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In Vitro antioxidant effect of ethanol extract from Pennisetum purpureum

Napier grass (Penninsetum purpureum) 에탄올 추출물의 in vitro 항산화 효과

  • Received : 2019.03.27
  • Accepted : 2019.05.01
  • Published : 2019.06.30

Abstract

In vitro antioxidant effect of 50% ethanol extract from Napier grass (Penninsetum purpureum) was investigated. The yield and polyphenol content of the Napier grass extract were $6.3{\pm}0.35%$ and $79.6{\pm}3.65{\mu}g$ gallic acid equivalents/mg-extract, respectively. Antioxidant ability of the Napier grass extract such as fee radical and cation radical scavenging activities, reducing power, nitrite scavenging activity, and lipid peroxidation inhibitory activity proportionally increased as concentration of the extract increased. $EC_{50}$ values of the Napier grass extract for free radical scavenging, cation radical scavenging, reducing power, and nitrite scavenging were 1,930.0, 350.0, 840.0, and $1,470.0{\mu}g/mL$, respectively. In the presence of $85.0{\mu}g/mL$ of the Napier grass extract, lipid peroxidation was potently inhibited by 74.6%.

Napier grass (Penninsetum purpureum)의 50% 에탄올 추출물의 수율, 폴리페놀 함량 및 항산화 활성을 확인하였다. Napier grass 추출물의 수율은 $6.3{\pm}0.35%$이었고, 총 페놀성 화합물 함량은 $79.6{\pm}3.65{\mu}g$ gallic acid equivalents/mg-추출물로 나타났다. Napier grass 추출물의 유리라디칼과 양이온라디칼 소거능, 환원력, 아질산염 소거능 및 지질과산화 억제능은 모두 추출물의 농도에 비례하여 증가하였다. Napier grass 추출물의 DPPH 유리라디칼에 대한 $EC_{50}$값은 $1,930.0{\mu}g/mL$로 유리라디칼에 대한 소거활성이 높지 않았다. Napier grass 추출물의 ABTS 양이온라디칼 소거, 환원력 및 아질산염 소거에 대한 $EC_{50}$값은 각각 350.0, 840.0 및 $1,470.0{\mu}g/mL$로 나타나 유리라디칼 소거활성에 비해 높은 항산화 능력을 보유하고 있었다. 특히 Napier grass 추출물은 $85.0{\mu}g/mL$의 농도에서 과산화물의 생성을 74.6% 억제할 정도로 뛰어난 지질과산화 억제활성을 보여주었다.

Keywords

References

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