Cooking Qualities in Gamma-Irradiated Chicken

감마선(線) 조사(照射)된 닭고기의 조리적성(調理適性)

In order to develop a sanitary and economic storage method for chicken carcass by gamma-irradiation, the samples irradiated with 5 to 10 kGy were stored at 3 to $4^{\circ}C$ for 41 days, and the changes in ordour, appearance and the cooking guality of stored samples were determined. The nonirradiated samples which stored for more than 7 days were not tested because of microbial spoilage on the chicken carcasses. However, the quality of irradiated groups of 5 to 10 kGy was similar to that of fresh chicken for about 15 days though it deteriorated slightly after 20 days, however, they were still acceptable to eat each after 27 days of storage. The overall acceptability, flavor and texture was not significantly different in the samples of nonirradiated those of irradiated immediately and those of irradiated and then stored for 15 days when they were prepared for Sam Gei Tang arid steamed chicken. The acceptibility of Sam Gei Tang prepared with chickens after 15 days of the storage, the irradiated groups of 8 and 10 kGy showed a similarity to the chickens prepared immediately after slaughter. In steamed chickens prepared with the samples stored for 15 days texture of the irradiated group was superior to that of the nonirradiated fresh chicken, and there were no statistical differences in the flavors between each group.

위생적이며 경제적인 저장법 개발을 목적으로 $5{\sim}10\;kGy$의 감마선(線)을 조사(照射)하고 $3{\sim}4^{\circ}C$에 저장된 닭고기의 냄새 및 외관변화와 조리적성(調理適性)을 검토한 결과는 다음과 같다. 냄새 및 외관변화에서 비조사군(非照射群)은 저장 7일 정도에 식용불가능하였으나, 5 kGy 이상 조사군(照射群)은 약 15일까지 거의 신선한 닭고기 품질을 유지하였으며, 21일 정도에는 신선도가 다소 못하였으나 27일까지도 식용가능하였다. 조리적성(調理適性) 검토에서 조사직후(照射直後)와 저장 15일에 삼계탕과 찜닭을 조리(調理)하였을 때 전반적 기호성과 풍미 및 조직감은 조사직후(照射直後)에 비조사군(非照射群)과 조사군(照射群)간에 유의적 차이가 없었으나, 조사후(照射後) 저장 15일 조리(調理)한 삼계탕의 경우 8 및 10 kGy 조사군(照射群)은 도살 직후의 신선한 비조사(非照射) 닭고기와 거의 동일한 기호성을 보였으며, 찜닭조리(調理)에서는 각시험구(各試驗區) 간에 풍미에는 변화를 느낄 수 없었고 조직 감에서는 조사군(照射群)이 비조사군(非照射群)보다 우수함을 나타냈다.