The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Quality Characteristics during Storage of Yackwa added with Ethanol Extract from Ulmus davidiana

저장기간 동안 유근피 에탄올 추출물 첨가 약과의 품질특성

  • Sim, Ki Hyeon (Dept. of Traditional Dietary Life, Graduate School of Traditional Culture and Arts, Sookmyung Women's University)
  • 심기현 (숙명여자대학교 전통문화예술대학원 전통식생활문화전공)
  • Received : 2015.05.19
  • Accepted : 2015.06.17
  • Published : 2015.06.30
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Abstract

최근 식품에 첨가하는 합성 항산화제가 생체효소의 활성을 억제하고, 암을 유발시키는 등의 안정성에 문제가 되는 것으로 보고되면서 천연 식물자원으로부터의 항산화 물질을 개발하고자 하는 연구가 활발하게 진행되고 있다. 느릅나무의 껍질인 유근피는 항산화 효과가 매우 우수한 것으로 보고되고 있어서, 천연 항산화제로 유근피 에탄올 추출물을 0, 0.05, 0.1, 0.2%로 약과에 첨가하여 합성 항산화제인 BHT와 천연 항산화제인 L-ascorbic acid를 0.02%로 첨가한 약과와 저장기간에 따른 품질특성과 지질산패 정도를 비교하였다. 유근피의 첨가량이 증가할수록 산패취와 경도는 감소하였고, 반면에 수분활성도, 팽화도, 관능평가 등은 증가하였다. 특히 유근피를 첨가함에 따라 약과의 명도가 감소한 것으로 나타났는데, 이는 약과의 메일라드 반응에 의한 갈색물질인 멜라노이딘류의 생성 때문으로 추정된다. 또한 약과의 저장 기간이 증가함에 따라서 경도, 색도, 산패취 등이 증가하였고, 반면에 수분활성도와 팽화도, 색, 맛, 조직감, 전반적인 기호도 등의 관능적 특성은 감소하였다. 유근피가 약과의 저장성에 미치는 영향을 살펴보기 위해서 산가와 과산화물가를 측정하여 실험한 결과, 유근피를 첨가한 약과는 첨가하지 않은 약과에 비해서 지질산화가 적게 일어나, 약과의 저장성을 증가시켜 주는 것으로 나타났다. 관능적인 특성을 비롯한 품질특성과 지질산패 정도를 평가한 결과, 유근피 추출물을 0.1% 첨가한 약과가 가장 좋을 것으로 평가되었다.

Keywords

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