Version-1 (Sep-Oct 2015)
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| Paper Type | : | Research Paper |
| Title | : | Studies on Biosorption of Different Metals by Isolates of Aspergillus Species |
| Country | : | India |
| Authors | : | Ratnasri P.V || Hemalatha K.P.J |
Abstract: Bioremediation of heavy metal pollution remains a major challenge in environmental biotechnology. Industrial effluents loaded with heavy metals are a cause of hazard to humans and other forms of life. In this present study the Aspergillus species, Aspergillus fumigatus (MTCC Acc. No 1399) and Aspergillus tubingensis (MTCC Acc. No 1398) were tested for metal sorption capacity. Maximum biosorption was observed with mercuric chloride [HgCl2] by A.fumigatus (85.34%) and Cobalt chloride [CoCl2] (73.05%) by A.tubingensis. The FTIR analysis indicated the broad and strong bands at 3500 to 3000cm-1which can be attributed to overlapping of –OH and –NH stretching. The band at 2900 attributed the C-H, at 1620 to 1590cm-1 due to the C=O, and amide groups, at 1400 cm-1 N-H bending in the amine groups, at 1025 cm-1 to CO stretching of alcohols and carboxylic acids. Thus the A.fumigatus and A.tubingensis biomass contain hydroxyl, carboxyl and amine groups on their surface.
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| Paper Type | : | Research Paper |
| Title | : | Evaluation of the Anti-malarial effect of the methanolic leaf extract of Vernonia glaberrima (Asteraceae) |
| Country | : | Nigeria |
| Authors | : | M. I. Abdullahi || A. Uba || A. Yunusa || H. A. Kaita || A. H. Yaro || S. Hassan || A. M. Alhassan || A. Umar || S. S. Bello || I. Nasir || Z. Y. Y. Ibrahim || C. O. Alebiosu || A. J. Yusuf |
Abstract: The emergence of drug-resistant strains has compromised the efficacy of several anti-malarial drugs, including the artemisinins. Many species of Vernonia, family Asteraceae, have been employed in traditional medicine for the management of diabetes mellitus, microbial infections and malaria. The anti-malarial effect of the methanolic leaf extract of Vernonia glaberrima was investigated using Chloroquine-sensitive Plasmodium berghei (NK65) infected mice, according to Riley and Peters curative test model. Three test groups of mice were orally administered with the suspension of the graded doses of the extract at 300, 150 and 75 mg/Kg body weight for four consecutive days; a reference drug, Chloroquine phosphate (5mg/Kg) group, and the negative control group (0.2ml distilled water) were similarly administered. The level of chemo-suppression obtained on the eighth day was a function of the reduction in parasitemia as estimated from the mice tail blood smear.
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| Paper Type | : | Research Paper |
| Title | : | Determination of butylated tin species in biota samples by derivatization and GC-MS analysis |
| Country | : | Nigeria |
| Authors | : | Abdulmumin A. Nuhu || Mohsen A. Al-shatri |
Abstract: Tributyltin and its degradation products were determined in ten species of biota collected from the Eastern Province of Saudi Arabia. Following digestion of the samples with acetonitrile, liquid-liquid extraction was performed and the extract was analyzed on GC-MS system after derivatization of the polar analytes. The method has good linearity in the concentration range of 0.05-10 μg/g wet weight. Limits of detection at signal-to-noise ratio of three (S/N = 3) for this analysis ranged between 9.3 and 12.9 ng/g wet weight. Precision (%RSD) for three determinations was 10-13%. Results indicated that both TBT and DBT were found in all species while MBT was only present in Indian Mackerel, Solea and Barracuda fish. In each biota sample, the total of the three organotin species averaged 8.21 μg/g wet weight with trivially fish having the highest value of 11.73 μg/g wet weight, and Emperor fish recording the lowest value of 4.085μg/g wet weight.
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| Paper Type | : | Research Paper |
| Title | : | In Silico Analysisof Constitutive dicot TubulinGene Promoter |
| Country | : | Pakistan |
| Authors | : | Hira Mubeen || Muhammad Waseem Shoaib || Sadaf Shoaib || Saima Jabeen || Shahid Raza |
Abstract: Gene transformation is a valuable application used to introduce foreign genes into plants. The expression of transgenes is regulated by the promoter attached upstream to the gene. Promoters are non coding DNA sequences which occur upstream of the coding region of gene. They are transcription control modules that control overall expression profile of the gene. A variety of promoters is necessary at all levels of genetic engineering in plants from basic research to the development of economically viable crops and plant commodities.Plant gene promoters are categorized into constitutive, inducible, tissue-specific and synthetic/ hybrid promoters.
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