Papers by Abdalla Mohammed abdalla Mansour
International Journal of Agriculture and Biological Sciences, 2020
Six varieties of wheat (Triticum aestivum L.) Al-Mokhtar, Margawi, ACSAD901, Casy, Karim, and Sal... more Six varieties of wheat (Triticum aestivum L.) Al-Mokhtar, Margawi, ACSAD901, Casy, Karim, and Salampoo were evaluated under 5 drought levels 0, 60, 120, 180 and 240 g/L (0.00 (control),-0.066,-0.201,-0.407,-0.682 MPa). To make drought stress conditions we used polyethylene glycol (PEG6000). Germinated seeds were counted daily for up to 14 days under laboratory conditions. Germination percentage and mean germination time, coefficients of germination, mean germination rate, and germination index as germination parameters. Seedling, shoot and root length; fresh, dry weight of shoot and root, seedling vigor index, and reduction percentage as seedling growth parameters were studied. Germination and growth of wheat seedling were affected significantly by changes in water stress levels between-4 and-8 MPa. Margawi variety had the highest germination percentage (78%) among the six varieties, followed by Karim. The two varieties of Salampoo and Casy showed the longest mean germination time. We also noticed that Margawi variety was the fastest at the average germination rate, followed by Al-Mukhtar, Karim, and ACSAD 901. The studied varieties showed a clear decrease in all the germination criteria studied at the high drought rates (-0.407 and-0.682 MPa). By studying growth parameters, the variety al-Mokhtar followed by ACSAD 901 and Margawi higher in shoot length; ACSAD 901, Margawi, and Al-Mokhtar sequentially in plant length.
Al-Mukhtar Journal of Sciences, 2019
The study aimed to evaluate the bacterial quality of marketed poultry meat in five areas in Bengh... more The study aimed to evaluate the bacterial quality of marketed poultry meat in five areas in Benghazi during the summer season by estimating the number of some evidence of contamination, including the total number of bacteria, coliform bacteria, Staphylococcus aureus and identification of Salmonella. The results showed that the total number of bacteria in all the studied areas on domestic chicken meat was between 3.84 and 7.22, with an average of 6.02 log10CFU/g, and in imported
poultry between 4.49 and 6.73 and an average of 5.94 log10CFU/g. Coliform bacteria was in local chicken meat between 3.5 and 6.80 averaged 5.53 log10CFU/g, and in imported poultry between 3.0 and 6.80 and averaged 5.5 log10CFU/g. Staphylococcus aureus in the five sectors between 4.5 and 7.3 in domestic poultry meat, and in imported poultry meat was between 6.03 and 6.50. Biochemical tests for 22 bacterial isolates found E. coli 40.9%, Citrobacter spp. 18.2%, Klebsiella spp. 13.6%, Salmonella spp 9.1% and Pseudomonas spp 18.2%.
The results of this study indicate that there was a high percentage of contamination in chicken carcasses, especially local chicken carcasses, with pathogenic bacteria which reflect the low health quality of this meat due to the lack of good sanitary procedures during the preparation of chicken carcasses, storage, and display of carcasses when selling.
J. Product. & Dev.,, 2009
Seven fungi have been experimentally screened to get the most active two lipase producers. The ex... more Seven fungi have been experimentally screened to get the most active two lipase producers. The experimental conditions were Czapek’s yeast extract tributyrin emulsion (CYET) liquid medium, incubated at 30 °C &pH 5.0 for 8 days. Classical kinetic technique of enzymatic analysis has been used to study the effect of physical factors (pH, temperature &incubation period). Optimal yield of lipase produced by Aspergillus niger after 8 days of incubation at 30 °C &pH 5.0, while optimal yield of lipase produced by Rhizopus nigricans after 6 days of incubation at 30 °C &pH 6.0 .
J. Product. & Dev., 2010
Fifty nine species belonging to 23 genera were obtained from 100 soil samples collected from the ... more Fifty nine species belonging to 23 genera were obtained from 100 soil samples collected from the eastern region in Libya. The most common genera and their species were Aspergillus (11 species), Cladosporium (5 species), Fusarium (5 species), Penicillium (10 species), and Rhizopus (1 species). The most abundant species were: Alternaria alternata, Aspergillus flavus, A. fumigatus, A. niger, A. ochraceus, A. Terreus, A. ustus, Cladosporium cladosporioides, Fusarium moniliforme, F. oxysporum, Penicillium chrysogenum, P. citrinum, Pleospora herbarum, and Rhizopus stolonifer.
Pelagia Research Library, 2014
The human impacts and their effects on plant vegetation and biodiversity became a field of major ... more The human impacts and their effects on plant vegetation and biodiversity became a field of major interest in the last few years. many of human activities occurred in AL-jabal AL-akhdar area as result of increase of development activities and growth of population. The present investigation was carried out to study the flora and vegetation composition of coastal region of AL-jabal AL-akhdar area and the effects of human impacts on the vegetation composition. The results showed that 104 plant species belonging to 37 families were found. On the family level, both Fabaceae and Asteraceae were the major plant families in the area with 16 and 15 species, respectively. The annuals form the huge number of the plants(64.4%), while other life forms of the biological spectrum appeared in different percentages. Negative interactions between human activities (land abuse, charcoal burning, overgrazing…etc.) and vegetation were noticed among the study site. We discussed the relationship between flora and vegetation composition and the role of human activity which cause disturbance for the vegetation cover of the study area.
Libyan Journal of Basic Sciences (LJBS), 2019
The study was conducted on beef meat to determine the total bacteria counts (TBC), the total coli... more The study was conducted on beef meat to determine the total bacteria counts (TBC), the total coliform counts (TCC), total staphylococcus counts (TSC) and salmonella in Benghazi markets. The city was divided into five sectors (A, B, C, D and E). The results showed that the average number of bacteria (TBC) in each sector was 6.0, 6.53, 4.41, 5.42 and 6.53 log 10 CFU/g, respectively. The highest average of total bacteria count was recorded in sector E (6.53 log 10 CFU/g). While, the lowest number TBC was in sector C (4.41 log 10 CFU/g). The average of coliform counts were 5.5, 5.0, 4.83, 4.79 and 5.07 log 10 CFU/g, for each sector, respectively. Whereas, the highest average of coliform count was recorded in sector A and the lowest average was in sector D. Examination of samples showed that Staphylococcus aureus found in all sectors between (4.3-6.2 log 10 CFU/g). In same context, laboratory studies reported that Salmonella appeared in sector D. A number of bacterial strains have been identified as: E. coli, Enterobacter spp., Citrobacter spp., Klebsiella spp., Proteus spp., Pseudomonas spp. and Salmonella spp. According to the Libyan Standards, the results exhibited that 60 % of TBC were satisfactory, while, 30 % acceptable and 10 % unsatisfactory. Due to inappropriate practices and traditions of not observing health requirements and lack of scientific methods for dealing with meat in butcher shops and in the slaughterhouses, all samples were contaminated with E. coli and Staphylococcus aureus.
International Journal of Agricultural Science, 2019
The study was conducted to evaluate the bacteriological contamination (total bacteria counts (TBC... more The study was conducted to evaluate the bacteriological contamination (total bacteria counts (TBC), total coliform counts (TCC), total staphylococcus counts (TSC) and Salmonella) of mutton in meat shops in Benghazi city, northeast of Libya, where the city was divided into five sectors (A, B, C, D, and E). The investigation in the sector (A) showed that the highest average of TBC in local and imported meat was (7.99 and 7.19 log10CFU/g) respectively, which was a statistically non-significant difference (P ≤ 0.05). The experiment reported that the lowest average of TCB in local meat was a non-significant difference (P ≤ 0.05), which was in the sectors (C&D) (5.78 and 5.64 log10CFU/g) respectively. Coliform bacteria, the results showed a significant difference (P ≤ 0.05) between local and imported sheep meat in all sectors (7.15, 6.78, 6.26, 6.48, 5.11, 4.46, 4.41, 4.43, 6.01, 6.30 log10CFU/g) respectively. On the other hand, Staphylococcus aureus was a significant difference (P ≤ 0.05) between local and imported sheep meat in all sectors. Whereas, the sectors (A) local meat and (B) imported meat exhibited that the highest average of TSC was (6.87 and 6.97) respectively. The biochemical test showed numbers of bacterial species: E. coli, Enterobacter spp., Citrobacter spp., Klebsiella spp., Proteus spp., Pseudomonas spp., Salmonella spp. Salmonella bacteria have appeared in 5.7% of isolates in Sector B. Accordance with the FAO and Libyan standards, the study reported that 40% of the studied samples were below the microbial limit, while 60% of the samples exceeded the maximum limit. From the results, the researcher concludes that there is a weakness in the application of sanitary procedures in meat shops and slaughterhouses in the city of Benghazi.
Conference Presentations by Abdalla Mohammed abdalla Mansour
Seed germination of three varieties of Wheat (Triticum aestivum L.) CONDOR, SERI and T.R. evaluat... more Seed germination of three varieties of Wheat (Triticum aestivum L.) CONDOR, SERI and T.R. evaluated under 5 drought levels (0.0 mPa (control),-0.3 mPa,-0.6 mPa,-0.9 mPa and-1.2 mPa). We used polyethylene glycol (PEG6000) to make drought stress conditions. Germinated seeds were counted daily up to 14 days under laboratory conditions. Percentage and mean germination time, coefficients of germination, mean germination rate, and uncertainty of germination process as germination parameters. Shoots and roots length; fresh, dry weight of shoots and roots, leaves and roots number, surface area of leaves as seedling growth parameters were studied. The data was analyzed statistically using SPSS software, to identify significant difference among wheat varieties and among treatment. Comparison between means showed that the highest value for most of germination parameters recorded for SERI variety followed by T.R., and most of seedling growth parameters were recorded for T.R. followed by SERI. The results determined that seeds of all varieties germinate well in the lowest concentration of PEG. Increase the concentration of PEG affect all germination and seedling growth parameters.
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Papers by Abdalla Mohammed abdalla Mansour
poultry between 4.49 and 6.73 and an average of 5.94 log10CFU/g. Coliform bacteria was in local chicken meat between 3.5 and 6.80 averaged 5.53 log10CFU/g, and in imported poultry between 3.0 and 6.80 and averaged 5.5 log10CFU/g. Staphylococcus aureus in the five sectors between 4.5 and 7.3 in domestic poultry meat, and in imported poultry meat was between 6.03 and 6.50. Biochemical tests for 22 bacterial isolates found E. coli 40.9%, Citrobacter spp. 18.2%, Klebsiella spp. 13.6%, Salmonella spp 9.1% and Pseudomonas spp 18.2%.
The results of this study indicate that there was a high percentage of contamination in chicken carcasses, especially local chicken carcasses, with pathogenic bacteria which reflect the low health quality of this meat due to the lack of good sanitary procedures during the preparation of chicken carcasses, storage, and display of carcasses when selling.
Conference Presentations by Abdalla Mohammed abdalla Mansour