Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
권호 표지

Changes in Protein Extractability, Thiobarbituric Acid and Volatile Basic Nitrogen of Spent Layer Meat Treated with Sodium Chloride and Phosphates

소금과 인산염 첨가에 따른 산란노계육의 단백질 추출성, Thiobarbituric Acid 및 Volatile Basic Nitrogen의 변화

  • 박구부 (경상대학교 축산학과) ;
  • 이정일 (경상대학교 축산학과) ;
  • 신택순 (경상대학교 축산학과) ;
  • 진상근 (진주산업대학교 국제축산개발학과) ;
  • 문점동 (진주산업대학교 낙농학과)
  • Published : 1994.12.01
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Abstract

This study was conducted to investigate the effects of the addition of varied levels of NaCI and phosphates to the breast meat of spent layers(2 \pm 0.2 kg), which were stabilized for over 24 h before slaughter, on the protein extractability, thiobarbituric acid(TBA) and volatile basic nitrogen (VBN). Within 1 h after slaughter, breast meat was removed and treated with NaCI(0, 1, 2, 3%) and phosphates(0.25% and 0.5%) using a hot-salted method. The breast meat samples were stored at 4\pm$1^{\circ}C$ for 3 d. The results obtained were summarized as follows. 1. Soluble protein contents of salt-treated groups were significantly higher than that of control (P<0.05) and showed a positive relationship with the levels of salt. At a constant level of NaCI, the soluble protein content was proportionately elevated by the levels of phosphates (P<0.05). It decreased significantly in both control and salt-treated groups during storage (P<0.05). 2. TBA values of salt-treated groups were significantly higher than that of control(P<0.05) and showed a positive relationship with the levels of salt. At a constant level of NaCI, TBA values in 0.5% phosphates treatment groups were significantly lower than that in 0.25%(P<0.05). It increased significantly in both control and salt-treated groups during storage(P<0.05). 3. VBN values of salt-treated groups were significantly lower than that of control(P<0.05) They increased significantly by the salt treatment for the first day of storage(P<0.05), but not from the second day of storage. VBN values in both control and salt-treated groups were significantly increased during storage(P<0.05). After the first day of storage and at the same level of NaCI, no significant difference in VBN value was observed between the two levels of phosphates.

Keywords

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