Abstract

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. 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.

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