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Articles by S.M. Seyyednejad
Total Records ( 9 ) for S.M. Seyyednejad
  S.M. Seyyednejad , S. Maleki , N. Mirzaei Damab and H. Motamedi
  The antibacterial activity of parsley (Petroselinum crispum) and Prunus mahaleb seed ethanolic extracts were examined using agar disc diffusion method against eleven bacteria (Bacillus anthracis, Bacillus subtilis, Bacillus pumilus, Staphylococcus aureus, Bacillus licheniformis, Brucella melitensis, Escherichia coli,Salmonella typhi, Proteus mirabilis, Bordetella bronshiseptica, Pseudomonas aeruginosa). These extracts had inhibitory effect at various concentrations (0.1, 0.2, 0.3 and 0.4 g mL-1) against Gram-positive and Gram-negative bacteria. Prunus mahaleb ethanolic extract had antibacterial activity against P. mirabilis, B. anthracis and S. aureus. B. licheniformis was the most sensitive organism to the parsley ethanolic extract. Both of the extracts had inhibitory effect against Br. melitensis, E. coli and B. licheniformis in low concentrations (0.1 and 0.2 g mL-1). Based on the results of this study, both plants could be considered as disinfectants or antiseptics, thus confirming their use in folk medicine.
  H. Motamedi , A. Safary , S. Maleki and S.M. Seyyednejad
  The antibacterial activity of Ziziphus spina-christi leaves ethanolic and methanolic extracts were examined using agar disc diffusion method against eight bacteria (Salmonella typhi, Proteus mirabilis, Shigella dysenteriae, Escherichia coli, Klebsiella pneumoniae, Brucella melitensis, Bordetella bronshiseptica and Pseudomonas aeruginosa). These extracts had inhibitory effect at various concentrations (0.05, 0.1, 0.2, 0.3 and 0.4 g mL-1) against tested bacteria. The ethanolic extract had the highest activity (20 mm) against B. bronchiseptica while the lowest activity (7 mm) was demonstrated by the methanolic extract on K. pneumoniae. Studies on the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of the methanolic extract on two selected bacteria showed that the S. dysenteriae had the highest MIC (18 mg mL-1) and MBC (64 mg mL-1) values.
  S.M. Seyyednejad , M. Niknejad and M. Yusefi
  In this study the main purpose is to study on some biological factors of a deciduous tree species Callistemon citrinus in polluted and high temperature condition in South of Iran. The location was selected because of high rate of industrial pollution that is caused by petrochemical companies. Callistemon citrinus, family Mirtaceae, is a kind of evergreen tree with alternate, linear leaf. The type and margin of leaves are simple and entire, round brown fruits with hard or dry cover and red flowers. The common name of C. citrinus is red bottlebrush that is describe it’s flowers shape. The concentrations of chlorophyll A, B total chlorophyll, carotenoieed, soluble sugar, proline and morphological effects were examined in the leaves of tree species, growing in polluted area as compare to unpolluted condition. In the polluted regions higher concentrations of soluble carbohydrate, proline, chlorophyll A, B, carotenoieed were observed in comparison with trees in the unpolluted regions. The morphological characters affected by stress of pollution. Characters such as leaf area, length and breadth of blade, showed decrease.
  A. Safary , H. Motamedi , S. Maleki and S.M. Seyyednejad
  The antibacterial activity of Q. brantii fruits ethanolic and methanolic extracts were examined using agar disc diffusion method against eight bacteria (Salmonella typhi, Proteus mirabilis, Shigella dysenteriae, Escherichia coli, Klebsiella pneumoniae, Brucella melitensis, Bordetella bronchiseptica, Pseudomonas aeruginosa). These extracts had inhibitory effect at various concentrations (0.5, 0.1, 0.2, 0.3 and 0.4 g mL-1) against tested bacteria. The ethanolic extract had the highest activity (30 mm) against Br. melitensis and B. bronchiseptica while the lowest activity (7 mm) was demonstrated by the methanolic extract on E. coli. Studies on the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of the methanolic extract on tested microorganisms showed that the highest MIC (20 mg mL-1) and MBC (32 mg mL-1) were demonstrated against Sh. dysenteriae, B. bronchiseptica and P. mirabilis had the highest MIC and MBC values (32 mg mL-1) for the ethanolic extract.
  S.M. Seyyednejad and H. Motamedi
  not available
  M. Kolahi , B. Peivastegan , I. Hadizadeh and S.M. Seyyednejad
  In this study, phytotoxicity of rice hull extracts (Oryza sativa L.) on wild oat (Avena ludoviciana Durieu) was investigated. Hull extracts from 13 cultivated rice cultivars (Oryza sativa L.) were used to determine their allelopathic potential on seed germination and seedling growth of wild oat (Avena ludoviciana Durieu). The allelopathic effects of water hull extracts from selected cultivars were investigated. In the screening the Red anbarbo extract inhibited germination 24% very closely fallowed Daniyal is 27%. Seedling growth bioassays demonstrated that the wild-oat (Avena ludoviciana Durieu) responded differently to the allelopathic potential of rice. For wild-oat (Avena ludoviciana Durieu) shoot length and germination were more depressed than root length. Some hulls extracts including Champa, Sahel almost didn’t affect root length. The greatest total seedling length inhibition was from the Daniyal extracts. Extract of rice hulls significantly reduced roots length of wild oat. Extracts of Daniyal reduced root length of wild oat by 2.19 cm. This cultivar have the highest inhibitory on root length of wild oat. These results suggest that rice hull extracts may be a source of natural herbicide. There may be genetic differences among rice cultivars for allelopathic potential on Wild-oat. The breeding of rice cultivars with greater allelopathic potential may be possible.
  S.M. Seyyednejad , M. Niknejad and M. Yusefi
  The main purpose of this study is to determine some physiological and morphological characters of Albizia lebbek grown in high temperature condition of Khuzestan in Iran. The location was selected because of high rate of industrial pollution that is caused by petrochemical companies. Albizia lebbeck Benth. is a deciduous tree with compound leaves, flat oblong fruits, round cream colored seeds, grows wild and planted in almost south of Iran. The plant is found throughout tropical and subtropical Asia and Africa. The concentrations of chlorophyll A, B total chlorophyll, carotenoid, soluble sugar, proline and morphological effects were examined in the leaves of tree species (Albizia lebeck), growing in polluted area in comparison with natural condition. In the polluted regions higher concentrations of soluble carbohydrate, proline, chlorophyl A, B, carotenoid were observed in comparison with trees in the unpolluted regions. The morphological characters such as leaf area showed decrease.
  S. Maleki , S.M. Seyyednejad , N. Mirzaie Damabi and H. Motamedi
  The aim of this study was to examine the antimicrobial activity of the methanolic extract of Torilis leptophylla was tested on eleven bacteria (Bacillus anthracis, Bacillus subtilis, Bacillus pumilus, Staphylococcus aureus, Bacillus licheniformis, Brucella melitensis, Escherichia coli, Salmonella typhi, Proteus mirabilis, Bordetella bronshiseptica and Pseudomonas aeruginosa). Tested extract was effective against all bacteria but not B. subtilis. Consequently, the ethanolic extract had antibacterial activity on some pathogens thus confirming their use in folk medicine.
  S.M. Seyyednejad , M. Niknejad and H. Koochak
  not available
 
 
 
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