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Use of the sulfide minerals pyrite and chalcopyrite as electrochemical sensors in non-aqueous solutions. The potentiometric titration of weak acids in alcohols
(Versita, Warsaw 41, 2009)
Natural monocrystalline pyrite and chalcopyrite were examined as new indicator electrodes for the potentiometric titration of weak acids in tert-butanol and iso-propanol. The electrodes investigated demonstrated a linear ...
Characterization of temperature-sensitive and lipopolysaccharide overproducing transposon mutants of Pseudomonas putida CA-3 affected in PHA accumulation
(Wiley-Blackwell Publishing, Inc, Malden, 2009)
A library of 20 000 transposon (Tn5) mutants of the gram-negative bacterium Pseudomonas putida CA-3 was generated and screened for adverse affects in polyhydroxyalkanoates (PHA) accumulation. Two mutants of interest were ...
Influence of Pressure and Time on Extraction Process Using Supercritical Co2
(Technical Faculty, Bor-Serbia, Bor, 2008)
The supercritical fluid extraction (SFE) by carbon dioxide (CO2) of Salvia officinalis L. was investigated. SFE by CO2 was performed at different pressure (80, 100, 150, 200 and 300 bar) and constant temperature of 40 ...
Amplification of DNA encoding entire type I polyketide synthase domains and linkers from Streptomyces species
(Springer, New York, 2006)
Polyketides are a group of bioactive compounds from bacteria, plants, and fungi. To increase the availability of analogs for testing, the active sites of polyketide synthases are often substituted with homologous domains ...
Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents
(Research Inst Medicinal Plants, Budakalasz, 2009)
The chromatographic behavior of twelve neutral, mixed cobalt(III) complexes of the uns-cis-edda-type has been investigated in six planar chromatographic systems. Four different stationary phases unmodified silica gel, ...
Characterization of melanin-overproducing transposon mutants of Pseudomonas putida F6
(Wiley-Blackwell Publishing, Inc, Malden, 2009)
Two melanin-overproducing Pseudomonas putida F6 mutants were generated using transposon (Tn5) mutagenesis. Mutants were disrupted in a transcriptional regulator (TR) and a homogentisate 1,2-dioxygenase (HDO) gene. Colonies ...
Synthesis and structural characterization of the Co(III) complex with 2 '-[1-(2-pyridinyl)-ethylidene]oxamohydrazide (Hapsox): The crystal structure of bis-{2 '-[1-(2-pyridinyl)-ethylidene]-oxamohydrazido} cobalt(III) perchlorate, [Co(apsox)(2)]ClO4
(Taylor & Francis Ltd, Abingdon, 2003)
The synthesis of a novel ligand 2'-[1-(2-pyridinyl)-ethylidene]-oxamohydrazide (Hapsox), from a series of 2-acetylpyridine acylhydrazones, and its complex with Co(III), which is the first in this series of complexes are ...
Resolution of methyl nonactate by Rhodococcus erythropolis under aerobic and anaerobic conditions
(Amer Chemical Soc, Washington, 2006)
An efficient resolution of methyl nonactate is reported by biotransformation in shake flask cultures of Rhodococcus erythropolis. The equilibrium of the reaction redox system can be manipulated by switching from aerobic ...
Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols
(Elsevier Science Inc, New York, 2008)
Tyrosinase (tyr) purified from Pseudomonas putida F6, Streptomyces antibioticus, and Agaricus bisporus (mushroom) oxidises 3 regioisomers of fluorophenol as well as 3,4-difluorophenol (3,4FP). The catalytic efficiency ...
High frequency transformation of the amphotericin-producing bacterium Streptomyces nodosus
(Elsevier Science Bv, Amsterdam, 2003)
This study has investigated DNA transformation in the Amphotericin-producing organism Streptomyces nodosus. Amphotericin B is an antifungal drug with severe side effects in humans and the availability of structural variants ...