Charactrization of Biological Activities of Rehmannia glutinosa Extracts

The content phenolic compounds in extracts from Rehmannia glutinosa was the highest in 40% ethanol extracts as $5.1{\pm}0.2mg/g$. DPPH scavenging activity of R. glutinosa extracts was high in water extracts and 40% ethanol extracts as 85~93%, ABTS radical cation decolorization of water extracts and 40% ethanol extracts was about the same as 55~62%, antioxidant protection factor (PF) was confirmed in water extracts and 40% ethanol extracts as 1.6~1.9 PF, and TBARs of water extracts and 40% ethanol extracts were concluded to have the similar antioxidant effects. The hypertension inhibitory activity of water extracts and 40% ethanol extracts from R. glutinosa indicated the activities as 87.2% and 81.1%, anti-gout activity was determined very low in R. glutinosa extracts and antimicrobial activity against skin microorgasm was confirmed, and tyrosinase inhibitory activity was determined as 70.2% in 40% ethanol extracts, it was expected the whitening effects in 40% ethanol extracts. The elastase inhibitory activity which are related to the wrinkle cause was observed in water extracts and 40% ethanol extracts as 76.2% and 57.2%. The hyaluronidase inhibitory activity to R. glutinosa extracts was observed weakly in only 40% ethanol extracts of $200{\mu}g/ml$ phenolic content as 5.1%.

숙지황(Rehmannia glutinosa) 추출물의 생리활성

숙지황(Rehmannia glutinosa)으로부터 유용성분 추출은 40% 에탄올 추출물에서 $5.1{\pm}0.2mg/g$으로 가장 높은 phenolic compound 함량을 나타내었다. 숙지황 추출물의 항산화활성은 전자공여능의 경우 물 추출물과 40% ethanol 추출물 모두에서 85~93%의 높은 전자공여능이 확인되었으며, ABTS radical cation decolorization의 경우 물 추출물과 40% ethanol 추출물이 55~62%의 비슷한 수준의 항산화효과를 효과를 나타내었고, antioxidant protection factor (PF)는 $200{\mu}g/ml$의 농도에서 물 추출물과 40% ethanol 추출물 모두에서 1.6~1.9 PF의 높은 항산화력이 확인되었고, TBARs는 물 추출물과 40% ethanol 추출물이 비슷한 수준의 항산화효과를 효과를 나타내는 것으로 측정되었다. 숙지황 추출물의 고혈압억제효과는 물 추출물에서 87.2%, 40% ethanol 추출물에서 81.1%의 저해활성을 나타내었다. 관절염억제효과는 매우 낮게 측정 되었으며, 피부상재균에 대한 항균효과는 확인되었다. 숙지황 추출물의 tyrosinase 저해 활성은 40% ethanol 추출물에서 70%의 높은 저해효과가 확인되어 미백효과를 기대할 수 있었다. 주름 생성과 관련된 elastase 저해 효과는 물 추출물에서 76%, ethanol 추출물 57%의 높은 elastase 억제효과를 관찰할 수 있었다. 숙지황 추출물에 대한 hyaluronidase 저해활성은 40% ethanol 추출물에서만 $200{\mu}g/ml$ phenolic의 농도에서 약 5%의 매우 낮은 hyaluronidase 저해활성을 나타내었다.