Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
권호 표지

Identification of Vegetable Oil-added Sesame Oil by a Mass Spectrometer-based Electronic Nose

Mass Spectrometer를 바탕으로 한 전자코를 이용한 식물성 유지가 혼합된 참기름의 판별 분석

  • Son, Hee-Jin (Department of Food Science and Technology, Seoul Women's University) ;
  • Hong, Eun-Jeung (Department of Food Science and Technology, Seoul Women's University) ;
  • Ko, Sanghoon (Department of Food Science and Technology, Sejong University) ;
  • Choi, Jin Young (Department of Food and Nutritional Sciences, Hanbuk University) ;
  • Noh, Bong-Soo (Department of Food Science and Technology, Seoul Women's University)
  • 손희진 (서울여자대학교 식품공학과) ;
  • 홍은정 (서울여자대학교 식품공학과) ;
  • 고상훈 (세종대학교 식품공학과) ;
  • 최진영 (한북대학교 식품영양학과) ;
  • 노봉수 (서울여자대학교 식품공학과)
  • Received : 2009.08.31
  • Accepted : 2009.11.11
  • Published : 2009.11.30
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Abstract

Sesame oils are partially mixed with other vegetable oils due to high price in a Korean market. To find out authentic sesame oil, a mass spectrometer-based electronic nose (MS-based E-nose) was used. Sesame oil (Se) was blended with soybean oil (So) or corn oil (Co) at the ratio (Se:So, Se:Co) of 97:3, 94:6, 91:9, 88:12 and 85:15, respectively. Intensities of each fragment from sesame oil by MS-based E-nose were completely different from those of soybean oil or corn oil. The obtained results were used for discriminant function analysis (DFA). Volatile organic components (VOC) of soybean oil or corn oil were similar to those of fresh air and DFA plot indicated a significant separation of pure sesame oil and pure other oil. The group of the mixed oil was seperated with that of sesame oil in DFA plot and the added amount of soybean oil to sesame oil was correlated with discriminant function first score (DF1). MS based E-nose system could be used as an efficient method to investigate the purity of sesame oil.

참기름은 높은 항산화활성 및 항암작용 등의 우수한 영양학적 가치를 지니는 반면 비싼 가격으로 인하여 가짜 참기름의 유통이 범람하여 이를 판별할 수 있는 분석 방법의 확립이 요구되는 실정이다. 따라서 본 연구에서는 질량분석기를 바탕으로 한 전자코를 이용하여 대두유가 혼합된 참기름을 제조하여 진위 판별을 시도하기위하여 각각의 유지를 전자코를 이용하여 분석, 통계처리하였다. 혼합 참기름의 휘발성 향기성분으로부터 생성되는 ion fragment 중 40-160 amu에서 각 시료 간에 차별성이 높은 fragment (m/z)를 선택하여 해당 intensity값을 판별 분석한 결과, 참기름 및 대두유는 뚜렷하게 구분되었다. 참기름 및 대두유, 옥수수유, 들기름을 각각의 순수한 상태로 향기성분 분석을 한 결과 서로 다른 위치에서 정확하게 분리됨을 알 수 있었고, 대두유와 옥수수유의 경우 타 기름과는 달리 순수한 공기 성분과 비슷한 위치에서 확인되는 것으로 휘발성향기성분의 감응도가 상대적으로 낮은 것으로 판단된다. 미량의 대두유가 혼합된 참기름은 첨가된 대두유의 농도에 비례하여 제1판별함수값(DF1)과 높은 상관관계를 나타내었다. 참향후 참기름의 위조 여부를 검증하는 방법에 하나로 활용될 수 있을 것이다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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