The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Phenolic Compounds and Radical Scavenging Activity of the Korean Wheat (Triticum aestivum L.) according to Germination Times

발아시간에 따른 국산밀(Triticum aestivum L.)의 페놀성분 및 라디칼 소거활성

  • Ham, Hyeonmi (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Choi, In Duck (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Park, Hye Young (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Yoon, Soon Duck (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Oh, Se Gwan (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Wook Han (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Woo, Koan Sik (Dept. of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
  • 함현미 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 최인덕 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 박혜영 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 윤순덕 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 오세관 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김욱한 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 우관식 (농촌진흥청 국립식량과학원 중부작물부)
  • Received : 2015.07.29
  • Accepted : 2015.08.26
  • Published : 2015.10.31
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Abstract

The purpose of this study was to evaluate the phenolic compounds and radical scavenging activity of the Korean wheat (Triticum aestivum L.) according to germination times. The cultivated varieties were T. aestivum L. cv. Keumkang, Jokyung, Baekjoong, and Goso. The total polyphenol, flavonoid, and tannin contents of the ethanolic extracts of wheat were significantly increased with longer germination times. The total polyphenol contents of ungerminated Keumkang, Jokyung, Baekjoong, and Goso were 13.74, 15.05, 16.84, and 13.02 mg GAE/100 g, respectively, and the contents in germinated wheats increased with longer germination times. The total flavonoid contents of ungerminated wheats were 5.11, 6.72, 6.28, and 5.43 mg CE/100 g, and the total tannin content was 9.19, 8.86, 8.93, and 8.66 mg TAE/100 g, respectively. The total flavonoid and tannin contents were substantially increased with longer germination times. The DPPH radical scavenging activity of ungerminated Keumkang, Jokyung, Baekjoong, and Goso was 30.77, 23.88, 25.35, and 18.73 mg TE/100 g, and the activity in wheats germinated at $25^{\circ}C$ for 72 hours was 47.47, 44.17, 38.22, and 42.85 mg TE/100 g, respectively. The ABTS radical scavenging activity of ungerminated wheats was 3.42, 88.53, 88.87, and 79.97 mg TE/100 g, respectively, and the activity in germinated wheats increased with longer germination times.

본 연구에서는 국산밀 품종에 대해 발아시간에 따른 항산화 성분 및 항산화 활성을 측정하였다. 발아시간에 따른 국산밀 에탄올 추출물의 총 폴리페놀, 플라보노이드 및 탄닌 등 페놀성분의 함량은 발아시간에 따라 유의적인 차이를 보이는 것으로 나타났다. 무처리 금강밀, 조경밀, 백중밀 및 고소밀의 총 폴리페놀 함량은 13.74, 15.05, 16.84 및 13.02 mg GAE/100 g이었으며, 발아시간이 증가함에 따라 유의적으로 증가하는 경향을 보였다(p<0.05). 총 플라보노이드 함량은 각각 5.11, 6.72, 6.28 및 5.43 mg CE/100 g이었으며, 발아시간이 증가함에 따라 큰 차이를 보이지 않았으나, 유의성을 보이는 것으로 나타났다(p<0.05). 총 탄닌 함량은 각각 9.19, 8.86, 8.93 및 8.66 mg TAE/100 g이었으며, 발아시간이 증가함에 따라 큰 차이를 보이지 않았으나, 유의성을 보이는 것으로 나타났다(p<0.05). 금강밀, 조경밀, 백중밀 및 고소밀의 DPPH 라디칼 소거활성은 각각 30.77, 23.88, 25.35 및 18.73 mg TE/100 g이었으며, $25^{\circ}C$에서 72시간 발아 시료가 각각 47.47, 44.17, 38.22 및 42.85 mg TE/100 g으로 유의적으로 높은 활성을 보이는 것으로 나타났다(p<0.05). ABTS 라디칼 소거활성은 각각 83.42, 88.53, 88.87 및 79.97 mg TE/100 g이었으며, 발아시간이 증가함에 따라 유의적으로 증가하는 경향을 보였다(p<0.05). 이상의 결과 국산밀의 발아를 통하여 페놀성분 및 라디칼 소거활성이 증진된 효과를 얻을 수 있는 것을 확인할 수 있었다.

Keywords

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