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Articles by D. MubarakAli
Total Records ( 6 ) for D. MubarakAli
  D. MubarakAli and N. Thajuddin
  Extension education is an important step for the sustainable development of human welfare based on the socioeconomic and other important circumstances. This education must adapt to technology transfer procedure in terms of lab-to-land conversion without affecting the wild or common procedures. Many factors which affects the dynamic extension education in order to transfer technology in India are found to be poor literacy, communication, economic status, availability and adoptability and private and government sectors. This review papers addresses the factors which affecting extension education agents in technology transfer in India with special reference to lab-to-land (agriculture) phenomena. It has been provided important effective measures and ideas for better technology transfer procedure and sustainable development of human welfare.
  A. Ilavarasi , D. Mubarakali , R. Praveenkumar , E. Baldev and N. Thajuddin
  In recent decades, microalgae have acquired attention from pharmaceuticals to biofuels. The growth and total chorophyll content of three economically important microalgae (Chlorella sp. NTAI01, Monoraphidium sp. NTAI02 and Scenedesmus sp. NTAI03) isolated from fresh water body in five selected culture media on different days of incubation was studied for biomass production. Biomass feedstock has reviewed great interest to be used as an alternative and renewable source of energy. All the three organisms showed varied growth pattern and total chlorophyll content in different culture media. However the growth and total chlorophyll content of Chlorella sp. NTAI01 and Monoraphidium sp. NTAI02 was optimum in Half strength Chu 10 medium. In case of Scenedesmus sp. NTAI03 the growth and total chlorophyll content was found to be significant in Bold’s Basal medium. The Acidified Bold’s Basal medium and BG-11 medium fairly supports the growth of all the three microalgae whereas the Modified Hoagland’s medium does not support the microalgal growth. The optimized growth medium will be used for biomass production for biofuel application.
  K. Kannan , D. Vijayan , D. MubarakAli , R. Praveenkumar , A. Parveez Ahamed and N. Thajuddin
  Azolla-Anabaena symbiosis is one of the vital roles in the field of agriculture and development. Both the associates have mutualistic relationship and work together for carbon and nitrogen fixation to soil. The present study is to investigate the new entity in the relationship between the Azolla and Cyanobacteria. Endophytic and Epiphytic cyanobacterial associates were isolated from different Azolla sp. viz., Azolla pinnata, Azolla caroliana and Azolla filliculoides. The isolates were further characterized by conventional methods and molecular techniques. A novel entity, Westiellopsis was found in the association with Azolla filiculoides comparatively with previously reported. Furthermore, Anabaena variabilis precluded from Azolla filiculoides was produce red color pigmentation. The C-Phycoerythrin content of the isolated cyanobacterial symbiont was measured by absorption and fluorescence emission spectroscopy. The nutritional optimization was done showed two fold increased in pigment production than the control.
  D. MubarakAli , M.I. Mohammed Ershath and N. Thajuddin
  An exploration of the microalgal biodiversity from different epiphytes and substrates of pool water in temple at Tiruchirappalli District was studied. Totally ten epiphytic forms were selected for this investigation. In that, totally 44 species of 30 genera belonging to 3 families of the Chlorophyceae, Cyanophyceae (heterocystous and non-heterocystous) and Bacillariophyceae were identified and recorded. The dominant species in this environment were Cyanobacteria (Chroococcus sp. and Oscillatoria sp., Phormidium sp.), Green algae (Tetradron sp. and Scenedesmus sp.) and Diatom (Fragilaria sp. and Navicula sp.) were documented. The molecular taxonomy of cyanobacteria were also analyzed, in this regards, DNA was extracted; 16S rDNA gene was amplified and sequenced. The evolutionary relationship was found in the epiphytic microalgae by Neighbour-Joining method by construction of phylogenetic tree.
  A. Ilavarasi , D. Pandiaraj , D. MubarakAli , M.H. Mohammed Ilyas and N. Thajuddin
  Microalgal species are known to have pigments in their cellular constitute at the maximum and are valuable bioactive products. In the present study focused was on the evaluation of efficient extraction methods for photosynthetic pigments from microalgal species. They are, Chlorella sp., Acrochaete sp., Phormidium chlorinum, Jaaginema pseudogeminatum and Chroococcus sp. There are four different extraction methods were adopted for active recovery and are economically feasible such as direct extraction, mechanical grinding, heating and preheated solvent method. It was found that mechanical grinding method has extract two fold increased amount than the other methods. Additionally, this methods is inexpensive, less laborious and active extraction. It is suggested that this method could be used for the extraction of photosynthetic pigments from microalgae for pharmaceutical to biotechnological purpose.
  E. Baldev , D. MubarakAli , R. Shriraman , D. Pandiaraj , N.S. Alharbi and N. Thajuddin
  The present study focused on the extraction of cyanobacterial exopolysaccharides and their utilization as a bioflocculant. A cyanobacterium, Phormidium sp., was chosen based on the production of Extracellular Polymeric Substances (EPS). Later it was identified as Phormidium persicinum by 16S rDNA gene sequence and sequences were deposited in GenBank with accession number KC 859032. EPS was extracted from this strain using standard precipitation method. It was found that EPS production was maximum at late log phase of cyanobacterial growth (20 days). HPLC analysis revealed that presence of sucrose as a major component in the extracted EPS. Interestingly, the extracted EPS was found to be a good bioflocculant even at very low concentration (10 mg L-1). Cyanobacterial based EPS showed potential bioflocculation which can be directly utilized for the water purification and refining processes.
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