• Journal of Microbiology
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• 제45권4호
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• pp.350-357
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• 2007

This study was conducted in an effort to evaluate the antimicrobial activity and antibiotic-resistant gene regulation from Saliva miltiorrhiza Bunge on methicillin-resistant Staphylococcus aureus (MRSA). A variety of solvent fractions and methanol extracts of S. miltiorrhiza Bunge were tested in order to determine its antimicrobial activities against S. aureus and MRSA. As a result, the hexane fraction of S. miltiorrhiza Bunge evidenced the highest levels of antimicrobial activity against S. aureus and MRSA. The MICs of the hexane fraction against various MRSA specimens were $64. The hexane fraction evidenced inhibitory effects superior to those of the chloroform fraction. The results showed inhibition zones of hexane (16 mm) and chloroform (14 mm) fractions against MRSA KCCM 40511 at $1,000{\mu}g/disc$. The hexane and chloroform fractions inhibited the expression of the resistant genes, mecA, mecR1, and femA in mRNA. Moreover, the results of Western blotting assays indicated that the hexane and chloroform fractions inhibited the expression of the resistant protein, PBP2a. These results reveal that the hexane and chloroform fractions of S. miltiorrhiza Bunge may prove to be a valuable choice for studies targeted toward the development of new antimicrobial agents.

• 한국식품조리과학회지
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• 제13권1호
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• pp.56-63
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• 1997

천연물에 존재하는 항균성 물질을 이용하여 천연식품보존제를 개발하고자 한약재 및 민간요법으로 사용되어온 우리나라 전통 향신료인 산초의 항균성을 검색한 결과 클로로포름 분획 에서 B. subtilis, E. coli, L.plantarum 및 S. aureus 등 4종의 균주에 대해 모두 l000 $\mu\textrm{g}$/$m\ell$에서 가장 큰 저해능을 보였으며, 에틸아세테이트 분획 또한 B. sutilis와 E. coli에 대해서 각각 1000 $\mu\textrm{g}$/$m\ell$과 500 $\mu\textrm{g}$/$m\ell$에서 성장이 억제되었다. 가장 큰 활성을 보인 클로로포름층을 다시 분획하여 4그룹으로 나누어 항균성을 검색한 결과 3번 분획에서 4균주에 대해 750 $\mu\textrm{g}$/$m\ell$에서 성장저해 효과를 보였다. chloroform 2차 분획에서 활성이 높게 나타난 subfraction No. 2는 IR, NMR, 그리고 Gchfs를 이용하여 분석한 결과 hexadecanoic acid로 동정되었다.

• Journal of Ginseng Research
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• 제17권3호
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• pp.246-249
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• 1993

Hexane, Hexane/diethylether and chloroform fractions from Panax ginseng C.A. Meyer stroungly inhibitied human platelet aggregation induced by a high dose of thrombin (2$\mu$/ml). Chloroform fraction more strongly inhibited the platelet aggregation than the other two fraction among them. There were fatty acid ester and phosphate ester instead of polyacethylene compounds in the chloroform fraction.

• 생명과학회지
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• 제12권1호
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• pp.106-112
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• 2002

췌장에서 분비되는 콜레스테롤 에스터레이즈(pCEase)와 소장의 acyl coenzyme A:cholesterol acyltransferase (ACAT)는 흡수된 콜레스테롤을 다시 ester화하는데 관여한다. 한방재료 중 순환촉진작용 및 건위작용 등을 가지는 계피(Cinnamomi cortex)의 에탄올 추출물이 in vitro에서 pCEase 활성에 대하여 강한 저해작용을 보였으며 에탄올 추출물의 용매분획 중 클로로포름분획이 다른 분획들, 즉 에틸 아세테이트분획, 부탄올분획 및 물 분획보다 저해활성이 강하였다. 계피의 클로로포름분획이 고콜레스테롤식 이를 섭취시킨 rat에서 혈중 콜레스테롤치를 저하시키는 효과가 있는지 측정한 실험에서 클로로포름분획을 150 mg/kg 섭취시켰을 경우 고콜레스테롤식이만은 투여한 대조군에 비하여 총cholesterol 함량이 25.1% 감소하였으며, HDL-cholesterol 함량도 33.4$\pm$1.82 g/dl로 정상군 수준으로 회복되었고 동맥경화지수 역시 현저하게 감소된 것으로 나타났다. 콜레스테롤 생합성에 관여하는 효소인 HMG-CoA reductase 활성을 측정한 결과, 고콜레스테롤 식이에 의해 감소되었던 활성이 계피 클로로포름분획의 투여량을 증가시킬수록 증가하였으나 150 mg/kg 투여군 에서도 정상군에 비하여 유의적인 감소를 보였다. 또한 계피 클로로포름분획의 독성검사 결과, mouse에서 LD$_{50}$ 은 1,300 mg/kg으로 산출되었다.

• 한국식품영양과학회지
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• 제30권6호
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• pp.1260-1265
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• 2001

지구자나무 methanol 추출물의 hexane, chloroform, ethylacetate, butanol 및 $H_2O$ 분획물이 $CCl_4$로 급성 간 독성이 유발된 흰쥐의 효소 활성과 항산화 활성 효과를 검토한 결과, 대조군과 비교하여 $CCl_4$ 단독 투여군에서 ALT, AST, ALP, ${\gamma}$-GTP 및 LDH의 활성과 bilirubin, cholesterol 및 TG의 함량이 유의적으로 증가(p<0.05)하였으나, ALT및 AST 활성도는 $CCl_4$ 단독 투여군과 비교하여 chloroform 분획물을 투여한 군에서, ALP 활성도는 hexane 분획물을 투여한 군에서, bilirubin 함량은 butanol과 $H_2O$ 분획물을 각각 투여한 군에서, cholesterol 함량은 chloroform 과 $H_2O$ 분획물을 각각 투여한 군에서, TG 함량은 chloroform 분획물을 투여한 군에서 유의적인 감소(p<0.05)를 나타내었다. 또한 간조직 중 의 과산화 지질함량과 SOD, catalase및 GSH-PB(활성은 대조군과 비교하여 $CCl_4$ 단독 투여군에서 유의적인 증가(p<0.05)를 나타내었으나, 과산화 지질 함량은 $CCl_4$ 단독 투여군과 비교하여 hexane, chloroform, butanol 및 $H_2O$ 분획물을 각각 투여한 군에서, catalase 활성은 chloroform, ethylacetate, butanol 및 $H_2O$를 각각 투여한 군에서, GSH-Px 활성은 chloroform, butanol 및 $H_2O$ 분획물을 각각 투여한 군에서 유의적인 감소(p<0.05)를 나타내었다. 한편, Blutathione함량과 GST 활성은 대조군에 비해 $CCl_4$ 단독 투여군에서 유의적인 감소 (p<0.05)를 나타내었으나, glutathione 함량은 chloroform과 ethylacetate를 각각 투여한 군에서, GST 활성은 hexane과 chloroform을 각각 투여한 군에서 $CCl_4$단독 투여군과 비교하여 유의적인 증가(p<0.05)를 나타내었다. 따라서 본 실험 결과 지구자나무 분획물이 $CCl_4$로 유발된 흰쥐의 간 손상에 미치는 영향을 검토한 결과, chlornform 분획물이 간세포의 괴사와 변성에 지표가 되는 ALT와 AST 활성도의 저하효과와 간 손상에 따른 과산화 지질 함량과 SOD, Catalase, GSH-Px등의 활성 감소, glutathione함량 및 GST활성의 증가를 나타내어 생채내의 free radical에 의한 간보호 작용이 있는 생리활성 물질을 함유하고 있음이 추정되며, 아울러 이 분획물을 더욱 분리하여 물질의 구조와 반응 기전 제시와 함께 간 손상의 예방 및 치료에 도움이 될 수 있는 물질을 개발할 가치가 있다고 사료된다

• 동의생리병리학회지
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• 제18권5호
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• pp.1343-1346
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• 2004

Cornis fructus were extracted by successive extractions and then fractionated with chloroform extract to get active fractions. This study was performed to determine the cytotoxic effect of chloroform extract from Corn is fructus on NIH 3T3 fibroblasts and cancer cell lines using MTT assay. All extracts did not exhibit cytotoxicity in NIH 3T3 fibroblasts. Chloroform extract exhibited antitumor activity in A549, MDA-MB-123, B16 melanoma and SNU-C4 cells. Futher fractionation with chloroform extract was performed to obtain effective fractions. 3 fraction showed the strongest cytotoxic effect against A549, MDA-MB-123, B16 melanoma and SNU-C4 cells. These results suggest that 3 fraction of the chloroform extract from Cornis fructus possessed bioactive material of antitumorous agents.

• Journal of Microbiology and Biotechnology
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• 제21권10호
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• pp.1043-1048
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• 2011

A methanol extract of Cassia tora seeds was successively partitioned with diethyl ether, chloroform, ethyl acetate, and water, and the antitumor-promoting activity of the solvent fractions was determined by inhibition of Epstein-Barr virus early antigen (EBV-EA) activation induced by teleocidin B-4 in Raji cells. The diethyl ether (68.7%) and chloroform (91.2%) fractions and the hydrolysate (94.3%) of the ethyl acetate fraction had strong inhibitory activities. The chloroform and ethyl acetate fractions were chromatographed on silica gel and further purified by HPLC. Three active compounds, obtusifolin-2-glucoside (75.0%), chryso-obtusin-6-glucoside (56.8%), and norrubrofusarin-6-glucoside (39.4%), were obtained from the ethyl acetate fraction, and two active compounds, questin (97.9%) and chryso-obtusin (53.8%), were isolated from the chloroform fraction.

• Food Science and Biotechnology
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• 제18권2호
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• pp.513-518
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• 2009

This study was carried out to investigate the changes of yield, total phenolics, saponin content and composition, antimicrobial, and antioxidant activities of various fractions of fine ginseng root (Panax ginseng C.A. Mayer) by maceration method in the order of increasing polarity (hexane, chloroform, ethyl acetate, butanol, and water). Butanol fraction showed the highest total saponin content compare to other fractions. Hexane fraction could harvest significantly high ginsenoside Rg2, Rg1, and Rf (p<0.05). And the contents of ginsenoside Rh1, Rg3, and Rg1 showed relatively higher in the fraction of ethyl acetate than other fractions. The system of hexane-chloroform-ethyl aceate-butanol showed relatively high content of ginsenoside Re, Rd, Rc, Rb3, and Rb1. However, the last fraction of water still remained lots of Rb2 content. The fraction of water was the highest phenolics. The 1,1-diphenyl-2-picryhydrazil, superoxide, and hydroxyl radical scavenging activity of water fraction was higher than the other fractions. In antimicrobial activity, the fraction of hexane showed relatively high antimicrobial activity against Pseudomonas aeruginosa, Salmonella typhimurium, Staphylococcus aureus, Bacillus cereus, and Escherichia coli. And the fractions of the chloroform and ethyl acetate showed higher antimicrobial activities than the other samples in against P. aeruginosa and S. typhimurium.

• 생약학회지
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• 제50권2호
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• pp.112-117
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• 2019

In this study, extracts of bark from Ulmus davidiana var. japonica and its fractions were investigated the antioxidative, antibacterial and tyrosinase inhibition activity for physiological activity towards functional applications. In the measurement of DPPH radical scavenging activity, the ethyl acetate fraction showed higher radical scavenging ability than others. Moreover, in the tyrosinase inhibition assay, showed that the ethyl acetate fraction has good inhibition effects. Results of the DPPH radical scavenging and tyrosinase inhibition activity are related with the total polyphenol concentrations of ethyl acetate fraction. In antibacterial activity used to find out by utilizing the disc diffusion assay, chloroform fraction showed strong effect against Staphylococcus aureus and S. epidermidis. These results are related with the flavonoid contents of chloroform fraction. On the other hand, in the L929 cell viability measurement by MTT assay, the hexane, butanol and aqueous fraction treated at high concentration were showed cytotoxicity. But the others samples were exhibited a moderate viabilities. As a result of investigated the antioxidant and tyrosinase inhibition activity, the ethyl acetate fraction could be applicable for cosmetics related fields. And the chloroform fraction showed significant antibacterial activity against S. aureus and S. epidermidis.

• 한국식품영양과학회지
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• 제30권1호
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• pp.97-101
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• 2001

This study was done to investigate the protective effects of Diospyrus kaki Folium on carbon tetrachloride intoxicated rats. Male Sprague-Dawley rats (200~230g) was used. Experimental groups were divided into normal group and $CCl_{4}$-treated group and then $CCl_{4}$-treated groups were divided into 7 groups: only $CCl_{4}$-treated group, methanol extract pretreated group, butanol fraction pretreated group and $H_{2}O$ fraction pretreated group, $CCl_{4}$ treated groups were injected with $CCl_{4}$ 0.6 mg/kg (ip). The activities of ananine aminotransferasein hexane, chloroform and $H_{2}O$ fraction pretreated groups were significantly decreased (p<0.05) compared to the only $CCl_{4}$-treated group and also activity of aspartate aminotransferase and hepatic malondialdehyde content in $H_{2}O$ fraction pretreated group were significantly decreased (p<0.05) compared to the only $CCl_{4}$-treated group. The activity of alkaline phosphatase in chloroform and $H_{2}O$ fraction pretreated groups were decreased compared to the only $CCl_{4}$-treated group but the difference was not statistically significant. The activity of ${\gamma}$-glutamyltranspeptidase in hexane, chloroform and ethylacetate fraction pretreated groups were significantly decreased (p<0.05) compared to the only $CCl_{4}$-treated group. The contents of cholesterol and triglyceride were not influenced in any fraction pretreated groups, but HDL-cholesterol content in hexane and chloroform fraction pretreated groups were significantly increased (p<0.05) compared to the only $CCl_{4}$-treated group. Therefore, these results demonstrate a possible hepatoprotective role of $H_{2}O$ fraction of Diospyrus kaki Folium methanol extract in carbon tetrachloride intoxicated rats.