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1.
The ethanolic extracts of the dry fruits of Caesalpinia pulcherrima, aerial parts of Euphorbia hirta and flowers of Asystasia gangeticum were tested for antimicrobial activity. The three plants exhibited a broad spectrum of antimicrobial activity, particularly against Escherichia coli (enteropathogen), Proteus vulgaris, Pseudomonas aeruginosa and Staphylococcus aureus. 相似文献
2.
Oliveira DF Pereira AC Figueiredo HC Carvalho DA Silva G Nunes AS Alves DS Carvalho HW 《Fitoterapia》2007,78(2):142-145
A screening was conducted with 26 plants collected in the Brazilian southeast region, to identify plant extracts with antibacterial properties against Aeromonas hydrophila, Bacillus subtilis, Pseudomonas aeruginosa and Staphylococcus aureus. Initially, the agar diffusion method was employed. Then, those extracts presenting activity were submitted to a broth microdilution assay to determine the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). It was observed that 13 of the tested extracts showed antibacterial activity. The best results were obtained with those from Lantana lilacina and Phyllanthus tenellus. 相似文献
3.
Ramesh N Viswanathan MB Saraswathy A Balakrishna K Brindha P Lakshmanaperumalsamy P 《Fitoterapia》2002,73(2):160-164
The aqueous, methanol, chloroform and hexane extracts of Swertia corymbosa were tested (in vitro) for their antimicrobial efficiency. Maximum inhibitory activity was noticed against Staphylococcus aureus and Salmonella typhi. 相似文献
4.
喜树叶提取物的抗菌活性研究 总被引：1，自引：0，他引：1
采用滤纸片法研究喜树叶乙醇提取物和水提物对金黄色葡萄球茼（Staphylococcus aureus）、大肠杆菌（Escherichia coli）、枯草杆茼（Bacillus subtilis）、八叠球菌（Sarcina ventriculi）、黑曲霉（aspergillus niger）、木霉（Trichoderma virid）和青霉（Penicillium chrysogenum）的抗菌活性。结果表明,喜树叶乙醇提取物和水提物对细菌有明显的抑制作用,浓度越大抑制效果越好;喜树叶乙醇提取物对3种霉菌都有抑茼效果,水提物对霉菌没有抑制作用。 相似文献
5.
Antimicrobial activity of Datura innoxia and Datura stramonium 总被引：1，自引：0，他引：1
The antibacterial activity of the methanol extracts of the aerial parts of the Datura innoxia and Datura stramonium was investigated. The extracts showed activity against Gram (+) bacteria in a dose dependent manner. Little or no antibacterial activity was found against Escherichia coli and Pseudomonas aeruginosa. 相似文献
6.
Effects of Pouteria cambodiana extracts on in vitro immunomodulatory activity of mouse immune system
Immunomodulatory activity of water and acetone extracts of stem bark of Pouteria cambodiana was examined on murine macrophage phagocytosis [nitroblue tetrazolium (NBT) dye reduction and lysosomal enzyme activity] and proliferation of splenocytes and bone marrow cells by 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay with and without lipopolysaccharide (LPS) or pokeweed mitogen (PWM). Both aqueous and acetone extracts presented immunomodulatory activity without clear dose response relationship. 相似文献
7.
Antibacterial spectrum of Hypericum hookerianum. 总被引：1，自引：0，他引：1
The antibacterial activity of the chloroform, acetone and methanol extracts of Hypericum hookerianum leaves and stems was evaluated. All extracts showed antibacterial activity against six different gram-positive and gram-negative bacteria, the methanol extracts exhibiting the maximum inhibitory activity at 400 microg/ml. 相似文献
8.
以苍耳根、茎、叶作为试验材料,以丙酮、80%乙醇、乙酸乙酯、蒸馏水作为提取溶剂,利用滤纸片法研究了苍耳不同器官4种不同溶剂提取液对2种细菌和1种真菌的抑菌活性,结果表明:苍耳各器官的不同溶剂提取液抑菌效果不同。对溶剂来说,苍耳叶丙酮、乙酸乙酯提取液对枯草芽孢杆菌的抑菌圈直径分别达16.32mm、15.66mm,叶的乙酸乙酯提取液对苹果轮纹病菌的抑菌圈直径达15.64mm,4种不同溶剂提取液的总体抑菌活性由大到小依次为丙酮、乙酸乙酯、80%乙醇、蒸馏水;对不同器官来说,苍耳各器官提取液抑菌效果由大到小依次为叶、根、茎,尤以叶的丙酮提取液抑菌效果最佳,乙酸乙酯次之。苍耳叶的丙酮、乙酸乙酯提取液对枯草芽孢杆菌、苹果轮纹病菌均表现为较强的抑菌活性,但对大肠杆菌的抑菌活性较弱。 相似文献
9.
M Rosado-Vallado W Brito-Loeza G J Mena-Rejón E Quintero-Marmol J S Flores-Guido 《Fitoterapia》2000,71(5):570-573
The methanol and water extracts of six Fabaceae species, traditionally used in Mayan medicine for the treatment of diarrhoea and eye infections, were phytochemically screened and tested for in vitro antimicrobial activity. Four species showed activity against Gram positive bacteria, five exhibited some activity against Candida albicans, two exhibited activity against Aspergillus niger and only one, Mimosa pigra, inhibited growth of Pseudomonas aeruginosa. None of the extracts was active against Escherichia coli. 相似文献
10.
The ethanolic extract of Gymnema sylvestre leaves demonstrated antimicrobial activity against Bacillus pumilis, B. subtilis, Pseudomonas aeruginosa and Staphylococcus aureus and inactivity against Proteus vulgaris and Escherichia coli. 相似文献
11.
10-Isobutyryloxy-8,9-epoxythymol isobutyrate was found to be a major constituent of Inula helenium and Inula royleana root cultures. The compound showed moderate antimicrobial activity against Staphylococcus aureus, Enterococcus faecalis, Escherischia coli, Pseudomonas aeruginosa and Candida albicans. 相似文献
12.
Said Fernández S Ramos Guerra MC Mata Cárdenas BD Vargas Villarreal J Villarreal Treviño L 《Fitoterapia》2005,76(5):466-468
The inhabitants of Northeast of Mexico use an infusion of leaves from Artemisia ludoviciana as an antidiarrheal remedy. The aqueous, methanol, acetone and hexane leaf extracts from mature plants were found to be active in vitro against the parasitic protozoa Entamoeba histolytica and Giardia lamblia. 相似文献
13.
The antibacterial activity of the chloroform, acetone and methanol extracts of endemic Hypericum kazdaghensis leaves were evaluated by disc diffusion method. All extracts exhibited antimicrobial activity against all tested bacteria. 相似文献
14.
In vitro evaluation of leishmanicidal activity of aqueous and ethanolic extracts of Maytenus illicifolia against three species of Leishmania. The root extracts showed differential activity against parasites, whereas the aerial part of the extracts was inactive. 相似文献
15.
《Fitoterapia》2014
A phytochemical investigation of the acetone extract from the immature fruits of Garcinia cowa led to the isolation of two novel tetraoxygenated xanthones, garcicowanones A (1) and B (2), together with eight known tetraoxygeanted xanthones. Their structures were determined by spectroscopic analysis. All isolated compounds were evaluated for their antibacterial activity against Bacillus cereus TISTR 688, Bacillus subtilis TISTR 008, Micrococcus luteus TISTR 884, Staphylococcus aureus TISTR 1466, Escherichia coli TISTR 780, Pseudomonas aeruginosa TISTR 781, Salmonella typhimurium TISTR 292 and Staphylococcus epidermidis ATCC 12228. α-Mangostin showed potent activity (MIC 0.25–1 μg/mL) against three Gram–positive strains and garcicowanone A and β-mangostin exhibited strong antibacterial activity against B. cereus with the same MIC values of 0.25 μg/mL. 相似文献
16.
The antimicrobial activity of Bryum argenteum ethanol extracts was evaluated by microdilution method against four bacterial (Escherichia coli, Bacillus subtilis, Micrococcus luteus and Staphilococcus aureus) and four fungal species (Aspergillus niger, Penicillium ochrochloron, Candida albicans and Trichophyton mentagrophyes). All the investigated ethanol extracts have been proved to be active against all bacteria and fungi tested. 相似文献
17.
樟油的提取及其抑菌性研究 总被引：2，自引：0，他引：2
通过蒸馏法从樟树的树根、树枝、鲜叶及落叶中提取樟油,然后将用蒸馏法从落叶中获得的樟油和用丙酮浸提法从落叶中获得的提取物分别配制成不同浓度的水溶液,采用抑菌圈法分别对常见的几种细菌进行抑菌研究,结果表明落叶中的得油率最高,用蒸馏法获得的樟油对大肠杆菌(Escherichia coli)、普通变形杆菌(Proteus vulgaris)、金黄葡萄球菌(Staphylococcus aureus)有一定的抑菌作用,其最低抑菌浓度(MIC)在0.125~0.25 g.mL-1之间,而丙酮浸提液对上述细菌的生长几乎没有抑制作用。 相似文献
18.
The ethanolic extracts of the leaves and flowers of Cleome viscosa and roots of Gmelina asiatica were tested for antimicrobial activity. The two plants exhibited a broad spectrum of antimicrobial activity, particularly significative against Escherichia coli , Proteus vulgaris and Pseudomonas aeruginosa. The leaf extract of C. viscosa showed moderate activity against pathogenic fungi. 相似文献
19.
对混合菌液诱导和非诱导处理的喙尾琵甲幼虫抗菌肽进行了分离纯化及抑菌活性比较。结果显示:诱导组和非诱导组粗提物无抑菌活性,但是经凝胶色谱分离后,从非诱导组获得组分DZP1,对金黄色葡萄球菌、枯草芽孢杆菌表现出抑制作用;从诱导组获得组分YDP1,对金黄色葡萄球菌、枯草芽孢杆菌、绿脓杆菌具有活性,且YDP1活性明显强于DZP1;Tricine-SDS-PAGE检测表明DZP1和YDP1组成、种类基本一致,主要由20 kD以下分子量的小肽组成。研究结果表明:喙尾琵甲幼虫在诱导和非诱导条件下均可分离到具有抑菌活性的抗菌肽,菌液诱导可增强抗菌肽的活性和抑菌谱。 相似文献
20.
Lythrum salicaria extracts showed activity against the phytopathogenic fungus Cladosporium cucumerinum and activity against the bacteria Staphylococcus aureus, Proteus mirabilis and Microccocus luteus. Bioautography on thin-layer chromatograms was used to isolate the two antifungal triterpenoids oleanolic and ursolic acid. The hexahydroxydiphenoyl ester vescalagin was isolated as active principle of the antibacterial activity. Furthermore, the flavon-C-glucosides vitexin, isovitexin, orientin and isoorientin were isolated. 相似文献