Bun-Sung Jo

Isolation and Identification of Inhibitory Compounds on Helicobacter pylori from Rosa multiflora Thunberg Fruit Extracts

The antimicrobial activity of 70% ethanol extracts from Rosa multiflora Thunberg fruit against Helicobacter pylori was examined. The inhibitory activity of Rosa multiflora Thunberg fruit extracts against H. pylori was determined to clear a zone of 14 mm with 70% ethanol extracts. Purification of inhibitory compounds was carried on Sephadex LH-20 and cartridge column chromatography using a gradient procedure, with increasing ethanol () in . The chemical structure of the purified inhibitory compounds on H. pylori was identified to be protocatechuic acid, chlorogenic acid and quercetin by FAB-MS, NMR and IR spectrum.

Functional Properties of Walnut in Cosmetics

호두과육으로부터 용매별로 추출한 추출액중의 phenolic compound 함량은 열수, 에탄올, 메탄올, 아세톤 추출물 순서로 24.3, 34.4, 32.5, 15.1 mg/g의 함량을 나타내어 에탄올 추출물의 phenolic compound 함량이 가장 높았으며, 인체에 무해한 추출 용매인 열수 및 에탄올 농도별 추출물의 phenolic compound 비교한 결과 60% 에탄올 추출물에서 34.7 mg/g과 열수 추출물에서 24.6 mg/g 함량의 phenolic compound를 나타내었다. 호두추출물의 항산화 활성 중 전자공여능의 경우 열수추출물에서 78.1%, 60% 에탄올추출물에서 80.6%의 활성을 나타내었으며, ABTS radical cation decolorization 측정에서는 열수추출물과 60% 에탄올추출물 각각 98.1%와 98.3%의 높은 항산화 활성을 나타내었다. Antioxidant protection factor (PF)의 경우는 열수추출물과 60% 에탄올추출물에서 각각

Biological and Antimicrobial Activity of Vaccinium oldhami Fruit

1.1{\pm}0.2

Healthy Functional Food Properties of Phenolic Compounds Isolated from Ulmus pumila

PF와

Biological Activity of Extracts from Acanthopanax sessiliflorum Fruit

1.1{\pm}0.4

Biological Activity in Functional Cosmetic of Purple Sweet Potato Extracts

PF로 높지는 않았으며, TBARs inhibitory activity 측정에서는 열수추출물과 60% 에탄올추출물에서 각각 60%와 75%로 비교적 높은 항산화력을 가졌음이 확인되었다. 호두추출물의 항염증효과를 살펴본 결과 100

Biological Activity of Ethanol Extracts from Amelanchier asiatica Fruits

{\mu}g/ml

Isolation and Identification of Antimicrobial Compounds against Helicobacter pylori from Rosemary (Rosmarinus officinalis L.) Extracts

의 농도에서 50%의 NO발현이 억제되었고, western blot에 의한 iNOS 및 COX-2의 억제효과는 대조군에 비해 100

Inhibitory Activity against Helicobacter pylori of Isolated Compounds from Pinus koraiensis Siebold et Zucc Leaves

{\mu}g/ml

Beauty Food Activities of Isolated Phenolic Compounds from Ulmus pumila

의 농도에서 10% 정도의 낮은 저해 효과를 나타내었다. Tyrosinase의 저해 활성의 경우 60% 에탄올추출물에서 43%의 저해율을 보였으며, 수렴효과의 경우 60% 에탄올추출물에서 55%의 억제효과를 나타내어, 호두추출물은 미백 및 주름개선용 화장품소재로서 개발이 가능하다고 판단되었다. 본 연구는 고령친화산업 기업지원센터의 연구비 지원에 의하여 수행되었으며, 이에 감사드립니다. 【The phenolic compounds of walnut extracts by various solvents were shown to be 24.3 mg/g in hot water, 34.4 mg/g in ethanol, 32.5 mg/g in methanol and 15.1 mg/g in acetone. In a comparison of phenolic compounds from hot water and different concentrations of ethanol, which are harmless, 60% ethanol extract and hot water extract were 34.7 mg/g, 24.6 mg/g. The electron donating ability (EDA) of walnut extracts in hot water and 60% ethanol were 78.1% and 80.6%. According to ABTS radical cation decolorization for antioxidant activity, hot water and 60% ethanol extract showed high antioxidant activities of 98.1% and 98.3%. Antioxidant protection factor (PF) were