Earticle

초록

영어

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

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

저자

• 강선문 [ Sun Moon Kang | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 성필남 [ Pil-Nam Seong | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 강근호 [ Geunho Kang | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 김진형 [ Jin-Hyoung Kim | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 장선식 [ Seonsik Jang | 농촌진흥청 국립축산과학원 한우연구소 ]
• 김영춘 [ Youngchun Kim | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 김윤석 [ Yunseok Kim | 농촌진흥청 국립축산과학원 축산생명환경부 ]
• 박범영 [ Beomyoung Park | 농촌진흥청 국립축산과학원 축산자원개발부 ]
• 조수현 [ Soohyun Cho | 농촌진흥청 국립축산과학원 축산생명환경부 ] Corresponding author

참고문헌