• Food Science of Animal Resources
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• v.20 no.3
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• pp.222-229
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• 2000

본 연구는 동결 및 재동결 처리가 계육의 부위별 품질특성에 미치는 영향을 검토하기 위해 서 실시하였다. 드립감량은 동결육이 재동결육보다 낮았으며, 가슴육이 다리 및 날개육보다 높았다. 가열감량은 재동결육, 동결육 및 신선육의 순으로 높게 나타났다. L, a 및 b 값은 동결에 의한 차이는 없었으나, L 값은 가슴육이 다리 및 날개육이 가슴육보다 높았다. 수용성 단백질 추출성의 신선육 및 동결육이 재동결육보다 높았으며 , 다리 및 날개육이 가슴육보다 높았다. 염용성 단백질 추출성의 경우, 신선육, 동결육 및 재동결육의 순으로 높았고, 가슴육이 다리 및 날개육보다 높았다. 보수력은 신선육, 동결육 및 재동결육의 순으로 우수하였고, 부위별로는 다리, 날개 및 가슴육의 순이었다. 신선육 및 동결육의 pH는 재동결육보다 낮았으며 다리 및 날개육이 가슴육보다 높았다. TBA 및 VBN은 재동결육, 동결육 및 신선육의 순으로 높았고, 다리 및 날개육의 TBA는 가슴육보다 높았으나, VBN은 낮은 편이었다. 기호성은 신선육이 재동결육보다 우수하였고, 부위별로는 다리 및 날개육이 가슴육보다 우수하였다.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.283-287
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• 2004

본 연구는 오리육의 출하 일령에 따른 수율 및 물리적 특성, 지방산 조성의 변화 구명하고자 수행하였다. 지방산에서 Oleic acid(C18:1, n9)는 45일에서 70일령으로 증가함에 따라50.87에서 51.32%로 높아졌다. Docosahexaenoic acid(C22:6, n3, DHA)는 가슴 육에서는 전혀 검출되지 않았으나 다리 육에서 $0.13{\sim}0.28%$로 미량이 검출되었다. 육색에서 적색 도를 나타내는 $a^{\ast}$값은 가슴부위에서 $16.67{\sim}17.92$를 나타냈고 다리는 $15.81{\sim}17.15$로 나타나 가슴 및 다리육의 적색도가 비슷한 경향을 나타냈다. 가열 감량은 가슴 육에서 $26.37{\sim}28.79%$이고 다리 육은 $30.32{\sim}31.32%$로 다리 육에서 가열감량이 $2{\sim}4%$증가한 것으로 나타났다. 전단력에서는 45일령이 2.20, 70일령 2.84로 사육일령이 증가함에 따라 함께 증가하였다. 우리나라 오리고기의 평균치인 2.1kg의 부분 육별 수율은 통 다리가 14.1%, 통 날개 8.7%, 통 가슴 12.5%로 통 다리와 통 가슴의 비율이 거의 유사하게 나타났다.

• Food Science of Animal Resources
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• v.25 no.2
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• pp.162-167
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• 2005

This study was carried out to investigate the effect of ultrasound treatment on the quality, amino acid and fatty acid composition of fried chicken meat The moisture content of raw chicken meat was higher than fried chicken meat, but the crude protein and fat were lower than those of fried chicken meat The moisture and crude fat of ultrasonic fried chicken meat were higher than those of control. The crude protein of breast meat was higher than leg meat, but the moisture and crude fat were lower than leg meat The ultrasonic treatment did not affect on calorie of the fried chicken meat The pH of leg meat was higher than breast meat, and the fried loss of breast meat was higher than leg meat Frying loss of the leg meat was higher than that of control when ultrasonic treated The Hunters $L^{\ast}$ value of ultrasonic treated breast meat was higher than control, but the leg meat were not significantly different between ultrasonic treatment and control. The $a^{\ast}$ value of leg meat was higher than breast meat, and $b^{\ast}$ value of breast meat was higher than leg meat And the $b^{\ast}$ value of ultrasonic treatment was higher than control. The glutamic acid and aspartic acid were major amino acids in chicken meat The palmitic acid $(C_{16:0})$ and oleic acid $(C_{18:1})$ by fried were decreased, and the linoleic acid $(C_{18:2})$ was increased But the fatty acid composition by ultrasonic treatment were not changed.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.278-282
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• 2004

본 연구는 오리고기의 사육일령에 따른 부위별 화학적 특성을 구명하고자 실시하였다. 오리고기의 단백질 함량은 70일령의 가슴 및 다리 육이 각각 21.13, 19.61%로 45일령보다 높게 나타났다. 지방은 45일령의 가슴 육이 1.04%이었으나 70일령에서는 1.38%로 약간 증가하는 경향을 나타내었다. 무기물에서 칼슘(Ca)의 함량은 가슴 및 다리 육에서 $142.1{\sim}161.1ppm$ 으로 큰 차이를 보이지 않았고, 사육일령에 따라서 가슴 육은 사육일령이 증가할수록 약간 증가한 것으로 나타났다. 칼륨(K)의 함량은 가슴 육에서 45일령이 1469.7ppm이고 70일령 1883.1ppm으로 약간 증가하는 것으로 나타났다. 아미노산에서 methionine은 가슴 및 다리 육에서 0.43, 0.46%로 다리 육에서 약간 많이 함유하고 있었으나, 사육 일령에서는 상호 차이가 없었다. Glutamic acid는 가슴 육보다 다리 육에서 약간 더 많이 함유하는 것으로 나타났다. 콜라겐 함량은 45일령의 가슴살에서 0.65, 70일령 0.77g/100g으로 사육일령이 증가함에 따라 많았다. 껍질을 제거한 날개 육에서는 45일령이 1.98이었고 70일령이 2.13g/100g으로 70일령이 0.15g/100g 이상 많았다. 콜레스테롤은 가슴육의 45일령이 10.45, 70일령이 11.28mg/100g으로 사육일령이 증가함에 따라 약간 증가하는 경향을 나타냈다.

• Food Science of Animal Resources
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• v.21 no.4
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• pp.307-313
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• 2001

This study was carried out to examine the physicochemical and microbiological characteristics of Korean and other countries chicken circulated in Tokyo, Japan. The breast meats of Korean, Japanese, and Chinese chickens and thigh meats of Korean, Japanese, Chinese, American, and Thai chicken were used. In the proximate analysis of breast meat, Korean chicken had the lowest crude protein and crude ash(P<0.01), but showed the highest content of moisture(P<0.001). TBA values of Japanese breast meat were higher than Korean and Chinese one. In thigh meat, crude fat of American one was significantly higher than the others(P<0.001), and had very high bacterial counts. Korean chicken thigh meats showed the lowest VBN values.

• Korean Journal of Poultry Science
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• v.43 no.2
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• pp.119-128
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• 2016

This study was conducted to compare nutritional composition and taste-related compounds of breast and thigh meats from four lines of Korean native chickens (KNC) Yeonsan Ogye, Hyunin Black, Hwangbong, and Hoengseong Yakdak. White Leghorn (WL) was used as a control. Fifteen male chickens (three chickens in each line) were grown under same condition and slaughtered at 53 weeks old. The contents of Fe and K in KNC, especially Hwangbong breast meat and thigh meat of Hyunin Black and Hoengseong Yakdak, were higher than WL. The contents of Na were lower in KNC compared with WL regardless of parts (p<0.05). Vitamin A contents were higher in thigh meat of WL and Hyunin Black, and vitamin $B_1$ contents were lower in Hoengseong Yakdak than other lines. Vitamin $B_3$ were higher in breast meat of four lines of KNC and thigh meat of Hoengseong Yakdak than WL. Total amino acid contents were higher in breast meat of KNC than WL. The level of good-tasting amino acids were significantly higher in breast meat of Hoengseong Yakdak and WL, and thigh meat of Hyunin Black and WL than other lines of chickens (p<0.05). The ratio of good-tasting amino acids to bitter tasting amino acids was higher in breast meat of Hoengseong Yakdak and thigh meat of Hyunin Black than WL. IMP contents were higher in Hyunin Black and WL than other lines of chickens. Based on these results, it can be concluded that four lines of KNC may have superior nutritional quality and taste when compared with WL.

• Korean Journal of Poultry Science
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• v.48 no.4
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• pp.239-253
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• 2021

This study investigates the metabolomic changes in breast and thigh meat from Cobb and Ross 308 chickens regarding the rearing environment. One-day-old Cobb and Ross broilers were raised for 35 days in conventional and animal welfare farms with, amongst others, different floor sizes, stock densities, and ammonia concentrations. One-dimensional ¹H nuclear magnetic resonance, orthogonal partial least squares-discriminant analysis (OPLS-DA), and pathway analyses were performed to analyze the metabolomic properties of broiler meat. For breast meat, only those from the Ross strain could be separated according to the environment in the OPLS-DA plot. Ross breast meat from animal welfare farms showed significantly higher acetate, anserine, creatine, and inosine monophosphate content than those from conventional farms (P<0.05). In contrast, for thigh meat, the Cobb strain was differentiated using OPLS-DA. The contents of five metabolites, such as glucose and lactate, were higher in thigh meat from animal welfare farms; however, nine metabolites, including seven free amino acids, were lower compared to those from conventional farms (P<0.05). Pathway analysis was performed to interpret the biological changes in chicken meat based on environmental factors. The results indicated that the animal welfare environment led to significant changes in four metabolic pathways in Ross breast meat and in 20 metabolic pathways in Cobb thigh meat (P<0.05). In conclusion, the animal welfare environment could influence the metabolomic properties of Ross breast meat and Cobb thigh meat, which may affect the sensory quality of meat.

• Monthly Korean Chicken
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• s.136
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• pp.58-61
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• 2006

UR, WTO에 의해 지난 1997년 국내 닭고기 시장이 전면 개방된 이후 매년 닭고기 수입은 급속도로 증가해왔으며, 2003년말 고병원성 조류인플루엔자가 발병되기 전까지만 해도 수입 닭고기는 국내 닭고기 시장의 약 30%를 점유하는 등 국내 닭고기 시장을 크게 위협했다. 특히 미국의 경우 자국 내에서는 인기부위인 가슴육 위주로 소비하고 비 인기부위인 다리육은 우리나라에 덤핑가격으로 수출해 국내 닭고기 시장을 더욱 혼란스럽게 했다. 반면 국내 소비자는 미국, EU 등 선진국과는 달리 닭다리를 선호하여 다리육은 부족하고 가슴육은 남아도는 구조를 가지고 있어 우리 역시 남아도는 닭 가슴육을 이들 국가에 수출해야 할 필요성이 절실하게 요구돼 왔다. 게다가 현재 협상 중인 한 · 미 FTA가 체결되어 이로 인해 미국산 닭고기 수입에 대한 관세가 철폐될 경우 국내 닭고기 시장에 미치는 영향이 적지 않은 것으로 분석됨에 따라 국내닭고기 시장에 미치는 영향을 최소화 하고, 나아가 국내 육계산업의 경쟁력 확보를 위해서는 대미 닭고기 수출의 필요성은 더욱 중요해지고 있다. 이에 필자는 지난 9월 9일부터 16일까지 8일간 미국 워싱턴 D.C 미국 농무성 식품안전검사처(FSIS) 국제업무국(OIA) 등을 방문해 한국의 가축방역 및 축산물 위생검사제도에 대해 설명하고, 대미 삼계탕 수출을 위해 담당자와 기술적 내용을 협의했다. 본고에서는 그날 협의한 내용들을 간략하게 요약하여 게재코자 한다.

• Korean Journal of Poultry Science
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• v.38 no.3
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• pp.225-230
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• 2011

Broilers were raised as the same environmental conditions with Korean native chickens (KNC) and slaughtered at the same age (13 week) to observe the physiochemical differences in breast and leg meat. The crude fat content of broilers was significantly higher than that of KNC in both breast and leg meat. pH of both breast and leg meat of broiler was lower than that of KNC. Redness of breast meat surface was higher in broiler than KNC. Except for the chewiness of raw leg meat, which was higher in KNC than broiler, the results of texture showed no difference between broilers and KNC. However, the collagen content of leg meat of KNC (6.78 mg/g) was significantly higher than that of broilers (3.12 mg/g). Results showed that broilers reared and slaughtered as the same conditions with KNC had significantly higher fat content while lower collagen content. Therefore, these physicochemical differences clearly indicate that the meat characteristics of broilers cannot be similar to KNC even if the environmental conditions and slaughter age are identical.