한국식품저장유통학회지 (Food Science and Preservation)

  • 제18권1호
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  • Pages.59-64
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  • 2011
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  • 3022-5477(pISSN)
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  • 3022-5485(eISSN)
한국식품저장유통학회 (The Korean Society of Food Preservation)
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추출용매별 canola meal의 항산화 활성

Antioxidant Activities of Various Solvent Extracts from Canola Meal

  • Jun, Hyun-Il (Department of Food Science and Technology, Chonbuk National University) ;
  • Wiesenborn, Dennis P. (Department of Agricultural and Biosystems Engineering, North Dakota State University) ;
  • Kim, Young-Soo (Department of Food Science and Technology, Chonbuk National University)
  • 투고 : 2010.09.16
  • 심사 : 2011.01.07
  • 발행 : 2011.02.28
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초록

본 연구에서는 용매별(methanol, ethanol, acetone 및 water)로 추출한 canola meal의 항산화 활성을 조사하였다. 모든 canola meal 용매 추출물들은 첨가 농도가 증가할수록 항산화 활성이 점진적으로 증가하였다. 추출물 중에서 methanol 추출물이 가장 낮은 $EC_{50}$ (DPPH radical scavenging ability; 0.9 mg/mL, ABTS radical scavenging ability; 3.5 mg/mL, reducing power; 1.3 mg/mL and chelating ability; 8.5 mg/mL)과 가장 많은 항산화 물질 (total phenolics; $63.3\;{\mu}g$/mg, total flavonoids; $21.3\;{\mu}g$/mg)을 함유하는 것으로 나타났다. 보다 정확한 canola meal의 항산화 활성을 조사하기 위하여 항산화 활성이 높은 methanol 추출물을 sephadex LH-20 column을 이용하여 순차적으로 MF 1, MF 2 및 MF 3의 3개의 분획물을 얻었으며, 동일한 농도(1.5 mg/mL)에서 측정한 항산화 활성에서 DPPH radical scavenging ability는 MF 2(75.56%)에서, ABTS radical scavenging ability와 reducing power는 MF 3(31.17% and 1.60)에서, chelating ability는 MF 1(77.72%)에서 가장 높게 나타났다.

This study was performed to investigate antioxidant activity of various solvent extracts (methanol, ethanol, acetone and water) from canola meal. As the concentration of all extracts increased, antioxidant activities increased gradually. Among solvent extracts from canola meal, methanol extract showed the highest antioxidant activities with $EC_{50}$ values of 0.9, 3.5, 1.3, and 8.5 mg/mL for DPPH radical scavenging ability, ABTS radical scavenging ability, reducing power, and chelating ability, respectively, and it had the highest total phenolics and total flavonoids contents. Furthermore, methanol extract was fractionated into three fractions (MF 1, MF 2, and MF 3) using Sephadex LH-20 column. The highest antioxidant activity was found on MF 2 for DPPH radical scavenging ability, on MF 3 for ABTS radical scavenging ability and reducing power, and on MF 1 for chelating ability at the same concentration of 1.5 mg/mL. The results indicated that each fraction containing various antioxidant materials seemed to have different influence at each antioxidant activity.

키워드

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