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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Antioxidant Capacity of Colored Barley Extracts by Varieties

계통별 유색보리의 항산화효과

  • Published : 2005.12.01
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Abstract

This study evaluates the antioxidant capacity of 40 varieties of colored barley and hulled barley. For investigation of the antioxidant capacity as well as the contents of anthocyanin, color intensity, total phenolic acids contents, SOD-like activity, samples were extracted in ethanol with 0.1$\%$ TFA. The content of anthocyanin was measured spectrophotometrically. The total phenolic acid content was analyzed by using th Folin-Ciocalteu method, and the color intensity was determined by using the color difference meter. The results showed that in the anthocyanin content and color intensity of colored barley there were significant differences according to their varieties. The resulting concentration levels were divided into three groups: Group I (high) Group II (medium), and Group III (low). In the measurements of antioxidant capacity significant differences(P < 0.05) were found among varieties in those groups. Colored barley was higher in electrondonating capability, SOD-like activity, iuhibitory effects on lecithin oxidation, and hydrogen radical- scavenging ability Meanwhile, from different antioxidant tests, No. 26, 27, 34, and 35 varieties measured high in antioxidation ability fell into Group I high in the anthocyanin content. This results suggest that the anthocyanin content has a significant relationship on antioxidant activity.

본 연구에서는 기능성이 강화된 유색보리 계통을 선발하고 유색보리 계통 육성 및 활용에 기초자료로 사용하기 위해 유색보리 40계통과 대조군인 춘추쌀보리, 겉보리를 $0.1\%$ TFA를 용매로 사용하여 3회 반복 추출 후 감압 농축 후 anthocyanin 함량, 색도 및 항산화효과를 측정하였다. 유색보리의 anthocyanin 색소함량과 색도를 측정한 결과 계통별로 큰 차이를 보였고, 색의 짙음과 옅음으로 그룹 I ,그룹 II, 그룹 III을 나눌 수 있었다. 계통별로 항산화효과에서도 상당한 차이가 있었으나, 제놀함량이 높았던 유색보리 계통이 전자 공여능, SOD-like 활성, lecithin 산화 저해활성능, hydro-gen radical 소거능이 높음을 알 수 있었으며, 여러가지 항산화실험에서 항산화능이 높게 측정되었던 No. 25, 27, 34, 35, 38이 anthocyanin을 함량이 높은 그룹 I에 포함되어 있어 anthocyanin을 함량과 항산화효과는 정의 상관관계로 나타났다. 따라서, 다른 유색 함유 작물처럼 색깔이 진한 유색보리 품종이 개발되어 다양한 생리활성이 입증된다면 새로운 기능성 식품소재로 활용가능성이 높을 것으로 사료된다.

Keywords

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