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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Comparison of Antioxidant Components and Antioxidant Activities of Colored Rice Varieties (Oryza sativa L.) Cultivated in Southern Plain

남부 평야지에서 생산된 유색미 품종별 항산화 성분 및 활성 비교

  • 박지영 (농촌진흥청 국립식량과학원 수확후이용과) ;
  • 함현미 (농촌진흥청 국립식량과학원 수확후이용과) ;
  • 한상익 (농촌진흥청 국립식량과학원 논이용작물과) ;
  • 오성환 (농촌진흥청 국립식량과학원 논이용작물과) ;
  • 송유천 (농촌진흥청 국립식량과학원 논이용작물과) ;
  • 조준현 (농촌진흥청 국립식량과학원 논이용작물과) ;
  • 허연재 (농촌진흥청 국립식량과학원 논이용작물과) ;
  • 이유영 (농촌진흥청 국립식량과학원 수확후이용과) ;
  • 이병원 (농촌진흥청 국립식량과학원 수확후이용과) ;
  • 최용환 (농촌진흥청 국립식량과학원 수확후이용과)
  • Received : 2016.04.20
  • Accepted : 2016.05.26
  • Published : 2016.08.31
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Abstract

This study compared antioxidant compounds and antioxidant activities according to various varieties of 18 colored rice. Selected rice cultivars for this study were as follows: black rice (12 cultivars)-Heugjinjubyeo, Nunkeunheugchal, Joeunheugmi, Josaengheugchal, Heuggwang, Heugseol, Shinmyeongheugchal, Shinongheugchal, Shintoheugmi, Cheongpungheukchal, Heughyang, Boseogheugchal, red rice (four cultivars)-Jeogjinju, Jeogjinjuchal, Hongjinju, Geonganghongmi, and green rice (two cultivars)-Nogwonchal and Jungmo1020. These were transplanted on June 30th and cultivated from the Department of Southern Area Crop Science, National Institute of Crop Science in Miryang, Korea. Total polyphenol (TP) content of black rice cultivars was higher than that of red rice varieties. Heugjinjubyeo exhibited the highest TP, which was $9.55{\pm}0.05mg$ gallic acid equivalent/g sample. There were no significant differences between black rice cultivars and red rice cultivars in terms of total flavonoid (TF) level. Heugjinjubyeo and Hongjinju showed the higher TF content than any other variety. Shintoheugmi revealed the highest anthocyanin content ($194.26{\pm}0.65mg/100g$). Methanol extract of Heugjinjubyeo had the highest antioxidant activities. 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and 2,2-diphenyl-1-picrylhydrazyl radical scavenging activities of Heugjinjubyeo extract were $14.70{\pm}0.62$ and $30.68{\pm}2.22{\mu}g/mL$, respectively. There were significant correlations between antioxidant compound content and antioxidant activities.

남부 평야지에서 생산된 유색미의 품종별 항산화 성분으로 총폴리페놀, 총플라보노이드 및 안토시아닌을 분석하고 항산화 활성을 측정한 결과를 비교하였다. 총폴리페놀 함량은 흑미> 적미> 녹미 순이었고, 흑미 중에서도 흑진주, 조은흑미, 신토흑미 등이 높았다. 총플라보노이드 함량은 유색미 종류에 따른 차이보다는 품종별로 차이가 있었다. 흑진주와 홍진주, 건강홍미 등이 높은 결과를 나타내었다. 안토시아닌 함량은 적미와 녹미에서는 나타나지 않았고, 흑미에서는 신토흑미, 흑진주, 청풍흑찰 순으로 높은 결과를 보였다. ABTS 라디칼 소거능은 흑진주의 $IC_{50}$ 값이 낮아 항산화 활성이 높았고, 신토흑미, 신농흑찰, 홍진주, 적진주, 조생흑찰 등이 높았다. DPPH 라디칼 소거능에서는 흑진주의 $IC_{50}$ 값이 가장 낮았고, 건강홍미, 신토흑미가 다음으로 낮은 $IC_{50}$ 값을 보여 항산화 활성이 높았다. 총폴리페놀, 총플라보노이드, 안토시아닌 함량이 높은 흑미인 흑진주는 가장 높은 항산화 활성을 나타내었다. 총폴리페놀과 총플라보노이드 함량이 낮은 녹미는 흑미와 적미에 비해 유의하게 항산화 활성이 낮게 나타났다. 본 연구에서 분석한 총폴리페놀, 총플라보노이드, 안토시아닌과 ABTS DPPH 라디칼 소거능에서 측정한 $IC_{50}$ 값과는 높은 부의 상관관계를 보이므로 항산화 성분과 항산화 활성은 상관관계가 높았다.

Keywords

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