Effect of starvation on the adhesive properties of xenobiotic degrading bacteria

Date

2003-01-31

Author

Sanin, SL
Sanin, Faika Dilek
Bryers, JD

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

217
views

0
downloads

The purpose of this study was to observe the effects of different starvation conditions on the surface characteristics and adhesive properties of bacteria. Three pure culture xenobiotic degrading bacteria were used in this study: Pseudomonas sp. strain A, Pseudomonas sp. strain D and Rhodococcus corallinus strain 11. These microorganisms were selected for to their ability to degrade cyanuric acid, which is a derivative of s-Triazine, a common herbicide. These microorganisms were separately starved for carbon (glucose) and nitrogen (cyanuric acid) and their physiological responses to starvation were measured. Results indicated that there was a remarkable shrinkage in size of Pseudomonas strain A starved for carbon for 16 days. The surface properties of these three microorganisms changed significantly on starvation. Surface hydrophobicities for all the microorganisms stayed more or less constant during carbon starvation conditions, whereas, there was a significant decrease in hydrophobicity when all three cultures were starved for nitrogen. In parallel to these findings, it was observed that when the hydrophobicity of the cultures decreased, the attachment capabilities of these microorganisms decreased. This is believed to be due to the production of highly hydrated extracellular polysaccharides when carbon is present in the medium. Results of this study have important implications on the transport and attachment of microorganisms during soil remediation processes.

Subject Keywords

Applied Microbiology and Biotechnology, Biochemistry, Bioengineering

URI

https://hdl.handle.net/11511/34482

Journal

PROCESS BIOCHEMISTRY

DOI

https://doi.org/10.1016/s0032-9592(02)00173-5

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

EFFECT OF OXYGEN ON ETHANOL FERMENTATION IN PACKED-BED TAPERED-COLUMN REACTOR Hamamcı, Haluk (1988-07-01) In ethanol production with immobilized yeast a major problem is the provision of nutrients to these highly concentrated cells. O2 being one of the nutrients of utmost importance to yeast cells, was fed into a column packed with beads with a cell loading of more than 40 g/l. Since addition of large volume of air or O2 to a cylindrical column reactor would aggravate the problems of pressure build up and channelling caused by the evolving CO2 gas, a tapered-column reactor and pulsed flow of oxygen gas was used...
Effects of pH and feeding strategy on metabolite profiling of beta-lactamase producing bacillus licheniformis İler, Nazar; Çalık, Pınar; Department of Chemical Engineering (2005) In this study, the effects of pH and different feeding modes on beta-lactamase production and cell metabolism were investigated with Bacillus licheniformis (ATCC 25972). For this purpose, first, the effects of pH on beta-lactamase activity, cell formation, substrate consumption, as well as intracellular sodium, potassium, ammonium ion, amino acid and organic acid concentrations were investigated in V= 3.0 dm3 batch bioreactors consisting of temperature, pH, foam, stirring rate and dissolved oxygen controls....
Influence of nickel (II) and chromium (VI) on the laboratory scale rotating biological contactor Taseli, B. K.; Gökçay, Celal Ferdi; Gurol, A. (Springer Science and Business Media LLC, 2008-09-01) High concentration of heavy metals is toxic for most microorganisms and cause strict damage in wastewater treatment operations and often a physico-chemical pretreatment prior to biological treatment is considered necessary. However, in this study it has been shown that biological systems can adapt to Ni (II) and Cr (VI) when their concentration is below 10 and 20 mg/L, respectively. The aim of this study was to evaluate the effect of Ni (II) and Cr (VI) on the lab-scale rotating biological contactor process...
Effects of warming and nutrients on the microbial food web in shallow lake mesocosms Zingel, Priit; Cremona, Fabien; Noges, Tiina; Cao, Yu; Neif, Erika M.; Coppens, Jan; Iskin, Ugur; Lauridsen, Torben L.; Davidson, Thomas A.; Sondergaard, Martin; Beklioğlu, Meryem; Jeppesen, Erik (Elsevier BV, 2018-06-01) We analysed changes in the abundance, biomass and cell size of the microbial food web community (bacteria, heterotrophic nanoflagellates, ciliates) at contrasting nutrient concentrations and temperatures during a simulated heat wave. We used 24 mesocosms mimicking shallow lakes in which two nutrient levels (unenriched and enriched by adding nitrogen and phosphorus) and three different temperature scenarios (ambient, IPCC A2 scenario and A2+%50) are simulated (4 replicates of each). Experiments using the mes...
Effect of operational parameters on anaerobic co-digestion of dairy cattle manure and agricultural residues: A case study for the Kahramanmaras region in Turkey Alkaya, Emrah; Bayramoğlu, Tuba Hande; DEMİRER, GÖKSEL NİYAZİ (Wiley, 2010-12-01) The aim of this study was to investigate the effect of temperature and hydraulic retention time (HRT) on anaerobic co-digestion/biomethanation of cattle manure and agricultural residues (clover, grass and wheat straw). For this purpose, 12 semi-continuous reactors, fed with/without agricultural residues, were operated under varied temperature (10 +/-, 20 +/- and 35 +/- 1 degrees C) and HRT (20 and 30 days) conditions. During the experimental study, all reactors were fed once on a daily basis and operated wi...

Citation Formats

S. Sanin, F. D. Sanin, and J. Bryers, “Effect of starvation on the adhesive properties of xenobiotic degrading bacteria,” PROCESS BIOCHEMISTRY, pp. 909–914, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34482.