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Changes in Phenolic Compounds Properties of Rubi Fructus Extract Depending on Extraction Conditions

복분자 추출조건에 따른 페놀성 화합물의 특성변화

  • Published : 2003.04.01

Abstract

Response surface methodology was used for monitoring changes in phenolic compounds properties of Rubi Fructus extract depening on extraction conditons. The three independent variables (extraction conditions) were ratio of solvent to sample content (5, 10, 15 mL/g), ethanol concentration (20, 40, 60%) and extraction time (2, 4, 6 hr). It was anticipated that each of the five dependent Y variables (responses) would be affected by the three independent variables. The dependent responses were total yield, total phenolics content, electron donating ability, antioxidant ability and nitrite-scavenging ability (pH 1.2, 3.0, 4.2, 6.0). Total yield, total phenolics content, electron donating ability and antioxidant ability were affected by ratio of solvent to sample content. Nitrite- scavenging ability at pH 1.2 and pH 6.0 was affected by ethanol concentration, while it was affected by extraction time at pH 3.0 and pH 4.2. The optimum extraction conditions for total yield were 14.16 mL/g ratio of solvent to sample content,39.08% ethanol concentration and 2.99 hr extraction time. The maximum total phenolics content of extracts were shown at 14.06 mL/g ratio of solvent to sample content, 35.51% ethanol concentration and 3.15 hr extraction time.

복분자 추출에 따른 페놀성화합물의 특성변화를 조사하기 위하여 반응표면분석법으로 시료에 대한 용매비(5, 10, 15 mL/g), 에탄을 농도(20, 40, 60%) 및 추출시간(2, 4, 6 hr)을 달리하여 가용성 고형분 함량, 총 페놀성 화합물 함량, 전자 공여능, 항산화능 및 아질산염소거능의 변화를 모니터링 하였다. 가용성 고형분 함량, 총 페놀성 화합물 함량, 전자공여능 및 항산화능은 시료에 대한 용매비의 영향을 많이 받는 것으로 나타났다. 아질산염 소거능의 경우 pH 1.2 및 6.0에서는 에탄을 농도의 영향을 많이 받았으며, pH 3.0및 4.2에서는 추출시 간의 영 향을 많이 받는 것으로 나타났다. 가용성 고형분 함량에 있어서 최적 추출조건은 시료에 대한 용매비 14.16mL/g, 에탄을 농도 39.08% 및 추출시간 2.99 hr으로 나타났으며, 총페놀성 화합물 함량의 경우 시료에 대한 용매비 14.06mL/g, 에탄을 농도 35.51% 및 추출시간 3.15 hr으로 나타났다

Keywords

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