Effects of Citrus Byproduct Diet on Meat Color, Rancidity and Freshness in Korean Native Chickens during Cold Storage

감귤 부산물 급여가 냉장 중 토종 닭고기의 표면 색도, 지방산패도 및 선도에 미치는 영향

  • Moon, Yoon-Hee (Dept. of Food Science and Biotechnology, Kyungsung University)
  • 문윤희 (경성대학교 식품생명공학과)
  • Received : 2009.04.27
  • Accepted : 2009.08.06
  • Published : 2009.08.31

Abstract

The effects of feeding citrus byproducts on the quality of Korean native chickens were investigated during cold storage. Two samples of Korean native chickens (39 weeks old, $1.30{\pm}0.5$ kg) were used for the study: T0 (chickens not fed citrus byproducts) and T1(chickens fed a 4% citrus byproduct diets since from age 17 weeks until 39 weeks old). The breast and thigh meat of each sample were vacuum-packed, and then used for experiments on change in Hunter's color values, acid values (AV), peroxide values (POV), thiobarbituric acid (TBA) values, electron donating ability (EDA), volatile basic nitrogen (VBN) and total plate count during storage for two weeks at 3C. Changes in $L^*$, $a^*$ and $b^*$ values were slower in T1 than in T0. T1 showed slower increment rates for AV, POV, and TBA values during storage, as well as better antioxidant activity, than T0. T1 showed slower increment rates for VBN and total plate counts during storage than T0. Thus, feeding citrus byproducts suppressed change in Hunter's color value, rancidity, and freshness in breast and thigh meat during storage, and resulted in higher EDA value (p<0.05), which implies that the diet has positive effects in maintaining high meat quality.

감귤 부산물 급여가 냉장 중 토종닭고기의 품질에 미치는 영향을 검토하였다. 실험에 이용한 토종닭고기(39주령, $1.30{\pm}0.5$ kg)는 감귤 부산물을 급여하지 않은 T0구, 17주령부터 39주령까지 감귤 부산물을 4% 급여한 T1구로 나누었다. 각각 가슴살과 다리살을 진공포장하고 $3^{\circ}C$에서 2주일간 냉장하면서 표면 색도, 지방산패도, 항산화력 및 선도 변화에 대하여 실험하였다. 감귤 부산물 급여구(T1구)는 T0구보다 냉장 중 표면 색도의 $L^*$ 값, $a^*$ 값, $b^*$ 값의 변화가 느리게 나타났다. T1구는 T0구보다 냉장 중 산가, 과산화물가, TBA 값의 상승 속도가 늦었으며 항산화력이 우수하였다. T1구는 T0구보다 냉장 중 휘발성 염기질소 함량 및 일반 세균수의 증가 현상이 느리게 나타났다. 결론적으로 감귤 부산물 급여에 의하여 냉장 중 토종닭고기의 표면 색도, 지방산패도, 선도의 변화가 억제되고 전자공여능 값이 높게 나타나서(p<0.05) 품질 유지에 좋은 효과가 있는 것을 확인할 수 있었다.

Keywords

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