Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Evaluation of Textural Properties of Low-salt Pork Shoulder Comminuted Meats with Transglutaminase under Phosphate Combinations

인산염 조합에 따른 Transglutaminase를 첨가한 저염 돈육 목심 세절육의 물성 증진 효과

  • Kim, Hyeong-Sang (Department of Animal Science and Biotechnology Research Institute, Chonnam National University) ;
  • Chin, Koo-Bok (Department of Animal Science and Biotechnology Research Institute, Chonnam National University)
  • 김형상 (전남대학교 동물자원학부 및 생물공학연구소) ;
  • 진구복 (전남대학교 동물자원학부 및 생물공학연구소)
  • Received : 2010.01.22
  • Accepted : 2010.03.29
  • Published : 2010.04.30
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Abstract

This study was performed to evaluate functional and textural properties of low-salt pork meat products treated with transglutaminase (TG) using sodium polyphosphate (STPP) and sodium pyrophosphate (SPP). In experiment 1, lightness and yellowness decreased (p>0.05), but moisture content and cooking yield (%) increased with increased salt level (p<0.05). Based on these results, at least 1.0% salt was required to manufacture comminuted pork meat without quality defects. The effect of STPP and SPP with TG in low-salt (1%) pork comminuted shoulder meat products was evaluated in experiment 2. pH values increased with the addition of phosphate (p<0.05), with pH values in treatments containing TG and PP alone or in combination being higher than those with STPP alone (p<0.05). Cooking yield of treatments with TG and phosphates was higher than those without phosphates, but lower than CTL (1.5% salt and 0.4% STPP; p<0.05). Springiness of pork comminuted meat containing SPP was higher than those of CTL (p<0.05). These results indicate that low-salt meat products can be produced by the combination of TG and phosphate either alone or in combination to maintain cooking yield and textural properties.

본 연구는 돈육 목심 세절육에서 식염함량의 저하에 따른 기능성 및 조직감을 분석하였고, 저염 육제품의 transglutaminase(TG)와 두 종류의 인산염(sodium polyphosphate, STPP; sodium pyrophosphate, SPP)을 첨가하여 저염 돈육제품의 물성을 증진시키기 위해 수행되었다. 식염함량에 따른 목심 균질육의 특성을 평가한 실험 1에서는 식염함량이 증가함에 따라 지방 함량, 명도 그리고 황색도는 감소한(p<0.05), 반면, 수분 함량과 가열수율은 증가하였다(p<0.05). 실험 1의 결과에 따라 1.0% 식염함량을 저염조건으로 저염 돈육 목심 세절육에서 TG와 두 종류의 인산염(STPP, SPP)의 단일 혹은 복합첨가 효과를 조사하였다(실험2). 실험 2에서는 인산염을 첨가함에 따라 pH가 유의적으로 상승하였으며(p<0.05), 특히 SPP가 단일 또는 STPP와 혼합하여 첨가된 처리구는 STPP를 단일 첨가한 처리구에 비해 높은 pH값을 보였다(p<0.05). TG와 인산염을 첨가한 처리구들은 대조구 보다는 낮고 인산염 무첨가구 보다는 높은 가열수율의 결과를 나타냈다(p<0.05). 조직감 검사에서는 탄력성 항목에서 SPP를 단일 첨가한 처리구가 대조구보다 높은 값을 나타냈다(p<0.05). 따라서 저염 조건에서 인산염의 첨가를 통한 가열수율의 저하를 보완하고, TG 첨가를 통하여 조직감을 증진시켜 기능성 저염 육제품의 제조가 가능할 것으로 사료된다.

Keywords

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