Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Analysis and Antioxidant Activity of Volatile Extracts from Plants Commonly Used in Korean Foods

한국 식품재료로 상용되는 식물로부터 분리한 향기추출물의 항산화능 탐색

  • Jang, Hae-Won (Department of Food Science and Technology, Dongguk University) ;
  • Lee, Hwa-Jung (Department of Food Science and Technology, Dongguk University) ;
  • Lee, Kwang-Geun (Department of Food Science and Technology, Dongguk University)
  • Published : 2005.10.31
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Abstract

Volatile compounds of dropwort (Oenanthe javanica DC), crown daisy (Chrysanthemum coronarium L. var. spatiosum), and sesame (Sesamum indicum L.) were isolated by steam distillation under reduced pressure (DRP) and liquid-liquid continuous extraction (LLE). Aroma extracts of the plants were identified by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) and their antioxidant activities were evaluated in two different assays. The aroma extracts isolated from dropwort, crown daisy, and sesame inhibited the oxidation of hexanal by 25%, 95%, and 99%, respectively, for one month at the $500{\mu}g/mL$ level. They inhibited malonaldehyde formation from cod liver oil by 48%, 54%, and 29%, respectively, at the $500{\mu}g/mL$ level. Their antioxidant activities were comparable to those of the natural antioxidant, ${\alpha}-tocopherol$.

식물체로 한국에서의 식품 재료로 주로 사용되는 미나리, 쑥갓, 참깨가 지닌 향기 성분의 항산화능에 대하여 연구하였다. 식물체 식품재료의 향기 성분은 감압하의 증기 증류와 dichloromethane을 용매로한 액체-액체 연속 추출을 이용하여 추출하였고, 추출된 향기 성분의 정성 및 정량 분석과 이들이 지닌 항산화능에 대하여 연구하였다. 연구 결과는 미나리, 쑥갓, 참깨의 고유한 향기 성분을 가진다는 것과 이들의 향기 추출물이 Aldehyde/Carboxylic acid assay와 Lipid MA assay에서 항산화능을 가지고 있음을 보여준다. 특히, 쑥갓의 향기 추출물은 $500{\mu}g/mL$의 농도에서 두 실험결과에서 모두 50% 이상의 항산화능을 나타냈다. Aldehyde/Carboxylic acid assay에서 $100{\mu}g/mL$의 농도에서 참깨의 향기 추출물이 90%이상의 항산화 효과를 보였고, 쑥갓과 미나리의 향기추출물이 각각 63%, 12%의 항산화 효과를 나타냈다. $500{\mu}g/mL$의 농도에서 hexanal 산화 저해 효과는 참깨>쑥갓>미나리의 순으로 나타났다. 쑥갓, 참깨의 향기 추출물은 95% 이상의 항산화 효과를 보였고, 미나리의 향기 추출물은 25%로 가장 작은 항산화 효과를 보였다. 이 세 가지 식품소재의 향기성분들은 천연항산화제인 {\alpha}-tocopherol$과 비교하여도 뒤떨어지지 않았다 Lipid MA assay에서는 $100{\mu}g/mL$의 농도에서 MA형성에 대한 저해 효과는 마늘이 $20{\mu}g/mL$의 농도에서처럼 51%로 가장 높았고 미나리와 참깨가 각각 41%, 12%를 나타냈었다. $500{\mu}g/mL$의 농도에서 MA 저해 효과는 쑥갓>미나리>참깨의 순으로, 각각 54, 48, 29%를 나타냈다. 참깨는 20, $100{\mu}g/mL$의 농도에서처럼 가장 작은 효과를 보여줬고, 쑥갓은 50% 이상의 항산화 효과를 나타냈다. Aldehyde/Carboxylic acid assay에서는 참깨가 가장 높은 효과를 보여줬지만 Lipid MA asaay에서는 그에 비해 가장 낮은 효과를 나타냈다.

Keywords

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