  • Received : 2012.11.22
  • Accepted : 2012.12.17
  • Published : 2012.12.31

Abstract

This study was conducted to investigate the effects of addition of lotus (Nelumbo nucifera) leaf and root extracts on the quality and sensory characteristics of ground pork meat. Four types of ground pork were evaluated: 5% ice water added (T0), 5% lotus leaf extract added (T1), 2.5% lotus leaf extract and 2.5% root extract added (T2), and 5% lotus root extract added (T3). There were no significant differences in moisture, protein, fat, ash, cooking yield, moisture retention, water holding capacity, reduction in diameter, a-value (redness), b-value (yellowness), VBN content (volatile basic nitrogen), hardness, springiness, cohesiveness or chewiness. The fat retention was highest in T0 (p<0.05). The L-values (lightness) of T2 and T3 were higher than those of T0 and T1 (p<0.05). The pH was lowest in T1 (p<0.05). The TBARS (2-thiobarbituric acid reactive substances) values of T0, T1, T2, and T3 were 0.47, 0.17, 0.21, and 0.32 mgMA/kg, respectively, with that of T1 being significantly lower than those of the other samples (p<0.05). The contents of free amino acids related to sweet taste was 642.5 ppm for T1, which was highest among the samples (p<0.05). The flavor was highest in T1 (p<0.05). These results suggest that lotus leaf extracts improved the lipid oxidation and flavor of ground pork meat.

본 연구는 연잎 및 연근 추출물이 분쇄돈육의 품질 및 기호성에 미치는 영향을 검토하였다. 분쇄돈육은 돈육등심에 냉수 5% 첨가(T0), 연잎 추출물 5% 첨가(T1), 연잎 추출물 2.5% 및 연근 추출물 2.5% 첨가(T2) 그리고 연근 추출물 5% 첨가(T3) 등 네 종류를 제조하였다. 수분, 단백질, 지방 및 회분 함량은 시료들 사이에 유의한 차이가 없었다. 가열수율, 수분 보유율, 보수력 및 직경감소율은 시료들 사이에 차이가 없었지만 지방 보유율은 T0가 가장 높았다(p<0.05). L-value(명도)는 T2 및 T3가 T0 및 T1보다 유의하게 높았지만(p<0.05) a-value(적색도) 및 b-value(황색도)는 시료들 사이에 유의한 차이가 없었다. pH는 T1이 가장 낮았으며(p<0.05), VBN 함량은 시료들 사이에 유의한 차이가 없었다. TBARS 값은 T0, T1, T2 및 T3가 각각 0.47, 0.17, 0.21 및 0.32 mg MA/kg으로 연잎 추출물을 첨가한 T1이 가장 낮았다(p<0.05). 기계적 조직감으로 측정한 경도, 탄성, 응집성 및 저작성은 시료들 사이에 유의한 차이가 없었다. 단맛을 내는 유리아미노산은 T1이 642.5 ppm으로 가장 높았다(p<0.05). 관능특성 중 맛, 조직감, 다즙성 및 전체적인 기호성은 시료들 사이에 유의한 차이가 없었지만, 풍미는 T1이 가장 높았다(p<0.05). 이상의 결과를 종합하여 보면 연잎 추출물의 첨가가 지방산화를 억제하고 풍미를 개선시키는데 효과적이었던 것으로 나타났다.

Keywords

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