• 한국축산식품학회지
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• 제39권1호
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• pp.121-138
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• 2019

In the present study, comparative efficacy of natural as well as synthetic tenderizers on the quality characteristics of restructured spent hen meat slices (RSHS) was studied. Four different batches of RSHS viz. Control (without any tenderizer), T1 (1.25% calcium chloride replacing salt in formulation), T2 and T3 (1.5% each of pineapple rind and fig powder, replacing binder in the formulation) were developed in pre-standardized formulation. Vacuum tumbling was performed for 2.5 h and cooked product (RSHS) was assayed for quality attributes. Samples were packaged in aerobic conditions, stored for 21 days under refrigeration ($4{\pm}1^{\circ}C$) and were evaluated for pH, oxidative and microbial quality parameters at regular interval of 7 days. Water holding capacity of T2 was recorded the highest and significantly higher (p<0.05) than all other samples. The textural attributes of T2 were comparable to T1 but significantly higher (p<0.05) than C and T3. The colour attributes ($L^*$, $a^*$, and $b^*$ value) of T2 and T3 were improved due to use of natural tenderizers. During sensory evaluation, tenderness scores for T2 samples were recorded the highest. Throughout storage period, thiobarbituric acid reactive substances (TBARS), free fatty acids (FFA) and peroxide value (PV) followed an increasing trend for control as well as treated products; however, T2 showed a significantly (p<0.05) lower value than control and other treated samples. It can be concluded that good quality RSHS with better storage stability could be prepared by utilizing 1.5% pineapple rind powder as natural tenderizer.

• 한국축산식품학회지
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• 제34권6호
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• pp.808-814
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• 2014

This study investigated the effect of gum arabic (GA) combined with microbial transglutaminase (TG) on the functional properties of porcine myofibrillar protein (MP). As an indicator of functional property, heat-set gel and emulsion characteristics of MP treated with GA and/or TG were explored under varying NaCl concentrations (0.1-0.6 M). The GA improved thermal gelling ability of MP during thermal processing and after cooling, and concomitantly added TG assisted the formation of viscoelastic MP gel formation. Meanwhile, the addition of GA decreased cooking yield of MP gel at 0.6 M NaCl concentration, and the yield was further decreased by TG addition, mainly attributed by enhancement of protein-protein interactions. Emulsion characteristics indicated that GA had emulsifying ability and the addition of GA increased the emulsification activity index (EAI) of MP-stabilized emulsion. However, GA showed a negative effect on emulsion stability, particularly great drop in the emulsion stability index (ESI) was found in GA treatment at 0.6 M NaCl. Consequently, the results indicated that GA had a potential advantage to form a viscoelastic MP gel. For the practical aspect, the application of GA in meat processing had to be limited to the purposes of texture enhancer such as restructured products, but not low-salt products and emulsion-type meat products.

• 한국축산식품학회지
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• 제34권3호
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• pp.387-394
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• 2014

This study was conducted to determine the effect of duck feet gelatin concentration on the physicochemical, textural and sensory properties of duck meat jellies. Duck feet gelatin was prepared with acidic swelling and hot water extraction. In this study, four duck meat jellies were formulated with 3, 4, 5, and 6% duck feet gelatin, respectively. In the preliminary experiment, the increase in duck feet gelatin ranged from 5 to 20%, resulting in a significant (p<0.001) increase in the color score, but a decline in the hardness and dispersibility satisfaction scores. An increase in the added amount of duck feet gelatin contributed to decreased lightness and increased protein content in duck meat jellies. Regarding the textural properties, increase in the added amount of duck feet gelatin highly correlated with the hardness in the center (p<0.01, $R^2=0.91$), and edge (p<0.01, $R^2=0.89$), of duck meat jellies. Meanwhile, the increase in duck feet gelatin decreased the score for textural satisfaction; duck meat jellies containing 6% duck feet gelatin had a significantly lower textural satisfaction score, than those containing 3% duck feet gelatin (p<0.05). Furthermore, a significant difference in the overall acceptance of duck meat jellies formulated with 5% duck feet gelatin was observed, as compared to those prepared with 3% duck feet gelatin. Therefore, this study suggested that duck feet gelatin is a useful ingredient for manufacturing cold-cut meat products. In consideration of the sensory acceptance, the optimal level of duck feet gelatin in duck meat jellies was determined to be 5%.

• 한국식품과학회지
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• 제30권1호
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• pp.69-76
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• 1998

본 연구는 재구성육제품내 첨가제를 줄이는데 있어 예비혼합물에 첨가제를 전량 첨가하여 그 기능적 특성을 최대한 부여시킬 수 있는 첨가제의 종류와 이온강도 효과의 조건을 설정하고자 실시하였다. 육제품의 10%를 예비혼합들로 설정하여 돼지전지부위에 NaCl(0, 4.5, 9.0%), STPP (0, 2.5, 5.0%), PP (0, 2.44, 4.88%)를 각각 세단계로 이온강도를 같게 설정한 후 조합첨가하여 27가지 예비혼합물을 제조하고 pH와 추출한 단백질의 기능적 특성을 조사하였다. pH는 STPP와 PP의 첨가에 의해 증가하는 경향을 나타냈으며(p<0.01), 동일 이온강도에서 PP가 STPP에 비해 높은 pH증진효과를 보였다. 예비혼합물에서 추출한 단백질(1 M NaCl, 동일한 염추출 용액 사용)의 특성 중 총 단백질추출성에 대하여 동일 이온강도 하에서 phosphate 이온이 chloride 이온보다 추출효과가 뛰어났다. 단백질의 용해성은 NaCl 첨가로 용해성이 낮아졌으며(p<0.05), 단백질추출성이 좋을수록 용해성이 감소하는 것으로 나타났다. 원료육 내의 SH기 함량은 단백질추출성이 좋은 경우 SH기 함량이 높은 경향을 보였다. 단백질의 가열처리를 가상한 $65^{\circ}C$, 7분간의 단백질 추출물의 열처리 효과로 원료육의 SH기 함량이 낮아지고 소수성은 증가하였다(p<0.1). 그러나 세 첨가제에 의한 27가지의 예비혼합물에서 추출한 단백질의 전기영동상 형태는 차이가 나타나지 않았다. 결론적으로 첨가제의 조합에 의해 이온강도가 높아짐에 따라 기능적 특성이 증가되지는 않았으나 인산염 중 동일이온강도를 감안할 때 첨가제를 줄이는 방안으로는 STPP보다 PP가 좋은 것으로 판단되었다.