Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effect of Gamma Irradiation on Meat Quality in Chicken Breast during Cold Storage

감마선 처리에 따른 닭고기 가슴육의 냉장 저장 중 품질 특성

  • Published : 2008.08.30
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Abstract

The influence of gamma irradiation with low doses (0.5, 1.0, and 1.5 kGy) on the meat quality of chicken breast was determined for 6 days of storage at $4^{\circ}C$. The pH of irradiated chicken was lower than that of the control at day 1 (p<0.05), while no difference was found among irradiation at different doses. Drip loss was higher in irradiated chicken with doses of 0.5 and 1.0 kGy compared to the control at day 1 and day 3 (p<0.05). Lightness (L) at day 1 and day 6 was increased due to irradiation (p<0.05). Redness (a) increased with irradiation doses of 1.0 and 1.5 kGy at day 1 and day 3 (p<0.05). However, no significant differences were found in yellowness (b). The number of aerobic plate count of irradiated chicken during storage was significantly lower than the control (p<0.05). E. coli and coliforms were not detected after irradiation at any dose. Also, irradiation doses of 1.0 and 1.5 kGy significantly reduced volatile basic nitrogen (VBN) and 2-thiobarbituric acid reactive substances (TBARS) values compared to the control during storage (p<0.05). These results suggest that low dose gamma irradiation can be useful to extend the shelf life of chicken breast during cold storage.

닭고기 가슴육의 저장성을 증진시키기 위해 저수준의 감마선을(0.5, 1.0, 1.5kGy) 조사하여 냉장저장 중 품질변화와 미생물학적 특성을 조사하였다. pH는 저장 1일에 감마선 처리구가 대조구보다 낮은 수준을 보였고 육즙손실은 저장 1일과 3일에 0.5와 1.0 kGy 수준의 방사선 처리구에서 대조군보다 높은 수준을 나타내었다(p<0.05). 육색 중 L과 a값은 저장 1일에 1.0과 1.5 kGy 수준으로 조사 처리한 경우 증가하였으나 b값은 유의적인 차이를 보이지 않았다. 총균수는 감마선 처리구가 대조군보다 유의적으로 낮은 수준을 나타내었으며, 대장균과 대장균군은 방사선 처리구에서 모두 검출되지 않았다. 또한 단백질변성도와 지방산패도를 나타내는 VBN과 TBARS 값은 방사선 처리구에서 대조군보다 낮은 수준을 나타내었다. 결국 저수준의 방사선 처리가 닭고기 가슴육의 저장성을 증진시키기는 하지만 육즙손실 또한 증가시켜 추후 이를 감소시키기 위한 연구가 필요할 것으로 판단된다.

Keywords

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