[논문]도정 유무에 따른 제주산 보리의 항산화 활성 비교

강유리; 김현정

doi:10.9721/kjfst.2021.53.3.252

도정 유무에 따른 제주산 보리의 항산화 활성 비교
Comparison of antioxidant activities of pearled and wholegrain barley harvested in Jeju 원문보기

한국식품과학회지 = Korean journal of food science and technology, v.53 no.3, 2021년, pp.252 - 259

강유리 (제주대학교 식품생명공학과) , 김현정 (제주대학교 식품생명공학과)

초록
AI-Helper

본 연구에서는 제주산 쌀보리인 일반보리, 청보리, 흑보리를 이용하여 도정 유무에 따른 항산화 성분과 활성을 비교하였다. 제주산 쌀보리의 항산화 성분인 총 폴리페놀 함량은 도정하지 않은 쌀보리에서 139.99-149.90 ㎍ GAE/g, 도정한 쌀보리는 91.14-125.45 ㎍ GAE/g 범위로 나타나 도정하지 않은 쌀보리에서 보다 높은 총 폴리페놀 함량을 보였다. 또한 총 플라보노이드 함량도 도정하지 않은 쌀보리(0.89-1.01 ㎍ QE/g)가 도정한 쌀보리(0.50-0.54 ㎍ QE/g)보다 높은 함량을 나타내었다. HPLC로 분석한 제주산 쌀보리의 페놀성 화합물로 gallic, protocatechuic, vanillic, p-coumaric 및 ferulic acid가 주로 검출되었으며, 도정하지 않은 흑보리와 도정한 일반보리에서는 p-coumaric acid는 검출되지 않았다. Tocopherols 및 tocotrienols 분석 결과에서는 8가지 이성체 중 α-T3 함량이 높았고, 도정하지 않은 쌀보리의 α-T3는 20.68-33.09 ㎍/g으로 도정한 쌀보리 8.93-14.98 ㎍/g보다 유의적으로 높게 검출되었다. 제주산 쌀보리의 in vitro 항산화 활성 결과에서 금속 이온 제거능을 제외하고 도정하지 않은 쌀보리가 높은 항산화 활성을 나타내었고, 항산화 활성 중 SOD 소거 활성이 높게 나타내었다. In vitro 항산화 활성은 총 폴리페놀 및 총 플라보노이드 함량에 비해 총 tocopherols 및 tocotrienols 함량에 더 높은 상관관계를 보였다. 따라서 도정하지 않은 제주산 쌀보리에서 높은 항산화 성분 및 활성이 나타나 이를 천연 항산화제로 활용 가능할 것이라 생각된다.

Abstract ▼ AI-Helper

Barley contains health-beneficial compounds, such as phenolic acids, flavonoids, lignans, and tocopherols. The antioxidant activities of pearled and wholegrain hull-less, premature, and black barley harvested in Jeju were investigated by measuring total phenolic content (TPC), total flavonoid content (TFC), phenolic compounds, tocopherols (T), and tocotrienols (T3), along with their in vitro antioxidant activities. Consequently, TPC and TFC in wholegrain barley groups were higher than those in pearled barley. Gallic acid (1.55-2.98 ㎍/g) and protocatechuic acid (0.67-2.84 ㎍/g) were the predominant phenolic compounds in barley. Total T and T3 concentrations of wholegrain barley groups were significantly higher than those of pearled barley (p<0.05). Except for the metal chelating effect and reducing power, the in vitro antioxidant activities of wholegrain barley were significantly higher than those of pearled barley. These results indicate that wholegrain Jeju barley can be used as a natural antioxidant source in the food industry.

주제어

표/그림 (6)

표 Table 1. Total phenolic content and total flavonoid content of wholegrain and pearled Jeju barley ethanol extracts
표 Table 2. Phenolic compounds (µg/g) of wholegrain and pearled Jeju barely ethanol extracts
표 Table 3. Tocopherols and tocotrienols of wholegrain and pearled Jeju barely ethanol extracts
표 Table 4. In vitro antioxidant activities of wholegrain and pearled Jeju barley ethanol extracts
표 Table 5. Pearson correlation coefficient of total phenolic content, total flavonoid content, and in vitro antioxidant activities
표 Table 6. Pearson correlation coefficient of tocopherols and tocotrienols concentrations and in vitro antioxidant activities

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