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Articles by E. Baldev
Total Records ( 3 ) for E. Baldev
  M. Leo Antony , D. Mubarak Ali , E. Baldev , D. Pandiaraj , R. Praveen Kumar and N. Thajuddin
  Fungi present in indoor environment always create serious health risks for the individual dwellers. The present study was focused on the enumeration of fungal contaminants in the newly constructed lab. Totally 8 different fungi were isolated from the indoor environment by using sedimentation culture plate method. The isolated species were identified conventionally, as well as using the sequence homology of internal transcribed spacer regions. This ribosomal non-coding unit sequence based analysis is the most popular locus for species identification and to study the phylogenetic variation. The fungal species isolated and described are already found to be reported as pathogens present in indoor air. Based on the sequences obtained, phylogenetic tree was constructed using both maximum likelihood and distance matrix depicts that the distance method using ClustalW2 offers better resolution and relates the related genera. The study reveals the methodology in fungal taxonomy and also for environmental monitoring of fungi.
  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.
  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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