January 2015
Significance of Archaea in terrestrial biogeochemical cycles and global climate change
Our understanding of the role of archaea, and their significance, in the biosphere has changed substantially with recent advances in molecular techniques. Large numbers of environmental rRNA gene sequences currently flooding into GenBank illustrates that, archaea are ubiquitous and sometimes quantitatively abundant in the environment. Their importance in carbon (C) and nitrogen (N) turnover in marine ecosystems and...
January 2015
Optimization of agroindustrial medium for the production of carotenoids by wild yeast Sporidiobolus pararoseus
This study addresses the optimization of agroindustrial medium used to obtain carotenoids with the wild yeast, Sporidiobolus pararoseus. The optimal condition for the production of total carotenoids was achieved in 168 h obtaining 779.60 µg/L (65.64 µg/g) with 30 g/L of raw glycerol (from the synthesis of biodiesel) and 52.9 g/L of corn steep liquor at 25°C and 180 rpm. The formulation of another culture...
January 2015
Hexavalent chromium biosorption by dried biomass of Aspergillus niger NUA101 isolated from Indian ultramafic complex
Mining operations in Sukinda and Baula-Nuasahi region of Orissa, India have led to the generation of a huge amount of overburden with considerable amount of chromium. Weathering of chromium by the natural agencies often contaminates the water sources of the region. Microbes indigenous to this environment having the potential of accumulating metals could be employed for removal as well as detoxification of heavy metals....
January 2015
Î’eta-mannanase activity of Trichosporonoides oedocephalis evaluated in different process parameters
The present study was carried out to investigate the optimal culture conditions for β-mannanase production by Trichosporonoides oedocephalis using cheap and easily available agro-wastes as the carbon source in solid state cultivation. The effect of process parameters like incubation time, carbon source, incubation temperature, pH, percentage moisture content and inoculum concentration were optimized for enhanced...
January 2015
Molecular characterization and phenotypic analysis of multidrug-resistant Escherichia coli and Klebsiella pneumoniae isolates from a tertiary-care hospital in Yunnan Province, China
Due to the increasing number of multidrug-resistant (MDR) isolates of Escherichia coli and Klebsiella pneumoniae reported from the Third People’s Hospital of Yunnan Province, an investigation was conducted to better understand the phenotype and molecular characterization of the local isolates. Twenty three non-duplicate E. coli isolates and nine K. pneumoniae isolates were recovered from hospitalized patients and...
January 2015
Heterotrophic microbial count during vemicomposting of municipal solid waste
Vermicomposting is a non-thermophilic biodegradation of organic material through interaction between earthworm and micro-organisms resulting in production of vermicompost. This study emphasizes on the heterotrophic microbial count during vermicomposting of the organic content of municipal solid waste. The heterotrophic microbial count (bacteria, fungi and actinomycetes) of the vermicomposts of municipal organic solid...
January 2015
Study of the presence of Salmonella spp. and gastrointestinal parasites in excreta from ornamental birds from breeders in the city of Umuarama, Paraná
Pets have been associated with emotional and physical benefits for their owners, and among these, ornamental birds can bring positive influences on quality of life. On the contrary, they harbor pathogenic micro-organisms of public health importance. Thus, this study aimed to investigate the presence of Salmonella spp. and intestinal parasites in 52 samples of excreta of passerines and parrots from breeders in the city...
January 2015
Influence of psychrotolerant plant growth-promoting rhizobacteria (PGPR) as coinoculants with Rhizobium on growth parameters and yield of lentil (Lens culinaris Medikus)
Cold-tolerant plant growth-promoting rhizobacteria (PGPR) are of immense agronomic importance due to the fact that the winter season crop growing cycle is subject to varying spells of low temperatures and such PGPRs are metabolically functional at cold conditions. Thirty-five (35) rhizobacterial isolates were isolated from lentil rhizospheric soil, six isolates showing maximum exponential growth at both 10 and 15°C...
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