Effect of Electron Beam Irradiation on Volatile Organic Compounds of Vitis labrusca L.

전자선 조사한 캠벨얼리 포도(Vitis labrusca L.)의 휘발성 유기성분 변화

  • Shim, Sung-Lye (Department of Food and Nutrition, Chosun University) ;
  • No, Ki-Mi (Department of Food and Nutrition, Chosun University) ;
  • Kim, Kyong-Su (Department of Food and Nutrition, Chosun University) ;
  • Song, Gi-Dong (Department of Chemistry, Chosun University)
  • Published : 2010.02.27

Abstract

Changes in volatile organic compounds were investigated during storage after electron beam irradiation. Grapes were irradiated at 0.25, 0.5, 0.75, and 1.0 kGy and stored for 1 month at $4^{\circ}C$. Butanol, hexanal, [E]-2-hexenal, hexanol, and 3-methyl-butanol were the major volatile organic compounds of grapes. The types of volatiles in irradiated grapes were similar to those of non-irradiated samples but concentration differed among treatments. Some volatile compounds decreased during storage, whereas others, especially the esters, increased. Concentration of most volatile compounds were higher in pre-stored grapes than in post-stored fruit (thus, during the 30 days after irradiation by e-beam). Consequently, concentration of volatile organic compounds either increased or decreased after e-beam irradiation but these changes did not correlate with irradiation dose.

전자선 조사에 따른 캠벨얼리 포도의 휘발성 유기성분의 조성과 저장 후(0, 30일)의 변화를 확인하고자 본 연구를 수행하였다. 캠벨얼리 포도에 0.25, 0.5, 0.75 및 1 kGy의 선량으로 전자선 조사한 후 SDE 방법으로 휘발성 유기성분을 추출하고 GC/MS로 분석하였다. 포도와 전자선 조사된 포도의 주요 화합물로는 butanol, hexanal, [E]-2-hexenal, hexanol, 3-methyl-butanol 등이 동정되었으며 전자선 조사에 따른 전체적인 휘발성 유기성분의 조성은 변화가 없었고 정량적인 변화만 관찰되었다. $4^{\circ}C$에서 30일 동안 저장된 포도에서는 대부분의 화합물의 함량이 감소되는 것을 확인하였으나 추숙의 영향으로 일부 ester 류 및 aldehyde 류 화합물의 함량이 증가하였다. 일부 화합물의 감소와 증가는 조사선량과 관계없이 불규칙적인 양상을 나타내어 전자선 조사가 저장된 포도의 휘발성 유기성분에 크게 영향을 미치지 않는 것으로 사료되었다. 전자선 조사된 포도의 휘발성 유기성분은 1 kGy 이하 선량의 사용이 가능할 것으로 판단되나 위생화 처리 방안으로 활용되기 위해서는 다양한 실험 방법을 통한 지속적인 연구가 필요할 것으로 사료된다.

Keywords

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