Journal of the Korean Society of Food Culture (한국식생활문화학회지)

Korean Society of Food Culture (한국식생활문화학회)
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Extraction Characteristics and Antioxidative Activity of Cassia tora L. Extracts

결명자 추출물의 추출특성 및 항산화 효과

  • Published : 2004.10.31
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Abstract

The present study was conducted to investigate extraction characteristics and antioxidative activity of Cassia tora L. extracts. Cassia tora L. was extracted by reflux extraction under different extraction conditions including solvent. The solid yield, turbidity, color value, titratable acidity, free sugar contents, electron donating ability and superoxide dismutase-like ability of Cassia tora L. extracts were determined. The highest solid yield value was obtained with water of 10 fold. No significant difference in turbidity and color value were found among the extracts prepared with various extraction solvents, 75% ethanol, 50% ethanol and water. The highest titratable acidity was obtained with 50% ethanol of Cassia tora L.. The free sugar contents of Cassia tora L. extracted with water showed the highest value. Cassia tora L. extracts with water included higher contents of free sugar compared with then of the other solvent extracts, 50% ethanol and 75% ethanol extracts. The total polyphenol compound content of Cassia tora L. extracted with 50% ethanol showed the highest value. Cassia tora L. extracts with 50% ethanol included higher contents of total polyphenol compound compared with those of the other solvent extracts, water and 75% ethanol extracts.

결명자 추출액의 추출 특성과 추출액의 항산화성을 검토하여 결명자의 추출 조건을 결정함으로써 결명자 유효성분의 식품 소재화를 위한 기초자료를 얻고자 하였다. 용매와의 비율을 결정하기 위해 8배, 10배, 12배, 14배의 water를 가하여 추출 수율을 비교한 결과 water와의 비율이 10배일 때 추출 수율이 가장 좋은 것으로 나타났다. 탁도는 water 추출액에서 가장 높았으며, 추출용매의 ethanol 공노가 증가할수록 낮아졌다. 적정산도는 추출용매의, 50% ethanol에서 가장 높았으나, 전체적으로 산도가 매우 낮았다. 유리당 함량은 fructose $0.08{\sim}0.11mg%$, glucose $0.09{\sim}0.32%$, sucrose $0.08{\sim}1.26mg%$로 나타났다. 총 폴리페놀 함량을 나타낸 것으로 50% ethanol 추출액에서 2.03%로 가장 높은 함량을 나타내었으며. 75% ethanol 추출액은 0.02%로 다른 용매에 비해 현저하게 낮은 함량을 나타내었다. 전자공여능은 50% ethanol에서 66.,39%로 나타나 다른 용매에 비해 높은 전자공여 효과를 보여 주었으며, 폴리페놀 함량과 비슷한 경향을 나타내었다. SOD 유사활성 측정 결과는, 50% ethanol 추출액에서 50.56%로 가장 높은 활성을 나타냈었으며, 총 폴리페놀 함량과 전자공여능 측정 결과와 비슷한 경향으로, 50% ethanol 추출액이 다른 두 용매 보다 우수한 것으로 나타났다.

Keywords

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