共查询到20条相似文献,搜索用时 31 毫秒
1.
Kariba RM 《Fitoterapia》2002,73(6):523-525
Methanol extract of the stem bark of Hymenodictyon parvifolium was tested for its antifungal and antibacterial activity. The extract was found to have inhibitory effect against all the pathogens tested. 相似文献
2.
The antibacterial and antifungal properties of the ethanol extract of Erigeron breviscapus whole plant was evaluated. The extract showed a moderate antibacterial activity and a high antifungal activity. 相似文献
3.
Rangkadilok N Tongchusak S Boonhok R Chaiyaroj SC Junyaprasert VB Buajeeb W Akanimanee J Raksasuk T Suddhasthira T Satayavivad J 《Fitoterapia》2012,83(3):545-553
Longan, Dimocarpus longan Lour., contains polyphenolic compounds which exhibit several pharmacological properties. This study aims to evaluate antifungal activities of longan fruit extract in comparison to its active compounds. The results showed that longan seed exhibited antifungal activity against the opportunistic yeasts (Candida species and Cryptococcus neoformans). In contrast, longan pulp and whole fruit did not demonstrate any inhibitory effects. Ellagic acid showed the most potent antifungal activity followed by corilagin and gallic acid, respectively. Ellagic acid inhibited Candida parapsilosis and C. neoformans more effectively than Candida krusei and also some Candida albicans clinical strains. Baidam cultivar possessed higher antifungal activity (MIC=500-4000 μg/ml) as it contained higher contents of ellagic acid and gallic acid than Edor (MIC=1000-8000 μg/ml). For antibacterial activity, only corilagin and gallic acid possessed weak to moderate inhibitory effects against Staphylococcus aureus and Streptococcus mutans, respectively. Longan seed was then applied in the oral care products. Longan effervescent granule (5% extract) significantly reduced adhesion of C. albicans to acrylic strips. Mouthwash containing 0.5% extract exhibited good antifungal activity compared to a commercial product. These findings indicated that longan seed extract and its polyphenolic compounds can be used as an antifungal agent in oral care products for the treatment of opportunistic yeast infection. 相似文献
4.
柿叶化学成分及其抑菌活性研究 总被引:9,自引:0,他引:9
对柿叶的化学成分进行了定性分析和抗菌活性的研究.通过系统预试,初步确定柿叶中含有生物碱、皂苷、氨基酸、多肽、有机酸、酚类和鞣质、糖类、甾体、总黄酮、强心苷、蒽醌、挥发油等物质.抑制活性试验结果显示:乙醇提取物和乙酸乙酯萃取物对供试的6种细菌有较强的抑制作用;水相对供试的5种真菌有较强的抑制作用,而且对细菌有较小抑制作用;石油醚相对真菌和细菌几乎无抑制作用;正丁醇萃取物对细菌有不同程度的抑制作用,而对真菌无抑制作用.用不同质量浓度的乙酸乙酯提取物进行抑菌活性试验,结果显示:质量浓度越高,其抑菌能力越强,而且,在不同质量浓度下,对测试的6个细菌的抑制活性的大小顺序不一致. 相似文献
5.
Iauk L Costanzo R Caccamo F Rapisarda A Musumeci R Milazzo I Blandino G 《Fitoterapia》2007,78(2):159-161
The antifungal activity of methanolic extract and alkaloidal fraction of Berberis aetnensis against Candida species was investigated. The crude extract was active against Candida species, this activity being higher than that of the alkaloidal fraction and berberine. 相似文献
6.
Camacho-Hernández IL Chávez-Velázquez JA Uribe-Beltrán MJ Ríos-Morgan A Delgado-Vargas F 《Fitoterapia》2002,73(5):411-413
The methanol extract of the fruit pulp of Bromelia pinguin was evaluated for its antifungal activity. The extract showed a significant activity against some Trichophyton strains, although Candida strains were generally insensitive. 相似文献
7.
The methanolic extract of the aerial parts of Satureja khuzistanica was investigated for its antimicrobial activity. The maximum antibacterial and antifungal activities were observed against Staphylococcus aureus and Candida albicans. 相似文献
8.
Gupta M Mazumder UK Chaudhuri I Chaudhuri RK Bose P Bhattacharya S Manikandan L Patra S 《Fitoterapia》2002,73(2):168-170
Petroleum ether and methanolic extracts of leaves of Eupatorium ayapana were tested for their antimicrobial activity. The petroleum ether extract showed higher antibacterial and antifungal activity than the methanolic extract. 相似文献
9.
Chia-Che Wu Chi-Lin Wu Shou-Ling Huang Hui-Ting Chang 《Wood Science and Technology》2012,46(4):737-747
Wood-rotting fungi lead to great economic losses of lignocellulosic materials. The influence of extractives on the decay resistance of Michelia formosana wood and the antifungal activities of heartwood extract and its constituent against wood-rotting fungi were evaluated. Results revealed that extractives had a strong influence on the decay resistance of M. formosana heartwood. The unextracted heartwood block was resistant to fungi, while the extracted heartwood block was not. Antifungal activities of ethanolic extract from heartwood were assessed; results revealed that the ethanolic extract possessed good antifungal activity against wood-rotting fungi. The ethanolic extract was further separated into four fractions including n-hexane-soluble fraction, ethyl acetate-soluble fraction, n-butanol-soluble fraction, and water-soluble fraction. Among these fractions, the n-hexane-soluble fraction exhibited the best antifungal ability. An alkaloid, liriodenine, was isolated from the active n-hexane-soluble fraction. IC50 values of liriodenine against the white-rot fungi Lenzites betulina and Trametes versicolor were 0.76 and 3.50?μg/mL, respectively. IC50 values of liriodenine against the brown-rot fungi Laetiporus sulphureus, Gloeophyllum trabeum, and Fomitopsis pinicola were all lower than 2.0?μg/mL. Results indicated that liriodenine exhibited a broad spectrum of antifungal activity and great potential to develop as an environmentally benign fungicide for the preservation of lignocellulosic materials. 相似文献
10.
P S Athukoralage H M Herath S A Deraniyagala R L Wijesundera P A Weerasinghe 《Fitoterapia》2001,72(5):565-567
The hexane extract of the stem bark of Gordonia dassanayakei showed high antifungal activity against plant pathogenic fungi Curvularia sp., Colletotrichum gloeosporioides, Rhizoctonia solani, Corynespora cassiicola, and Fusarium sp. A compound responsible for the antifungal activity was isolated and identified as 3-formyl-2,4-dihydroxy-6-methylbenzoic acid 3-hydroxy-4-(methoxycarbonyl)-2,5-dimethylphenyl ester (1). 相似文献
11.
Various solvent extracts of Loranthus micranthus exhibited varying degrees of antimicrobial activity. Only the petroleum ether extract showed antifungal activity. The methanol extract showed the best antimicrobial activity against Escherichia coli and Bacillus subtilis. 相似文献
12.
13.
Successive petroleum ether, dichloromethane and methanol extracts of Newtonia hildebrandtii stem bark were tested in vitro for their antifungal and antibacterial activity. The methanol extract was found to be the most effective against the tested pathogens. 相似文献
14.
Fractions prepared from the methanol extract of Buchholzia coriacea stem bark exhibited a high concentration-dependent antibacterial and antifungal activity compared to the standard antibiotics, ampicillin and tioconazole. In the brine shrimp lethality (BSL) assay, the methanol extract was found to be non-toxic with an LC(50) of 1031 microg/ml. The two main compounds present in the most active fraction were isolated and identified as lupeol and beta-sitosterol. 相似文献
15.
Antifungal activity of Agapanthus africanus extractives 总被引:1,自引:0,他引:1
The ethanolic extract of the rhizomes of Agapanthus africanus showed antifungal activity. In bioassay guided fractionation, n-butanol fraction exhibited significant activity against human pathogens. A saponin, (25R)-spirost-7-en-2alpha,3beta,5alpha-triol-3-O-[alpha-L-rhamnopyranosyl(1-->2)-[beta-D-galactopyranosyl (1-->3)] beta-D-glucopyranoside (1), responsible for the antifungal activity and having MIC value of 15.6 microg/ml against Trychophyton mentagrophytes and Sporothrix schenekii, was isolated and identified as active constituent of the plant. 相似文献
16.
Antimicrobial flavonoids from the stem bark of Erythrina burttii 总被引:1,自引:0,他引:1
The chloroform extract of the stem bark of Erythrina burttii showed antifungal and antibacterial activities using the disk diffusion method. Flavonoids were identified as the active principles. Activities were observed against fungi and Gram(+) bacteria, but the Gram(-) bacteria Escherichia coli was resistant. 相似文献
17.
The thiophene polyine (E)-2-[5-(hept-5-en-1,3-diynyl)-thien-2-yl]-ethan-1,2-diol was isolated from an ethanolic extract of underground parts of Leuzea carthamoides. The thiophene polyine demonstrated significant antifungal activity against all tested species. 相似文献
18.
The antimicrobial and free radical scavenging activity of the ethanol extract and fractions of Gentianella nitida have been assessed. The most susceptible microorganisms were Candida albicans, Trichophyton mentagrophytes and Microsporum gypseum. The antifungal activity was concentrated in the 90% methanol and nonsoluble fractions, while the radical scavenging activity was stronger in the ethyl acetate and nonsoluble fractions. 相似文献
19.
Gry Alfredsen Halvor Solheim Rune Slimestad 《European Journal of Forest Research》2008,127(5):387-393
The inhibitory effect of methanol bark extracts from six deciduous and three coniferous European tree species were bioassayed
against eight fungi from the different damage categories, brown rot, white rot, canker and blue-stain. This is the first report
providing data on the antifungal activity of several Europaen tree species against fungi within these damage categories. Generally
the decay fungi were more inhibited by the bark extracts than the blue-stain fungi, while the lowest inhibition was found
among the cancer fungi. The main pattern found between the fungal groups in relation to the bark extracts in this study is
believed to be caused by the route of ingress. Acer platanoides bark extract proved to be the most efficient bark extract tested, significantly reducing the growth rate of all tested fungi.
Betula pubescens bark extract generally gave the weakest reduction in growth rate. In this study, the conifer bark extracts were in general
more active against the canker and blue stain ascomycete fungi than the deciduous trees extracts. 相似文献
20.
The antibacterial and antifungal properties of ethanolic extract of the leaves of Pedilanthus tithymaloides and some of its constituents were investigated by the dilution method. 相似文献