Analysis of highly polar compounds in groundwater samples from ammunition waste sites. Part I—Characterization of the pollutant spectrum

2005 ◽  
Vol 43 (9) ◽  
pp. 736-746 ◽  
Author(s):  
Alfred Preiss ◽  
Manfred Elend ◽  
Susanne Gerling ◽  
Simone Tränckner
Keyword(s):  
Polar Compounds ◽  
Groundwater Samples ◽  
Highly Polar Compounds ◽  
Ammunition Waste

Molecular characterization of hot spring cyanobacteria and evaluation of their photoprotective compounds

2012 ◽  
Vol 58 (6) ◽  
pp. 719-727 ◽  
Author(s):  
Rajesh P. Rastogi ◽  
Sunita Kumari ◽  
Richa ◽  
Taejun Han ◽  
Rajeshwar P. Sinha
Keyword(s):  
Amino Acids ◽  
High Performance ◽  
Hot Springs ◽  
Hot Spring ◽  
Polar Compounds ◽  
Rrna Gene ◽  
Negative Impacts ◽  
Highly Polar Compounds ◽  
The 16S Rrna Gene

Phylogenetic analysis of 4 cyanobacterial strains isolated from hot springs in Rajgir, India, was carried out using the 16S rRNA gene (1400 bp). These strains were identified as members of Chroococcales ( Cyanothece sp. strain HKAR-1) and Nostocales ( Nostoc sp. strain HKAR-2, Scytonema sp. strain HKAR-3, and Rivularia sp. strain HKAR-4). Furthermore, we evaluated the presence of ultraviolet-screening and (or) photoprotective compounds, such as mycosporine-like amino acids (MAAs) and scytonemin, in these cyanobacteria by using high-performance liquid chromatography. Well-characterized MAAs, including the critical and highly polar compounds shinorine, porphyra-334, and mycosporine-glycine, as well as several unknown MAAs, were found in these hot-spring-inhabiting microorganisms. The presence of scytonemin was detected only in Scytonema sp. strain HKAR-3 and Rivularia sp. strain HKAR-4. The results indicate that hot spring cyanobacteria, namely Cyanothece, Nostoc, Scytonema, and Rivularia, belonging to different groups possess various photoprotective compounds to cope up with the negative impacts of damaging radiations.

Isolation and characterization of the ethynylestradiol-biodegrading microorganism Fusarium proliferatum strain HNS-1

2002 ◽  
Vol 45 (12) ◽  
pp. 175-179 ◽  
Author(s):  
J.H. Shi ◽  
Y. Suzuki ◽  
B.-D. Lee ◽  
S. Nakai ◽  
M. Hosomi
Keyword(s):  
Culture Medium ◽  
Polar Compounds ◽  
Sole Source ◽  
Order Rate Constant ◽  
Fusarium Proliferatum ◽  
Rrna Gene ◽  
28S Rrna ◽  
Isolation And Characterization ◽  
Phenolic Group

We cultivated hundreds of sediment, soil, and manure samples taken from rivers and farms in a medium containing ethynylestradiol (EE2) as the sole source of carbon, so that microorganisms in the samples would acclimatize to the presence of EE2. Finally, we isolated an EE2-degrading microorganism, designated as strain HNS-1, from a cowshed sample. Based on its partial nucleotide sequence (563 bp) of the 28S rRNA gene, strain HNS-1 was identified as Fusarium proliferatum. Over 15 days, F. proliferatum strain HNS-1 removed 97% of EE2 at an initial concentration of 25 mg.L−1, with a first-order rate constant of 0.6 d−1. Unknown products of EE2 degradation, which may be more polar compounds that have a phenolic group, remained in the culture medium.

Open-Framework Polar Compounds: Synthesis and Characterization of Rare-Earth Polyoxometalates (C6NO2H5)2[Ln(H2O)5(CrMo6H6O24)]×0.5H2O (Ln: Ce and La).

ChemInform ◽  
2005 ◽  
Vol 36 (19) ◽  
pp. no-no
Author(s):  
Haiyan An ◽  
Dongrong Xiao ◽  
Enbo Wang ◽  
Yangguang Li ◽  
Xinlong Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Polar Compounds ◽  
Synthesis And Characterization ◽  
Open Framework
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