Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Studies in Quantitative Analysis of Inulin-type and Levan-type Fructan in some Korean Foods

국산 식품에서 이눌린타입과 레반타입 플럭탄 정량분석 연구

  • Jang, Eun Ho (Department of Food Science and Nutrition, Kangwon National University) ;
  • Nam, Dong Hoon (Department of Food Science and Nutrition, Kangwon National University) ;
  • Lee, Jae-Cheol (Department of Food Science and Nutrition, Kangwon National University) ;
  • Jang, Ki-Hyo (Department of Food Science and Nutrition, Kangwon National University)
  • 장은호 (강원대학교 식품영양학과) ;
  • 남동훈 (강원대학교 식품영양학과) ;
  • 이재철 (강원대학교 식품영양학과) ;
  • 장기효 (강원대학교 식품영양학과)
  • Received : 2018.03.09
  • Accepted : 2018.05.04
  • Published : 2018.05.31
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Abstract

Fructan, a fructose homopolymer, is found in various foods, including onion, garlic, chicory, Jerusalem artichoke, banana, and Cheonggukjang. This study aimed to quantitatively analyze both levan-type and insulin-type fructan using acid analysis and enzyme treatment. In order to analyze fructan contents, we applied optimized conditions to various fructan-rich foods using products from 2017. In the case of oxalic acid hydrolysis, fructose concentrations increased as oxalic acid concentration increased. Inulinase treatment was better than invertase treatment in terms of fructose liberation from fructan. We applied three different methods to fructan-rich foods, including onion, garlic, banana, and Cheonggukjang and found that fructose released from fructan-rich foods was the highest in oxalic acid hydrolysis among three different methods. Except for Cheonggukjang, inulinase treatment produced better results in terms of fructose contents than invertase treatment. From our study, estimated daily fructan intakes by Koreans were 1,172~3,402 mg from onion and garlic. In conclusion, we believe that information on fructan-rich foods may be helpful to understand their roles in the human digestive system.

플럭탄은 과당으로 이루어진 과당 중합체를 말하며 식품에서는 양파, 마늘, 치커리, 돼지감자, 바나나, 청국장 등에 존재한다. 본 연구의 목적은 레반형과 이눌린형 플럭탄의 정성분석에서 산가수분해법과 효소적 분해법을 비교하여 분석조건의 최적화이다. 또한, 선정된 분석조건에서 한국인의 섭취빈도가 높은 플럭탄 함유식품을 2017년산 제품을 대상으로 플럭탄 함량을 분석하였다. 플럭탄 표준물질을 대상으로 옥살산을 사용한 산가수분해 실험에서는 옥살산 농도에 의존적으로 분해산물인 과당의 농도가 증가하였다. 이눌린나아제(inulinase) 처리시 레반형 플럭탄은 효과적으로 과당으로 분해되었다. 인버타아제(invertase) 처리시 레반형 플럭탄은 일부 분해가 진행되었으나 반응속도가 낮았다. 한국인의 섭취빈도가 높게 나타난 양파, 마늘, 바나나, 청국장을 대상으로 세 가지 방법을 적용시 옥살산 처리 시료에서 과당 함량이 가장 높게 나타났으며 청국장을 제외한 모든 시료들에서 이눌린나아제 처리시 과당 함량이 인버타아제 처리군보다 높았다. 양파, 마늘의 섭취에서 예상되는 한국인들의 플럭탄 일일섭취량은 약 1,172~3,402 mg였다. 결론적으로, 본 연구결과는 플럭탄 함유식품의 인체내장건강에 대한 이해에 도움을 줄 것으로 기대된다.

Keywords

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