Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Properties of Acorn Mook with Various Soaking Conditions

수침조건에 따른 도토리 묵의 품질 특성

  • Na, Hwan-Sik (Food and Drug Analysis Division, Jeollanamdo Institute of Health and Environment) ;
  • Kim, Kwan (Department of Food Science and Technology, Chonnam National University) ;
  • Oh, Geum-Soon (Korea Food and Drug Administration) ;
  • Kim, Sung-Kon (Department of Food Science and Nutrition, Dankook University)
  • 나환식 (전라남도 보건환경연구원 식품약품분석과) ;
  • 김관 (전남대학교 식품공학과) ;
  • 오금순 (식품의약품안전청) ;
  • 김성곤 (단국대학교 식품영양학과)
  • Published : 2002.04.01
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Abstract

This study was to examine the characteristics in the texture of acorn Mooks (acorn starch jelly) with different conditions to prepare acorn starch. By texture profile analysis, hardness and chewiness with 50% deformation were increased with increasing soaking days. Hardness of acorn Mook, measured by texture analyzer, showed significantly difference between the samples, and was closely related to the content of non-starchy substances and their intrinsic viscosity. The observation of microstructure through a scanning electron microscope (SEM) showed that acorn Mook showed finer and more fibrous structure than control(0-0), sample without soaking of acorn and sediments. Sensory characteristics of acorn Mook were affected by soaking treatment. The result of acceptance test on acorn Mooks indicated that the color and hardness increased with the increase of soaking days of acorn nuts and soaking times of sediments. There was a little difference between the samples in astringency taste. Their overall acceptability also increased except for 4-2 sample (i.e., soaking of acorn, 4 days; soaking of sediments, 2 times) and 4-3 sample (i.e., soaking of acorn nuts, 4 days; soaking of sediments, 3 times). As the results, the color, light brown, and the taste, a little astringency with consistency, were important factors of acorn Mook.

수침조건이 다른 도토리 앙금을 이용하여 묵을 제조한 후 텍스쳐 특성을 조사하여 다음과 같은 결과를 얻었다. $95^{\circ}C$에서 120 rpm으로 1시간 가열하여 제조한 11% 농도의 도토리 묵을 주사전자현미경으로 관찰한 미세구조는 전체적으로 다공성인 망상구조를 이루고 있었으며 수침 기간이 길어지면서 겔의 망상구조 크기가 균일해지면서 치밀한 구조를 형성하였다. 도토리 묵을 50% 변형율로 측정한 TPA 특성치는 견고성(hardness)의 경우 수침 기간이 길어질수록 증가하였으며, cohesiveness와 springiness는 대구조인 0-0 시료를 제외하고는 시료의 처리 정도에 따른 차이를 관찰할 수 없었고, chewiness는 증가하였다. 또한 adhesiveness(부착성)는 나타나지 않았다. 수침 조건이 각기 다른 묵을 색깔, 견고성, 떫은맛과 종합적 기호도에 대해 실시한 관능검사는 색깔의 경우 처리 정도가 커질수록 대조구(0-0) 시료와는 뚜렷이 구분할 수 있었으며, 견고성의 경우에도 수침을 많이 할수록 증가하였으며, 떫은 맛의 경우에는 열매만을 수침 처리한 경우에는 그 차이가 크지 않았으나 앙금을 수침하는 과정에 의해 유의적으로 차이가 있었다. 종합적 기호도에서는 전반적으로 증가하였으나 수침 처리를 가장 많이 한 4-2와 4-3의 경우에는 기호도가 조금 떨어졌다. 이상의 결과를 종합적으로 볼 때 도토리 묵은 견고성 뿐만 아니라 약간의 갈색과 적당히 떫은맛을 갖는 것이 기호도에 있어 더 나은 점수를 받았다.

Keywords

References

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