共查询到20条相似文献，搜索用时 31 毫秒
1.
The leaves, stem bark, stem heart wood, root and tubers of Angiopteris evecta were successively extracted with petrol, dichloromethane, ethyl acetate, butanol and methanol. All the fractions exhibited a wider spectrum of antibacterial activity. The dichloromethane and ethyl acetate fractions of the leaves and stem bark were particularly good and were the only fractions exhibiting antifungal activity. All fractions of the tuber with the exception of petrol, exhibited very good antibacterial activity. 相似文献
2.
The methanolic extracts and the fractions (petrol, dichloromethane, ethyl acetate, butanol) obtained from the leaves, seeds, stem and root barks of Sarcocephalus coadunatus exhibited a high level of broad spectrum antibacterial activity. The activity was more pronounced in the dichloromethane, ethyl acetate and butanol fractions of the leaves; ethyl acetate and butanol fractions of the seeds; dichloromethane fractions of the stem bark and the ethyl acetate fractions of the root bark. None of the fractions showed any antifungal activity. 相似文献
3.
The Breynia cernua leaves, stem and root barks and heart-woods extracted with petrol, dichloromethane, ethyl acetate, butanol and methanol gave fractions with varied level of antimicrobial activity. The best activity was exhibited by the methanol extract of the root bark followed by its butanol fraction. These were the only fractions exhibiting a good level of antifungal activity as compared to the standard. The dichloromethane fraction of the stem bark also demonstrated good activity. 相似文献
4.
Antibacterial activity of Alstonia scholaris and Leea tetramera 总被引：4，自引：0，他引：4
The crude methanolic extracts of the leaves, stem and root barks of Alstonia scholaris and Leea tetramera on partitioning (petrol, dichloromethane, ethyl acetate, butanol) gave fractions exhibiting improved and broader spectrum of antibacterial activity. Especially the butanol fractions of A. scholaris and the root bark of L. tetramera. None of the fractions were active against the fungi tested. 相似文献
5.
All fractions of Maniltoa schefferi exhibited a broad spectrum of antibacterial activity. Good activity was demonstrated by the petrol and dichloromethane fractions of seed pods, seeds with coat and by methanol fractions of stem heartwood, root bark, root heartwood and stem bark whose butanol fraction was equally good. None of the fractions showed any antifungal activity. 相似文献
6.
The leaves, root and stem barks of Pterocarpus indicus were successively partitioned with petrol, dichloromethane, ethyl acetate, butanol and methanol. All the fractions exhibited a wide spectrum of antibacterial activity. The activity was more pronounced in the butanol and methanol fractions. None were active against the moulds. 相似文献
7.
The methanol extracts of Harpullia petiolaris, leaves, stem and root barks and heartwoods were fractionated into petrol, dichloromethane, ethyl acetate and butanol. All fractions exhibited antibacterial activity. 相似文献
8.
Antibacterial activity of Picrasma javanica 总被引：1，自引：0，他引：1
The methanol extracts of Picrasma javanica, leaves, seeds, stem and root barks were partitioned (petrol, dichloromethane, ethyl acetate, butanol). All obtained extracts and fractions showed a broad spectrum of antibacterial activity, while none was active against the tested moulds. 相似文献
9.
The ethanol extract of leaves of Derris uliginosa given by oral route at dose of 250 and 500 mg/kg produced a significant inhibition on acetic acid-induced writhing in mice. 相似文献
10.
The crude methanolic extracts of the leaves, stem bark, stem heart wood, root bark and root heart wood of Euroschinus papuanus and the fractions obtained on partitioning with petrol, dichloromethane (D), ethyl acetate (E) and butanol (B), exhibited a broad spectrum antibacterial activity. Fractionation drastically enhanced the activity. Excellent activity was demonstrated by the E fractions of stem heart wood, D of root bark, and E of root heart wood. Antifungal activity was exhibited by the B fractions of leaves, stem heartwood and root bark. 相似文献
11.
Antimicrobial activity of Michelia champaca 总被引：5，自引：0，他引：5
The methanol extracts of leaves, seeds, stem and root barks, stem and root heart-woods of Michelia champaca and the obtained fractions (petrol, dichloromethane, ethyl acetate, butanol) exhibited a broad spectrum of antibacterial activity. Fractionation drastically enhanced the level of activity particularly in all fractions of the stem bark and dichloromethane fraction of the root bark. Some fractions of the leaves, stem and root barks demonstrated antifungal activity against some of the tested moulds. Liriodenine was the active constituent of the root bark, with a broader and, in some cases, better level of activity as compared to the standard. 相似文献
12.
Antibacterial and antifungal activities of Dracontomelon dao 总被引：1，自引：0，他引：1
The crude methanolic extracts of the leaves, stem and root barks of Drancantomelon dao and their subsequent partitioning (petrol, dichloromethane, ethyl acetate, butanol) gave fractions which demonstrated a very good level of broad spectrum antibacterial activity. The dichloromethane and butanol fractions of the leaf were the most active. Only the leaf fractions had antifungal activity, particularly the dichloromethane and butanol. 相似文献
13.
Antibacterial activity of Artocarpus heterophyllus 总被引：2，自引：0，他引：2
The crude methanolic extracts of the stem and root barks, stem and root heart-wood, leaves, fruits and seeds of Artocarpus heterophyllus and their subsequent partitioning with petrol, dichloromethane, ethyl acetate and butanol gave fractions that exhibited a broad spectrum of antibacterial activity. The butanol fractions of the root bark and fruits were found to be the most active. None of the fractions were active against the fungi tested. 相似文献
14.
Chloroform, ethyl acetate, butanol and methanol extracts of fruit mesocarp of Balanites aegyptiaca and five fractions from the methanol extract were tested against the Aedes aegypti mosquito larvae. All extracts showed larvicidal effects however the highest larval mortality was found in methanol extract. One fraction obtained from the silica gel column chromatography of the latter was found most effective for larval mortality. This fraction also interfered with adult emergence. A concentration of 0.0014% (w/v) of this active fraction showed inhibition of the 50% of the test larval population from emerging adults (EC(50)). The analysis of total saponin content of these tested extracts and fractions revealed a strong correlation between saponin content and larval mortality. 相似文献
15.
The crude methanolic extract of Barringtonia asiatica (leaves, fruits, seeds, stem and root barks) and the fractions (petrol, dichloromethane, ethyl acetate, butanol) exhibited a very good level of broad spectrum antibacterial activity. A number of fractions demonstrated antifungal activity against a number of fungi. 相似文献
16.
A broad spectrum of antibacterial activity was exhibited by the methanol extracts of leaves, root and stem barks of Terminalia complanata and Flacourtia zippelii and their subsequent fractions (petrol, dichloromethane, ethyl acetate). Fractionation enhanced the activity particularly in the ethyl acetate fractions of the stem and root barks of T. complanata. No activity was observed against the moulds. 相似文献
17.
The antioxidant properties of the methanol extract of leaves and flowers of Erica arborea and the ethyl acetate, butanol and water soluble fractions were investigated. The ethyl acetate extract was found to be the richest for phenolic and flavonoid content which showed the highest antioxidant activity. 相似文献
18.
Galeola foliata leaves and stem bark were successively extracted with petrol, dichloromethane, ethyl acetate, butanol and methanol. A broad spectrum antibacterial activity (24 bacteria and protozoan) was exhibited by both parts. A very good level of activity was demonstrated by the CH2Cl2 and EtOAc fractions. None of the fractions were active against the moulds. 相似文献
19.
Antimicrobial activity of Psychotria microlabastra. 总被引：2，自引：0，他引：2
The methanol extracts of leaves, root and stem barks of Psychotria microlabastra showed a broad spectrum of antibacterial activity, that was increased on fractionation (petrol, dichloromethane, ethyl acetate), particularly in the ethyl acetate fractions. None of the extractives showed activity against the tested moulds. 相似文献
20.
The methanol extracts of Harpullia ramiflora, leaves, flowers, stem and root barks were partitioned (petrol, dichloromethane, ethyl acetate). In respect to crude extracts, all fractions demonstrated broader spectrum and higher levels of antibacterial activity. The ethyl acetate fraction of the flowers exhibited the highest activity. No activity was shown against the tested moulds. 相似文献