• 제목/요약/키워드: ethanol fraction

검색결과 872건 처리시간 0.032초

오리나무 수피엑스의 위염 및 위궤양에 대한 효과 (The Effect of Alnus japonica Cortex Extract on Gastric Lesion and Ulcer of Rats)

  • 정춘식;우병희;이은방;정기화
    • Biomolecules & Therapeutics
    • /
    • 제4권1호
    • /
    • pp.84-88
    • /
    • 1996
  • Alnus japonica cortex has been used as antidiarrhea, antihemorrhage and the remedy of indigestion. This study was performed to investigate the effectiveness of the methanol extracts of the Alnus japonica cortex on the gastric lesion and ulcer. The methanol extract was fractionated with hexane, chloroform and butanol, followed by bioassay on antigastritic and antiulcer activity. The methanol extract showed low acute toxicity with minimum lethal dose of more than 5000 mg/kg, p.o. in mice. The chloroform and the butanol fraction reduced gastric lesion in HCI. ethanol induced gastritic model. On gastric secretion in pylorus ligated rat, the hexane and chloroform fraction decreased the volume and acidity. The butanol fraction had significant inhibitory effects on aspirin and Shay's ulcer. The butanol fraction showed a tendency to inhibit the decrease of mucin secretion due to ingestion of absolute ethanol.

  • PDF

쑥 추출물의 Tyrosinase 효소활성에 미치는 억제효과 (Inhibitory Effect of Mugwort Extracts on Tyrosinase Activity)

  • 곽정훈;서운교;한영환
    • KSBB Journal
    • /
    • 제16권2호
    • /
    • pp.220-223
    • /
    • 2001
  • Melanin 생합성에 관련된 tyrosinase 저해활성올 생 쑥과 건조 쑥 용매 추출물로부터 검색하였다. 쑥은 ethanol, hexane, chloroform, ethyl acetate 용매 및 열수 추출을 하였고, 생 쑥의 ethanol 추출물의 ethyl acetate 분획과 건조 쑥의 ethan야 추출물의 hexane 분획에서 회수올은 각각 15.2%와 15.5%로 가장 높았다. 각 용매 추출물의 tyrosinase 활성 저해율은 건조 쑥 추출불보다 생 쑥 추출울이 더 높았고, 생 쑥의 ethanol 추출물의 chloroform 분획과 hexane 분획에서 각각 98.9%와 9 96.7%로 큰 저해활성을 가졌다.

  • PDF

강원도산 참당귀와 일본산 일당귀의 생리 활성 성분 탐색

  • 함문선;김성수;홍종수;이진하;정을권;박영식;이현용
    • 한국미생물·생명공학회지
    • /
    • 제24권5호
    • /
    • pp.624-629
    • /
    • 1996
  • The ethanol extracts from Angelica gigas Nakai and Angelica acutiloba Kitagawa were fractionated to diethyl ether and aqueous partitions. Both partitions had strong antimutagenic effect on the MNNG (N-methyl-N-nitro-N-nitrosoguanidine) by Ames mutagenicity test. Diethyl ether fractions exhibited the greatest antimutagenic effect suppressing the mutagenicity of MNNG with inhibition of 78-80%. The ethanol extracts from both species showed the inhibitory effect on the growth of several human cancer cell lines. Especially, the diethyl ether fraction from ethanol extracts was most effective on human hepatocellular carcinoma cells, inhibiting 90-95% of cell growth. However, the aqueous fractions had least inhibition activity on many cancer cells. There was little cytotoxicity on human normal liver cell by ethanol extracts. Diethyl ether fraction from Angelica gigas Nakai ethanol extract had cytotoxicity less than 20% on human normal liver cells, compared with that from Angelica acutiloba Kitagawa ethanol exract. The adding of 0.5 (g/l) of diethyl ether fractions of Angelica gigas Nakai or Angelica acutiloba Kitagawa increased immune activity by enhacing human B and T cells up to three to four times. It was proven that diethyl ether fraction (0.7 g/1) from Angelica gigas Nakai could control blood pressure by suppressing angiotensin converting enzyme activity up to 98%. From TLC, it was appeared that both of diethyl ether partitions had umbelliferon, known to one of active substances from Angelica gigas Nakai and Angelica acutiloba Kitagawa.

  • PDF

Effect of various fractions of Bacopa monnieri Linn. aerial parts on ethanol-induced hepatotoxicity in rats

  • Ghosh, Tirtha;Maity, Tapan Kumar;Dash, Deepak Kumar;Bose, Anindya
    • Advances in Traditional Medicine
    • /
    • 제7권3호
    • /
    • pp.297-303
    • /
    • 2007
  • The ethyl acetate fraction (EAF) and n-butanol fraction (NBF) of ethanolic extract of Bacopa monnieri aerial parts were screened for hepatoprotective activity and in vivo antioxidant activity on ethanol-induced hepatotoxic rats. Ethyl acetate fraction was found to be more potent even though both the fractions were endowed with significant hepatoprotective activity. EAF and NBF were investigated for hepatoprotective activity in albino rats at 300 mg/kg, p.o. dose and compared with standard drug Silymarin (25 mg/kg, p.o.). Results show that both the fractions were effective in blunting ethanol-induced enhanced activities of serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, alkaline phosphatase, level of serum bilirubin (both total and direct), liver weight loss and was also effective in reducing ethanol-induced lipid peroxidation both in vitro and in vivo. Furthermore, the fractions could also enhance ethanol-induced suppressed activities of superoxide dismutase, catalase and decreased level of reduced glutathione. Results of hepatocellular damage caused by ethanol and its recovery by EAF and NBF, suggest that they might be considered as a potential source of natural hepatoprotective agents, which could be related to the free radical scavenging properties of saponins present in high concentration in the fractions.

염산-에탄올에 의해 유발된 흰쥐 위염에 대한 마치현의 억제 작용 (The Inhibitory Effects of Portulaca oleracea L. on HCl-ethanol Induced Gastritis in Rats)

  • 김재현
    • 대한본초학회지
    • /
    • 제24권1호
    • /
    • pp.41-47
    • /
    • 2009
  • Objectives : The objective of this study was to examine the effects of P. oleracea into the HCl-ethanol induced gastritis in rats, and to isolate and determine the chemical compounds from P. oleracea. Methods : The rats were orally administered with crude extract or fractions or isolated compounds of P. oleracea 30 mins before the induction of gastric lesion by oral administration of HCl-ethanol. The gastric lesional area was measured using pixel counting software. Then the chemical compounds from P. oleracea was isolated and determined by LC-MS and NMR. Results : The inhibition effect of oral administration of crude extract of P. oleracea at a dose of 500 mg/kg in HCl-ethanol induced gastritis was similar to cimetidine. Then, aqueous fraction at a dose of 240 mg/kg exhibited the effects similar to cimetidine. Then, the aqueous fraction was further separated by MPLC and yielded four sub fractions. Among those sub fractions, agent II at a dose of 40 mg/kg possessed the strongest effect in the HCl-ethanol induced gastritis. The water fraction yielded-Uridine, Adenosine, Guanosine, which were characterized by Mass, 1H-NMR, 13C-NMR. Conclusions : This study suggest that a P. oleracea and its compounds showed potent efficacy on the development of HCl-ethanol induced gastritis. Thus, P. olaracea can be a potential natural resource for the management of gastritis although the mechanism of action involved in the treatment remains to be explored.

Porphyran의 신속한 정제 방법 및 화학적 특성 (A Simple Purification Method and Chemical Properties of Potphyran from Porphyra yezoensis)

  • 박진희;구재근
    • 한국수산과학회지
    • /
    • 제41권6호
    • /
    • pp.409-413
    • /
    • 2008
  • A simple method for the purification of porphyran from laver Porphyra yezoensis was developed to obtain information for the development of food materials with biological functionality. Crude porphyran (CP) was extracted from dried laver in boiling water for 3 h, and then fractionated using cetylpyridinium chloride into an acidic fraction (CP-F1) and a neutral fraction (CP-F2). CP-F1 was fractionated further by fractional ethanol precipitation. Fraction CP-F1-70, precipitated at an ethanol concentration of 61-70% was the major fraction containing 68.1% of the yield from the initial fraction CP-F1. The CP-F1-70 fraction displayed a single band on Sepharose CL-4B with a molecular mass of 550 kDa, indicating a homogeneous polysaccharide. The molar ratio of galactose, 3,6-anhydro-L-galactose, 6-0-methyl-D-galactose and ester sulfate of CP-F1-70 was 1:0.32:0.07:0.53. This method is very useful for rapid and large-scale preparation of purified porphyran because it is compatible with mass production.

용매에 따른 Rooibos Tea(Aspalathus lineais) 추출물의 항산화 효과 (Antioxidative Activity of Rooibos Tea(Aspalathus linearis) Extracts)

  • 이초롱;이정희;박상현;이기택
    • 한국식품저장유통학회지
    • /
    • 제15권4호
    • /
    • pp.582-586
    • /
    • 2008
  • 남아프리카의 고산지대에서 자란 루이보스를 발효하여 가공한 루이보스 차는 항산화 효과를 가진 폴리페놀성 물질을 함유하고 있다고 알려져 있다. 본 연구에서는 루이보스 차 추출물 내의 폴리페놀성 물질의 존재여부와 함량 및 항산화 효과를 나타낸다고 알려진 vanillic acid, caffeic acid, syringic acid, 4-coumaric acid, ferulic acid의 동정 및 정량, 그리고 자유라디칼 소거능력을 통한 항산화 실험과 어유를 이용한 유도기간 측정 실험을 수행하였다. 루이보스 차 250 g을 세 가지 용매(hexane, ethyl acetate, ethanol)로 분획, 농축하여 각각 hexane 추출물 1.14 g/250 g tea, ethyl acetate 추출물 0.95 g/250 g tea, 그리고 ethanol 추출물 3.79 g/250 g tea의 수율로 분획용매별 추출물을 얻었다. 각 분획 용매별 추출물 100 g 안에 들어있는 총 페놀의 함량은 hexane 추출물이 가장 적은 양을 보였고 ethanol 추출물은 13458.8 mg/100 g extract, 그리고 ethyl acetate 추출물은 18604.4 mg/100 g extract 으로 많은 양을 보였다. 이 중 높은 총 페놀 함량을 나타낸 ethyl acetate 추출물과 ethanol 추출물에 대하여 폴리페놀성 물질 중 항산화 효과를 나타낸다고 보고된 바 있는 vanillic acid, caffeic acid, syringic acid, 4-coumaric acid, ferulic acid를 RP-HPLC를 이용하여 동정한 후, 정량하였다. 그 결과, 각 추출물 100 g 내의 항산화물질의 총 양은 ethyl acetate 추출물에 3156.1 mg/100 g extract, ethanol 추출물에 3452.6 mg/100 g extract 가 존재하여 ethanol 추출물에서 좀 더 많은 양을 보였다. 루이보스 차 추출물의 항산화 효과를 측정하기 위한 지표로 DPPH 라디칼 소거능력을 측정하였다. Hexane, ethyl acetate, ethanol 세 추출물의 RSC(%)를 측정한 결과, 추출물의 농도가 0.5와 1 mg/mL 일 때 각각 9.5, 66.1, 60.4% 그리고 18.3, 78.9, 82.2%를 보여 ethyl acetate와 ethanol추출물이 hexane 추출물에 비해 높은 자유 라디칼 소거능력을 나타내었으며, 높은 항산화 효과를 보임을 알 수 있었다. 따라서 루이보스 차의 총 페놀 함량이 증가됨에 따라 항산화 효과를 보이는 vanillic acid, caffeic acid, syringic acid, 4-coumaric acid, ferulic acid도 많은 양이 존재하였고, DPPH 라디칼 소거능력도 증가되어 루이보스 차의 폴리페놀성 물질은 항산화 효과와의 상관관계가 높은 것으로 나타났다. 또한 어유에 대한 각 분획 추출물의 유도기간 지연정도에 대하여 살펴본 결과, ethanol 추출물이 control에 비해 증가된 1.19 hr의 유도기간을 보여 산화 지연 효과를 나타내었다.

야관문 에탄올 추출물의 항산화 및 Metalloproteinase 저해 활성 (Antioxidant and Metalloproteinase Inhibitory Activities of Ethanol Extracts from Lespedeza cuneata G. Don)

  • 신용하;송창길
    • 한국환경농학회지
    • /
    • 제36권4호
    • /
    • pp.263-268
    • /
    • 2017
  • 야관문의 항산화 활성과 항주름 활성을 조사하기 위하여 30% 에탄올 추출물과 각종 용매 분획물을 이용하여 DPPH 및 ABTS radical 소거활성과 matrix metalloproteinase MMP1과 MMP3 생성억제 효과를 조사하였다. 에탄올 추출물과 각종 용매 분획물 중 에틸아세테이트 분획물에서 페놀 및 플라보노이드 함량이 가장 높았다. 야관문 추출물의 항산화 활성과 피부 주름을 유발하는 MMP1, MMP3의 생성을 억제 효과는 페놀 및 플라보노이드 함량과 높은 상관관계를 보였으며, 페놀과 플라보노이드 함량이 가장 높은 에틸아세테이트 분획물의 항산화 활성과 MMPs 생성 억제 효과가 가장 높았다.

엽차용 녹차 추출물 및 분획물의 항균효과 (Antimicrobial Activity of Extracts and Fractions of Green Tea Used for Coarse Tea)

  • 정숙현;윤교희
    • 한국식품영양과학회지
    • /
    • 제37권11호
    • /
    • pp.1382-1388
    • /
    • 2008
  • 9월에 수확하여 엽차용 녹차로 시판되는 보성산 녹차를 온수, $80^{\circ}C$ 열수, 70% ethanol 용액으로 추출하고, 70% ethanol 추출물을 다시 hexane, chloroform, ethyl acetate, butanol로 분획한 다음 녹차 추출물과 분획물의 그램 양성균과 그램 음성균 8종에 대한 항균활성에 대하여 조사를 하였다. 녹차의 추출 수율은 70% ethanol 추출물은 33.0%, ethyl acetate 분획물은 11.2%를 보였다. 8종의 세균에 대한 녹차 추출물 간의 항균활성은 70% 에탄올 추출물의 경우 수 추출물에 비하여 Vibrio parahaemolyticus(V. parahaemolyticu) 및 Staphylococcus aureus(S. aureus)에 대하여 가장 높았다. 70% 에탄올 추출물로부터 여러 가지 용매를 달리하여 분획한 분획물 간의 항균활성은 70% ethanol 추출물에 비하여 ethyl acetate 분획물의 경우 Klebsiella pneumoniae, V. parahaemolyticus, S. aureus, Bacillus subtilis(B. subtilis) 및 Streptococcus mutans(S. mutans)와 같은 5종의 세균에 대하여 높았다. 70% ethanol 추출물 유래 ethyl acetate 분획물의 MIC는 B. subtilis의 경우 $5\;{\mu}L$/disc이었고, S. aureus 와 S. mutans의 경우 $3\;{\mu}L$/disc이었으며, V. parahaemolyticus의 경우 $3\;{\mu}L$/disc 이하로 아주 낮았다. Ethyl acetate 분획물의 첨가 농도에 따른 항균효과는 B. subtilis와 S. mutans 두 균종에서 확연히 나타났고 B. subtilis는 0.05% 이상의 첨가로 24시간 증식시켰을 때 control에 비하여 균증식이 90% 이상 억제됨을 보였으며, S. mutans는 동일한 균증식 억제 효과를 얻기 위하여 0.1% 이상의 ethyl acetate 분획물 농도가 요구되었다. Ethyl acetate 분획물의 열처리($121^{\circ}C$, 20분)는 균종에 따라 10%정도의 항균활성을 감소시켰다. 이와 같은 결과를 종합할 때 9월에 채엽된 저렴한 녹차로 천연 항균제 혹은 식품보존료의 개발은 충분한 잠재력이 있는 것으로 판단되었다.

Isolation of Antimicrobial Substance from the Korean Traditional Leaf Mustard, Brassica juncea Coss.

  • Kang Seong-Koo
    • Plant Resources
    • /
    • 제8권2호
    • /
    • pp.145-154
    • /
    • 2005
  • The antimicrobial effect of each fraction after fractionation of an ethanol extract of leaf mustard was examined in terms of nucleic acid, chloroform, ethylacetate, and butanol. The ethylacetate fraction, which showed the strongest level of antimicrobial effect among the different ethanol extract fractions of leaf mustard, was isolated and purified using silica gel column chromatography and HPLC, respectively, to obtain a single antimicrobial substance called KLM-1. The antimicrobial effect of this substance was 10 times higher than that of the ethylacetate fraction. A further study is on the way to confirm the structure of the antimicrobial substance KLM-1 through LC/Mass and NMR.

  • PDF