Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Changes in antioxidant activities and flavor patterns of Coffea arabica beans during roasting

아라비카 커피의 배전 중 항산화 및 향기패턴의 변화

  • Suh, Yeon-Soo (Department of Food and Nutrition, Gangneung-Wonju National University) ;
  • Lee, Seung-Heon (Hak-san Co., Ltd.) ;
  • Shang, Yafang (Korea Institute of Science and Technology) ;
  • Yoon, Jung-Ro (Department of Food and Nutrition, Gangneung-Wonju National University) ;
  • Lee, Won-Jong (Department of Food and Nutrition, Gangneung-Wonju National University)
  • Received : 2013.12.09
  • Accepted : 2014.04.02
  • Published : 2014.04.30
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Abstract

Brazil (Monte Alegro) and Ethiopia (Sidamo) coffee beans were roasted at three different roasting levels(light, medium, and dark), and were analyzed for color, total phenolic compound, caffeine, and chlorogenic acid contents. The total phenolic and caffeine contents remained unchanged during roasting. The chlorogenic acid levels of the Brazil and Ethiopia samples decreased with roasting. The antioxidant activities were measured using DPPH and ABTS. The radical scavenging activities of the light-roasted and dark-roasted coffee beans were similar. The flavor patterns of roasted coffee beans were analyzed using an electronic nose system based on gas chromatography. The data revealed that the flavor patterns of the roasted coffee beans could be separated via discriminant function analysis (DFA) method. The taste of the roasted coffee beans was analyzed using an electronic tongue system. The sourness and sweetness were decreased with roasting.

브라질 몬테알레그레 커피와 에티오피아 시다모 커피를 약배전, 중배전, 강배전으로 볶아 색도, 총 페놀 함량, 카페인, 클로로겐산 함량을 분석하였다. 총 페놀함량은 3.06~3.31%, 카페인 함량은 0.81~1.11%로 배전과정 중 큰 차이를 나타내지 않았다. 브라질 커피의 클로로겐산 함량은 2.15%(약배전)에서 1.32%(강배전)으로 감소하였고, 에티오피아 커피의 클로로겐산 함량은 2.27%(약배전)에서 0.49%로 감소하였다. DPPH와 ABTS 라디칼 소거능은 약배전 시료와 강배전 시료간에 큰 차이를 나타내지 않았다. GC를 기초로 한 전자코를 이용하여 배전 정도에 따른 향기패턴을 분석한 결과 향기패턴의 차이를 잘 구분할 수 있었다. 전자혀 분석기술을 이용하여 각기 달리 배전한 시료를 분석한 결과 신맛과 단맛은 배전이 진행됨에 따라 감소했다. 전자코와 전자혀 분석기술은 배전과정 중에 향기와 맛을 평가하는데 유용하게 활용될 수 있을 것이다.

Keywords

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