Specific growth rate of sulfate reducing bacteria in the presence of manganese and cadmium

Medírcio, Silvia Nicolato; Leão, Versiane Albis; Teixeira, Mônica Cristina

doi:10.1016/j.jhazmat.2006.09.079

Cited by 32 publications

(21 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, the precipitation process can remove sulfide with the aid of several kinds of heavy metals. Biogenic sulfides form insoluble complexes with heavy metals resulting in their precipitation [6][7][8]. In some cases, stripping can be also used as an alternative for eliminating H 2 S toxicity [9,10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sulfide removal by simultaneous autotrophic and heterotrophic desulfurization–denitrification process

Li¹,

Zhao²,

Liu³

2009

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

“…Biooxidation of sulfide to sulfur and sulfate in the presence of nitrate and nitrite can possibly occur based on the computation of Gibbs energy according to reactions given in Eqs. (1)- (6).…”

Section: Introductionmentioning

confidence: 99%

Sulfide removal by simultaneous autotrophic and heterotrophic desulfurization–denitrification process

Li¹,

Zhao²,

Liu³

2009

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…The growth rate was computed from the slope of a linear regression line of the growth curve using the logarithmic region and was expressed in h Ϫ1 (31). The maximum cell density was estimated from the highest optical density at 600 nm obtained after 18 h of incubation (46).…”

mentioning

confidence: 99%

Complex Phenotypic and Genotypic Responses of Listeria monocytogenes Strains Exposed to the Class IIa Bacteriocin Sakacin P

Tessema

Møretrø

Köhler

et al. 2009

Appl Environ Microbiol

View full text Add to dashboard Cite

Sakacin P is a class IIa bacteriocin that is active against the food-borne pathogen Listeria monocytogenes, and use of this compound as a biopreservative in foods has been suggested. In the present study, we characterized 30 spontaneous sakacin P-resistant mutants of L. monocytogenes obtained after single exposure to sakacin P. The frequency of development of sakacin P resistance for all strains was in the range from 10 ؊8 to 10 ؊9 . Using the 50% inhibitory concentration (IC 50 ) of sakacin P, the strains could be grouped into strains with high levels of resistance (IC 50 , >10 4 ng ml ؊1 ) and strains with low levels of resistance (IC 50 , <10 4 ng ml ؊1 ). Resistant strains belonging to the same IC 50 group also had similar physiological and genetic characteristics. Generally, the resistant strains showed substantial variations in many parameters, such as differences in the stability of the acquired resistance to sakacin P, growth fitness, food-related stress tolerance, and biofilm-forming ability. Fourier transform infrared spectroscopy revealed differences between wild-type and resistant strains in polysaccharide, fatty acid, and, protein regions. A mannose-specific phosphotransferase (PTS) operon has been described for class IIa bacteriocin resistance, and the sakacin P-resistant strains displayed both up-and downregulation of the expression of the mptA gene encoding the PTS system. This is the first comprehensive study of the diversity of a large number of spontaneous resistant mutants obtained after one exposure to a class IIa bacteriocin, particularly to sakacin P. The great diversity among the resistant strains exposed to the same stress conditions suggests that there are different resistance mechanisms.

show abstract

“…There are only a few studies, however, addressing sulfate reduction using pure cultures, especially in batch conditions. Medircio et al (2007) have observed 26% sulfate reduction in the presence of manganese while Cabrera et al (2006) noticed around 40% sulfate reduction with a Desulfovibrio vulgaris strain. However, the latter reduced sulfate at pH 7.0, which is within the optimal pH range for most known SRB.…”

Section: Resultsmentioning

confidence: 95%

A sulfate-reducing bacterium with unusual growing capacity in moderately acidic conditions

et al. 2007

View full text Add to dashboard Cite

The use of sulfate-reducing bacteria (SRB) is a cost-effective route to treat sulfate- contaminated waters and precipitate metals. The isolation and characterization of a SRB strain from an AMD in a Brazilian tropical region site was carried out. With a moderately acidic pH (5.5), the C.1 strain began its growth and with continued growth, modified the pH accordingly. The strain under these conditions reduced sulfate at the same rate as an experiment performed using an initial pH of 7.0. The dsrB gene-based molecular approach was used for the characterization of this strain and its phylogenetic affiliation was similar to genus Desulfovibrio sp. The results show an SRB isolate with unexpected sulfate reducing capacity in moderately acidic conditions, bringing new possibilities for the treatment of AMD, as acid water would be neutralized to a mildly acidic condition.

show abstract

Specific growth rate of sulfate reducing bacteria in the presence of manganese and cadmium

Cited by 32 publications

References 15 publications

Sulfide removal by simultaneous autotrophic and heterotrophic desulfurization–denitrification process

Sulfide removal by simultaneous autotrophic and heterotrophic desulfurization–denitrification process

Complex Phenotypic and Genotypic Responses of Listeria monocytogenes Strains Exposed to the Class IIa Bacteriocin Sakacin P

A sulfate-reducing bacterium with unusual growing capacity in moderately acidic conditions

Contact Info

Product

Resources

About