아미노산 및 비타민 C 급여에 따른 한우 우둔육의 품질특성

다국어 초록 (Multilingual Abstract)

The objective of this study was to investigate the effect of amino acid and vitamin C supplementation on the quality attributes of top round (TR) muscle from Korean cattle (Hanwoo). Sixteen-month-old steers were divided into three different feeding groups and raised until they were 28 months old. A control group (9 heads) was fed a basal diet and rice straw, whereas two experimental groups (8 heads/group) were fed a basal diet and rice straw supplemented with rumen-protected amino acids (≥16.0% L-lysine monohydrochloride, ≥8.0% DL-methionine) and vitamin C at a dose of 100 g/head/day (AA+VC group) or only vitamin C at 100 g/head/day (VC group). After slaughter, TR muscle (M. semimembranosus) was collected from carcasses and used to measure the quality attributes. Crude fat content was significantly higher (p<0.05) in the AA+VC group than in the VC group. No significant difference was observed for water-holding capacity and shear force value between the control, AA+VC, and VC groups. Contents of the free amino acids (FAAs) glycine, aspartate, and glutamate were significantly higher (p<0.05) in the VC group than in the control group. Sensory evaluation of tenderness and flavor preference revealed significantly higher scores (p<0.05) in the AA+VC group than in the control group. These findings suggest that vitamin C supplementation increases the contents of some FAAs, and the combined supplementation of amino acids and vitamin C improves the marbling and sensory attributes of TR muscle in Hanwoo.

목차 (Table of Contents)

• ABSTRACT
• Ⅰ. 서론
• Ⅱ. 재료 및 방법
• 1. 시험동물 및 공시재료
• 2. 일반성분 함량 측정
• 3. 표면육색 측정
• 4. 보수력 측정
• 5. 가열감량 측정
• 6. 전단력 측정
• 7. 유리아미노산 함량 측정
• 8. 관능검사
• 9. 통계분석
• Ⅲ. 결과 및 고찰
• 1. 일반성분 함량
• 2. 표면육색
• 3. 보수력, 가열감량 및 전단력
• 4. 유리아미노산 함량
• 5. 관능적 기호도
• Ⅳ. 요약
• 사사
• Ⅴ. REFERENCES

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