Effect of starvation on induction of quinoline degradation for a subsurface bacterium in a continuous-flow column

Article Abstract:

Induction time for long-term-starved (60-80 days) cells was primarily affected by quinoline concentration. Long-term starvation resulted in more efficient conversion of quinoline into degradation products at concentrations of 39 and 155 micromoles. Higher concentrations appeared to inhibit induction and reduce efficiency in long-term starved cells. The steady state degradation of quinoline by the long-term-starved cells was similar or better than the short-term-starved cells. Induction times in short-term-starved cells did not increase with increasing quinoline concentration.

Quinoline, Quinolines

---

New metabolites in the degradation of fluorene by Arthrobacter sp. strain F101

Article Abstract:

Washed-cell suspensions of Arthrobacter sp. strain F101 were analyzed to determine the enzymatic activities, metabolites and pathways that mediate fluorene metabolism. Analysis of Arthrobacter strain F101 with fluorene accumulated 9-fluorenone and formyl indanone indicate the occurrence of initial dioxygenation in the C-1, C-2 or at C-3 and C-4 positions. Furthermore, metabolic pathways are characterized by the combined metabolism of aromatic compounds and linear fatty acids such as beta oxidation.

Analysis, Microbial metabolism, Fluorine compounds

---

(super 1)H nuclear magnetic resonance spectroscopy-based studies of the metabolism of food-borne carcinogen 2-amino-3-methylimidazol[4,5-f]quinoline by human intestinal microbiota

Article Abstract:

The metabolism of 2-amino-3-methylimidazol[4,5-f]quinoline (IQ) by human intestinal microbiota is investigated, using (super 1)H nuclear magnetic resonance spectroscopy-based studies. The (super 1)H nuclear magnetic resonance spectroscopy of crude biological samples allows measurement of a wide range of moelcules simultaneously and without a priori hypotheses concerning their chemical structure.

Science & research, Nuclear magnetic resonance spectroscopy, Carcinogenesis

Similar abstracts:

• Abstracts: Effect of humic fractions and clay on biodegradation of phenanthrene by a Pseudomonas fluorescens strain isolated from soil
• Abstracts: Effect of protistan grazing on the frequency of dividing cells in bacterioplankton assemblages. Fully automatic determination of soil bacterium numbers, cell volumes, and frequencies of dividing cells by confocal laser scanning microscopy and image analysis

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.