• 약학회지
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• 제36권6호
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• pp.548-555
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• 1992

The biological activities of fruits of Poncirus trifoliata have been studied. 70% Ethanol extract of Ponciri Fructus was fractionated with ether, ethyl acetate and n-butanol by turns. The ether fraction showed antibacterial activity on Staphylococcus aureus and inhibited the contractability of the isolated mice ileum. The ethyl acetate and n-butanol fractions showed the anti-edematous effect on the carrageenin-induced edema of rat hindpaw. From the n-butanol fraction, one of the flavonoid glycoside was isolated and identified as poncirin. Ponciri Fructus contained about 6% poncirin which was 5,7-dihydroxy-4´-methoxy flavanone rhamnoglucoside and poncirin showed antiinflammatory activities. Poncirin was considered as the major effective component of Ponciri Fructus.

• 한국식품영양과학회지
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• 제38권7호
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• pp.951-957
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• 2009

본 연구는 추출용매의 농도에 따른 추출수율 및 항균성을 측정하였으며 항산화 활성과 항균활성의 상관관계를 검토하고, 분획 용매에 따른 치아우식균에 대한 항균성 등을 측정하여 천연 항균제인 인삼추출물의 치아우식 예방에의 이용 가능성을 확인하기 위하여 실시하였다. 백삼 원료의 수분 함량은 20%, 배럴온도는 $100^{\circ}C$, $140^{\circ}C$ 두 조건으로 압출성형 하였다. 항균성 측정 결과 디스크 확산법은 S. mutans보다 L. casei 균에 대한 저해율이 높았으며 60% Et-OH 추출물이 항균활성이 컸다. GTase 또한 디스크 확산법과 같이 60% Et-OH에서 S. mutans에 대한 우수한 저해효과를 보였다. 반대로 최소저해농도 측정에서는 Et-OH 농도 80%가 60%보다 모든 인삼추출물에서 항균활성이 높게 나타났고 인삼추출물의 농도가 높아질수록 저해율도 증가하였다. L.casei 균에 대한 저해율은 대부분 150 mg/mL 농도부터 저해가 진행되었지만 $140^{\circ}C$ 압출성형 백삼은 100 mg/mL 농도부터 저해가 진행되면서 높은 저해효과를 보였다. 분획 용매에 따라서는 n-butanol과 n-hexane 추출물에서 항균성을 보였으며 사포닌과 함께 페놀계 화합물이 용출되면서 n-butanol 분획의 항균활성이 증가한 것으로 사료된다.

• 한국미생물·생명공학회지
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• 제21권6호
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• pp.628-634
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• 1993

The inhibitory effects of various extracts from Chinese pepper on the mutagenicity and the growth of MG-63 human osteosarcoma cells were studied. Chinese pepper was extracted with methanol and then the methanol extract was further fractionated by using hexane, chloroform, ethyl acetate and butanol. The methanol extract of Chinese pepper revealed the strong antimutagenic activity on the aflatoxin B1(AFB1) and N-methyl-N'-nitro-N-nitrosoguanidine(MNNG) in Ames mutagenicity test and SOS chromotest.

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.145.2-145.2
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• 2003

Gardenia jasminoides Ellis has been used in traditional medicine for the treatment of inflammation, jaundice, headache, fever and hypertension. The 70％ ethanolic extract of gardenia fruit showed strong anti-angiogenic activity in the chick embryo chorioallantoic membrane (CAM) assay. Among hexane, ethyl acetate, n-butanol and aqueous fractions prepared from the 70％ ethanolic extract, the n-butanol fraction was found to be most effective in the CAM assay. (omitted)

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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• pp.239-240
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• 2003

Type I (collagen) and procollagen are reduced in aged human skin. This reduction could result from increased degration by metalloproteinases and from reduced procollagen synthesis and skin collagenase is required for initiation of the degration of type I collagen. In the present study, we study on assay the collagen and collagenase in natural plants using the fibroblast human skin cell. We select the 15 kind of plants used to herbal and 4 kind of fraction(by methylene chloride, ethyl acetate, n-butanol, water). Among these extract, the ethyl acetate fraction from benincasa hispida/prunus persica, trichosanthes kiriowii, trogopterus xanthipes and methylene chloride fractions from benincasa hispida/prunus persica, torilis japonica and n-butanol fraction from cnidium officinale, chrysanthemum sibiricum were selected for further experiments as they exhibited distinctive amount of collagen compared to other natural extracts. These extracts were again subjected to collagenase assay test. Benincasa hispida/prunus persica extract was shown to have exellent collagen synthesis activity from result of the collagen assay test and the other extract was shown to have over 130% of collagen synthesis activity. But, in the study of collagenase assay test just only trogopterus xanthipes extract was shown to have collagenase inhibition.

• 공업화학
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• 제21권1호
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• pp.6-10
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• 2010

오죽(Phyllostachys nigra Munro)을 이용하여 추출용매에 따른 총 페놀함량, 항산화 활성, superoxide dismutase (SOD) 유사활성, 아질산 소거능, tyrosinase활성 저해능, angiotensin-converting enzyme (ACE) 저해활성을 in vitro에서 검토 했다. Ethyl acetate와 hexane을 추출용매로 이용할 때 총 페놀화합물 함량은 각각 $44.1{\pm}2.3mg/kg$와 $47.3{\pm}2.4mg/kg$였다. 항산화 효과는 추출용매 종류에 따라 각각 다르게 나타났고 hexane > ethyl acetate > n-butanol > methanol > water순이었다. 그러나 SOD 활성은 물 > methanol > n-butanol> hexane> ethyl acetate 추출 순이었다. 아질산 소거능은 pH 1.2에서 추출용매에 따라 약간의 차이는 있었으나 54~69.2% 범위였다. 그러나 pH가 증가함에 따라 추출용매에 관계없이 모두 감소하였다. 특히 pH가 1.2에서 6.0으로 증가 할 경우 ethyl acetate 추출물의 아질산 소가능은 $69.2{\pm}3.1%$에서 $7.8{\pm}2.4%$로 감소하였다. 오죽 추출물의 tyrosinase의 저해 활성은 추출용매에 따라 약간 차이가 있으나 전반적으로 15.2~21.3% 범위였다. 추출용매에 따른 tyrosinase의 저해 활성은 water > methanol > n-butanol > hexane > ethyl acetate 추출 순이었다.

• Journal of Nutrition and Health
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• 제41권1호
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• pp.22-30
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• 2008

사철쑥 (Artemisia capillaris Thunberg)이 암세포의 세포고사에 미치는 영향을 보기 위하여 인체 자국경부 상피암 세포주인 HeLa 세포를 이용하여 사철쑥의 메탄올, 에틸아세테이트, 부탄올 추출물의 농도를 각각 0, 100, 500, 1,000 및 $2,000{\mu}g/ml$로 처리하여 세포활성도, 세포형태 변화, DNA분절, DNA 함량을 알아보았다. 세포활성도는 사철쑥의 메탄올, 에틸아세테이트 추출물이 농도에 비례하여 HeLa세포생존율을 감소시켰지만 부탄올 추출물에서는 그 정도가 약하였고 물 추출물에서는 거의 관찰되지 않았다. 사철쑥의 메탄올, 에틸아세테이트, 부탄올과 물 추출물은 각 추출물의 농도에 의존적으로 배양된 HeLa 세포에 세포부착을 방해하고 세포막의 blobbing 및 핵의 분절화 등 세포고사의 특징들을 나타냈다. 사다리형 DNA 분절현상은 사철쑥의 메탄올 추출물 $1,000{\mu}g/ml$, $2,000{\mu}g/ml$ 처리군에서 관찰되었다. 유세포분석기 (FACS)를 이용하여 측정한 고사세포의 DNA 함량은 메탄올과 에틸아세테이트, 부탄올 추출물이 농도 의존적으로 증가하였다. 이상의 결과는 사철쑥이 암세포의 세포고사를 증가시킴으로서 암 억제 작용이 있을 것을 시사해 준다고 할 수 있다.

• 생약학회지
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• 제45권1호
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• pp.35-40
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• 2014

In this study, in order to search for new functional materials from natural products, was carried out the study of antioxidant active ingredients in persimmon calyx(calyx of Diospyros kaki Thunberg). I have experimented with the effect of antioxidant activity of five different extract(MeOH, n-hexane, EtOAc, n-BuOH and $H_2O$ extract) obtained from persimmon calyx. As a result, the butanol extract, that is the main component fraction of antioxidant activity was found. Three compounds were isolated by silica gel column chromatography from the n-BuOH extract of persimmon calyx. Their structures of compound 1, 2 and 3 isolated from n-BuOH extract of persimmon calyx were identified as quercetin, (+)-catechin and gallic acid by using the TLC, $^1H$-NMR and $^{13}C$-NMR.

• 생약학회지
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• 제39권3호
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• pp.228-232
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• 2008

Antidiabetic effects of an aqueous and solvent extract prepared from the root, stem and fruit parts of Acanthopanax senticosus, were investigated in experimental Streptozotocin (STZ)-induced diabetic rats model. The n-butanol and water extracts of A. senticosus were orally administrated once a day for 6 days. The n-butanol extracts of fruit (FB) showed highest efficiency than other groups (water extracts of stem, root and fruit; butanol extracts of stem, root) on serum glucose values in the STZ-induced diabetic rats. We have studied gene expression of glucose transporter genes in C2C12 skeletal muscle cell line during differentiation treated by the n-butanol and water extracts of A. senticosus, SW, RW, FW, SB, RB and FB. The GLUT4 gene was high expressed by FB treatment. These findings suggest that FB of A. senticosus have GLUT4 gene expression activity for glucose homeostasis and may have beneficial effects on blood glucose lowering in the diabetic patients.

• Natural Product Sciences
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• 제29권1호
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• pp.10-16
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• 2023

We previously reported that dried Lysimachia christinae whole plant extract exerted significant neuroprotective activity. In this study, we tried to isolate neuroprotective compounds of L. christinae. We evaluated the neuroprotective activity of the four fractions (hexane, chloroform, ethyl acetate, and n-butanol fractions) of methanol extract. Among them, ethyl acetate and n-butanol fractions showed most potent neuroprotective activity against glutamate excitotoxicity. Nine compounds were isolated from ethyl acetate and n-butanol fractions of L. christinae extract and identified as cynaroside (1), (3,4,5,6-tetrahydroxytetrahydro-2H-pyran-2-yl)methyl-3-hydroxy-2-octyldopentaconta-23,33-dienoate (2), androst-16-ene-3,6-diol (3), 2-hydroxy-24-propoxytetracos-4-enoic acid (4), 2-hydroxy-24-methoxytetracos-4-enoic acid (5), 12-(stearoyloxy)octadec-9-enoic acid (6), β-sitosterol (7), (E)-4-(3,4-dimethoxyphenyl)but-3-en-1-yl palmitate (8) and (1S,2S,3R,4R)-4-(((2S,3R,4R,5R,6S)-2-(((2R,3R,4S,5R,6R)-2-(3,4-dimethoxyphenethoxy)-3,5-dihydroxy-6-(hydroxymethyl) tetrahydro-2H-pyran-4-yl)oxy)-4,5-dihydroxy-6-methyltetrahydro-2H-pyran-3-yl)oxy)cyclohexane-1,2,3-triol (9) by spectroscopic data such as UV, IR, NMR, Mass spectroscopy. Their neuroprotective activity was evaluated by MTT assay. Cynaroside (1) and androst-16-ene-3,6-diol (3) had significant neuroprotective activity against glutamate-injured HT22 cells. The neuroprotective efficacy of cynaroside (1) and androst-16-ene-3,6-diol (3) was related to their anti-oxidative activity.