Quality Characteristics of Retort Tteok (Korean Rice Cake) Prepared with Various Dextrinization Time

호정화시간을 달리하여 제조한 레토르트 떡의 품질 특성

  • Published : 2007.06.30

Abstract

In this study, the quality characteristics of retort Tteok (Korean rice cake) prepared with various dextrinization times were investigated during storage. The moisture content of the retort Tteok made with dextrinized rice was 43.19-43.34% at 0 day and there were no differences in the samples during storage. As dextrinization time increased, the L value of the retort Tteok decreased, and the a and b values increased. Again there were no differences in the samples during storage. In the texture profiles, the hardness, gumminess and chewiness of the retort Tteok increased with increasing dextrinization time for all the samples, except the ones that were dextrinized for 32 minutes. The adhesiveness of the retort Tteok increased with decreasing dextrinization time, and springiness and cohesiveness did not differ among the samples. Also, the quality characteristics showed no differences after 15 days of storage. In the sensory evaluation, color, smell and delicate taste were significantly different between the retort Tteok made with rice dextrinized over 16 minutes and that made with no dextrinized rice. The retort Tteok with rice dextrinized for 16 minutes showed the highest score in the softness. Storage times up to 120 days made no differences in the sensory evaluation measurements. These results indicate that a dextrinization time of 16 minutes seems to give the best quality to retort Tteok made with dextrinized rice.

실온에서의 떡 저장성을 향상시키기 위하여 호정화 시간을 달리하여 제조한 레토르트 떡의 품질특성을 연구하였다. 호정화 시간을 달리하여 제조한 레토르트 떡의 수분함량은 저장 0일에 43.19-43.34%로 시료간 차이가 적었고, 저장기간별로도 큰 차이를 보이지 않았다. 호정화 시간이 길어질수록 L값은 감소하였고, a값과 b값은 증가하였으며 저장기간 동안 큰 변화를 보이지 않았다. 물성측정에서 32분 호정화 시킨 시료를 제외하고 호정화 시간이 길수록 견고성과 검성, 씹힘성은 증가하였다. 부착성은 호정화 시간이 감소할수록 증가하였고, 탄력성과 응집성을 큰 차이가 없었다. 그리고 저장 15일 이후부터는 저장에 따른 큰 품질 변화를 보이지 않았다. 관능평가에서 색, 향, 구수한 맛의 경우 대조구와 유의적 차이를 보이는 것은 16분 이상 호정화 시킨 쌀로 제조한 떡이었고, 16분 호정화 시켜 제조한 레토르트 떡의 부드러운 정도에 대한 평가가 가장 높게 평가되었다. 120일 저장기간 동안 관능평가 점수에 유의적인 차이 없이 품질이 유지됨을 알 수 있었다. 이상의 결과들로부터 색과 향에서 좋은 점수를 받았고, 떡이 부드러우면서도 구수한 맛을 내는 레토르트 떡을 만들기 위한 호정화 시간은 16분이 가장 적절한 것으로 나타났다.

Keywords

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