• 제목/요약/키워드: Avena Sativa

검색결과 103건 처리시간 0.041초

귀리 Ethyl acetate 분획물의 예쁜 꼬마선충 내의 항산화 효과 (Antioxidant Activity of Ethyl acetate Fraction of Oat in Caenorhabditis elegans)

  • 권강무;김준형;양재헌;기별희;황인현;김대근
    • 생약학회지
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    • 제52권4호
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    • pp.251-256
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    • 2021
  • Oat, the seeds of Avena sativa L. (Gramineae), is an important dietary staple for people in many countries. Previous studies reported that A. sativa had various pharmacological effects such as anti-inflammatory, antitumor, neurotonic, and antispasmodic activities. In this study, Caenorhabditis elegans model system was used to investigate the antioxidant activity of methanol extract of oat. The ethyl acetate soluble fraction of the oat methanol extract showed the best DPPH radical scavenging activity. The ethyl acetate fraction was measured for the activity of superoxide dismutase (SOD), catalase, and oxidative stress tolerance by using C. elegans along with reactive oxygen species (ROS) level. In addition, to confirm that the regulation of the stress response gene is responsible for the increased stress tolerance of C. elegans treated by the ethyl acetate fraction, SOD-3 expression was measured using GFP-expressing transgenic worm. As a result, the ethyl acetate fraction increased SOD and catalase activities, and decreased ROS accumulation in a dose-dependent manner. In addition, the ethyl acetate fraction-treated CF1553 worm showed higher SOD-3::GFP intensity compared to the control.

Characterization and Functional Properties of an Oat Gum Extracted from a Drought Harvested Oat (Avena sativa)

  • Ramos-Chavira, Naivi;Carvajal-Millan, Elizabeth;Rascon-Chu, Agustin;Marquez-Escalante, Jorge;Santana-Rodriguez, Victor;Salmeron-Zamora, Juan
    • Food Science and Biotechnology
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    • 제18권4호
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    • pp.900-903
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    • 2009
  • An oat gum was extracted from whole seeds of a drought harvested oat (Avena sativa). Oat gum presented a ${\beta}-glucan$ content of 65%(w/w) and an intrinsic viscosity of 141 mL/g. Gelling capability of oat gum at different concentrations was investigated. Gel hardness increased from 0.08 to 0.25 N as the oat gum concentration changed from 5 to 10%(w/v). Whippability, foam stability, emulsion stability, and reduced viscosity of oat gum at different pH were also investigated. Oat gum whippability was maximum at pH 7 (146%), while the higher foam and emulsion stability values were found at pH 9 (88 and 96%, respectively). The gum reduced viscosity increased from 715 to 958 mL/g as the pH changed from 7 to 9. Oat gum shows great potential as a gel forming, thickening, and stabilizing agent.

귀리로 부터 얻은 59 KD phytochrome의 liposome과 Cibacron Blue Dye와의 결합성질 (Binding of 59 Kilodalton Phytochrome from Avena sativa to Liposomes and Cibacron Blue Dye)

  • 한태룡
    • Applied Biological Chemistry
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    • 제32권2호
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    • pp.126-131
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    • 1989
  • 암소에서 기른 귀리로부터 얻은 59 kD phytochrome의 liposome과 Cibacron Blue dye에 대한 결합성질을 규명하였다. 124 kD 및 118 kD phytochrome과는 달리 Pfr형의 59 kD phytochrome은 liposome 및 Cibacron Blue dye와 정전기적 힘으로 결합한다. 이러한 결과는 124 kD 및 118 kD phytochrome이 Pr형에서 Pfr형으로 광변환시 노출되는 소수표면이 59kD Pfr에는 존재하지 않음을 의미한다. 비교적으로 강한 소수부분이 59 kD polypeptide에 존재함이 알려져 있으므로 C-말단부위로부터 잘려져나간 55 kD tryptic domain이 l18kD 및 124kD Pfr의 소수표면 노출에 중요할 역할을 하는 것으로 믿어진다.

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