Antimicrobial activity of Cassia alata.   总被引：2，自引：0，他引：2  

M R Khan  M Kihara  A D Omoloso 《Fitoterapia》2001,72(5):561-564

The methanol extracts of leaves, flowers, stem and root barks of Cassia alata showed a broad spectrum of antibacterial activity. The activity was increased on fractionation (petrol, dichloromethane, ethyl acetate), the dichloromethane fraction of the flower extract being the most effective. No activity was shown against tested moulds.  相似文献   

Antidiarrhoeal activity of the bark extract of Careya arborea Roxb     

Rahman MT  Khan OF  Saha S  Alimuzzaman M 《Fitoterapia》2003,74(1-2):116-118

The methanol extract of the Careya arborea Roxb. bark significantly reduced castor oil-induced diarrhoea in mice. This effect supports the local traditional use of the plant against diarrhoea.  相似文献   

Alkaloids of Zanthoxylum budrunga     

Ahmad MU  Rahman MA  Huq E  Chowdhury R 《Fitoterapia》2003,74(1-2):191-193

Pseudophrynamine, lunacridine and the new compound 2-(2',4',6'-trimethyl-heptenyl)-4-quinozolone were isolated from the leaves of Zanthoxylum budrunga.  相似文献   

Development of Melampsora ciliata rust on nursery‐grown poplars in north‐western Himalayas     

R. C. Sharma  Y. Khan  S. Sharma  R. Malhotra 《Forest Pathology》2001,31(5):313-319

Development of leaf rust (Melampsora ciliata) in different species, hybrids and cultivars of poplar (Populus spp.) was studied in nursery‐grown plants. Five different criteria were used to assess the disease development. The mean disease index on 10 August was 9.4% which increased to 70.0% on 10 October. The lowest disease index (5.5%) was recorded in P. yunnanensis whereas the maximum was recorded in P. × euramericana‘Rubra‐Poiret’ (59.5%). The apparent infection rate per unit per day was highest in P. nigra × P. trichocarpa (9.7 × 10^–2) whereas the minimum occurred in P. maximowiczii × P. berolinensis‘Oxford’ (3.3 × 10^–2). The area under the disease progress curve was a maximum in P. × euramericana‘Rubra‐Poiret’ (26.7) and a minimum in P. yunnanensis (1.6). Complete defoliation by the first half of October occurred in P. nigra × P. trichocarpa, which also had the maximum apparent infection rate and area under the disease progress curve. Inoculum production was highest in P. nigra × P. trichocarpa and lowest in P. maximowiczii × P. berolinensis‘Oxford’.  相似文献   

Antinociceptive diterpene from Euphorbia decipiens     

Ahmad VU  Hussain H  Bukhari IA  Hussain J  Jassbi AR  Dar A 《Fitoterapia》2005,76(2):230-232

One myrsinol-type diterpene ester (1) isolated from Euphorbia decipiens was evaluated for analgesic activity in the acetic acid induced writhing test in mice. Different dose (5-20 mg/kg i.p.) of the compound showed significant antinociceptive activity, which was comparable to standard analgesic drugs, aspirin and ibuprofen (100 mg/kg i.p.).  相似文献   

Invasion von Vorratsschädlingen durch Verschlüsse     

Khan  M. A. 《Journal of pest science》1983,56(5):91-94

Journal of Pest Science - Resistance of common packages of the brands ‘Schokini’, ‘Contessa’, ‘Hausgebackeness’, ‘Florentiner’ and...  相似文献   

Seasonal population dynamics of Typhlodromus pyri Scheuten (Acari, Phytoseiidae) in apple orchards in the region Meckenheim     

I. A. Khan  M. Fent 《Journal of pest science》2005,78(1):1-6

Typhlodromus pyri Scheuten (Acari, Phytoseiidae) has been reported as the most important predator of the European red mite, Panonychus ulmi (Koch) (Acari, Tetranychidae) in apple culture. However, biological data on T. pyri was insufficient on important parameters like seasonal population dynamics and within-tree and on-leaf distribution in apple orchards in the region of Meckenheim, Germany. The purpose of the present work was, therefore, to obtain experimental data on these parameters of T. pyri from 2000 to 2002 in the apple orchards in this region. The results showed that overwintered females of T. pyri reactivate and start laying eggs between late March and early April. The mean daily number of the different stages of T. pyri per leaf peaked in July each year, where it ranged between 0.92–1.68 eggs, 0.81–1.41 nymphs, 0.64–1.32 females and 0.37–0.52 males. A significantly higher number of T. pyri individuals congregated in the bottom layer of trees (0.34–0.64 individuals/leaf) than in the middle and top layers (0.23–0.38 and 0.12–0.23 individuals/leaf, respectively). We found that 91.4–94.1% of the total eggs, 89.6–91.7% larvae, 73.0–76.5% nymphs, 60.5–64.6% adult females and 52.6–55.9% adult males concentrated their activities in the inner area of the leaf surface. More than 50% of the predatory mites congregated in the bottom layer in winter. Mean total density of the overwintering females in December of 2000,2001 and 2002 ranged between 10.6–14.2 females/5 cm twig in the bottom, 7.3–10.4 in the middle and 4.1–6.9 in the top layers of the apple trees. Mean total fecundity recorded over the 3 years was lowest in the overwintering generation with 31.8–37.6 eggs/female, highest in the June generation with 45.9–53.7 eggs/female, and intermediate in the August generation with 41.5–46.1 eggs/female. The overwintering generation was composed entirely of females, while the female to male ratio in the June generation was 2:1, and in the August generation 3:1. T. pyri overwinters as adult females in rough structures, cracks and crevices of twigs.  相似文献   

Antibacterial activity of Artocarpus heterophyllus   总被引：2，自引：0，他引：2  

Khan MR  Omoloso AD  Kihara M 《Fitoterapia》2003,74(5):501-505

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   

1-(3-Hydroxy-4-methoxy-5-methylphenyl) ethanone, a new compound from the stem bark of Lamprothamnus zanguebaricus     

Khan MR  Rutaihwa DS  Mhehe GL 《Fitoterapia》2003,74(7-8):741-742

The chloroform extract of the stem bark of Lamprothamnus zanguebaricus has yielded two ethanones; 1-(3-hydroxy-4-methoxy-5-methylphenyl)ethanone (I) (a new compound) and 1-(3-hydroxy-4-methoxyphenyl)ethanone (II). The structures of both compounds were established by spectroscopic methods.  相似文献   

Coumarins from the aerial part of Halocnemum strobilaceum     

Miftakhova AF  Burasheva GS  Abilov ZA  Ahmad VU  Zahid M 《Fitoterapia》2001,72(3):319-321

Four known coumarins, coumarin (1), 7-hydroxy-3-methylcoumarin (2), oreoselone (3) and heraclenin (4), were isolated from aerial part of Halocnemum strobilaceum. Their structures were determined by 1 and 2-D NMR techniques.  相似文献