Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Identification of Irradiation -induced Volatile Marker Compounds in Irradiated Red Pepper Powder

방사선조사 고추가루로부터 휘발성 표지물질의 구명

  • 김훈 (창원대학교 식품영양학과) ;
  • 안준석 (창원대학교 식품영양학과) ;
  • 신영민 (부산지방식품의약품안전청 시험분석실) ;
  • 이영자 (부산지방식품의약품안전청 시험분석실) ;
  • 이경혜 (창원대학교 식품영양학과) ;
  • 변명우 (한국원자력연구소 방사선식품생명공학연구팀) ;
  • 차용준 (창원대학교 식품영양학과)
  • Published : 2005.02.01
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Abstract

To develop a new detection method using irradiation-induced volatile marker compounds of red pepper powder (RP), the volatile compounds of irradiated RP (0, 1, 3, 5, and 10 kGy) were analyzed by purge and trap (P&T)/solid phase microextraction (SPME)/gas chromatography/mass spectrometry (GC/MS) methods. A total of 51 and 31 compounds were detected in IRP by SPME and P&T methods, respectively. Among these, 25 compounds, which were composed of 4 hydrocarbons, 7 aldehydes, 1 ketone, 3 alcohols, 4 aromatic compounds, 2 esters and 4 miscellaneous compounds, showed irradiation dependent manner with significant positive correlation (p<0.01 or p<0.05) between irradiation dose and relative concentration. However, all compounds except 1,3-bis(1,1-dimethylethyl)benzene were not suitable as marker compounds because of their low determination coefficients ($R^2$<0.80) between irradiation dose and their concentrations, and detectablilty in nonirradiated sample. Therefore, only one compound, 1,3-bis(1,1-dimethylethyl)benzene, was tentatively identified as a volatile marker compound to detect irradiated RP.

방사선 조사된 고춧가루의 휘발성 화합물로부터 방사선 조사 표지물질의 선정에 의한 새로운 검지방법의 개발 가능성을 검토하기 위해, 각 선량별(0, 1, 3, 5, 10 kGy)로 조사된 고춧가루를 시료로 하여 SPME법 및 P&T법으로 휘발성 화합물을 추출한 후 GC/MS법으로 분석하였다. 그 결과 SPME법 및 P&T법에 의해 각각 51종과 34종의 휘발성 화합물이 검출되었다. 이 중 방사선 조사선량과 유의 적 상관성 (p<0.05 또는 p<0.01)을 가지는 총 25종의 화합물이 SPME법 및 P&T법에 선별되었으며 이는 주로 탄화수소류(4종, dodecane, tridecane, tetradecene, pentadecane), 알데히드류(7종: propanal, 2-methylpropanal, 2-propenal, hexanal, (E)-2-octenal, benzaldehyde, (E)-2-noneal), 케톤류(1종: 2,2,6-trimethyl-cyclohexanone), 알콜류(3종: 1-ponton-3-ol, hexanol, 1-octen-3-ol), 방향족화합물류(4종: toluene, ethyl benzene, o-xylene, 1,3-bis(1,1-dimethylethyl)benzene), 에스테르 화합물류(2종, methyl acetate, ethyl acetate) 및 기타 화합물(4종: p-cymene, tetramethyl-pyrazine, dimethyl disulfide, $\beta$-ocimene)로 구성되어 있었다. 하지만 방사선 조사선량과 화합물의 함량 간의 회귀분석에 의한 결정계수($R^2$) 0.80 이상을 나타내며, 방사선 조사된 시료에서만 검출되는 조건을 만족하는 화합물은 1,3-bis(1,1-dimethylethyl)benzene 1종 뿐이었으며, 1,3-bis(1,1-dimethylethyl)benzene이 SPME법 과 P&T법에 의한 고춧가루의 방사선 조사 판별을 위한 휘발성 표지물질로 선정되었다.

Keywords

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