Effect of plant extract on the degradation of nitroaromatic compounds by soil microorganisms

Muter, Olga; Veršilovskis, Aleksandrs; Scherbaka, Rita; Grūbe, Māra; Zarina, Dzidra

doi:10.1007/s10295-008-0455-1

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…A. tenuifolius and S. persica as well as L. inermis and P. oleracea alcoholic extracts significantly ( P < 0.05) inhibited growth of C. albicans to 24 and 72 h post-incubation, respectively (Table 3). The other plant extracts including A. marina , F. indica and Z. spina- Christi increased the growth of C. albicans at lower concentrations, similar to some plant extracts such as green tea leaf extract [47] and cabbage leaf extract [48] that can selectively inhibit and stimulate different microbial growth. All ethyl acetate extracts showed no activity either on solid or liquid media (data not shown).…”

Section: Resultsmentioning

confidence: 78%

Assessment of herbal drugs for promising anti-Candida activity

Soliman

Semreen

El‐Keblawy

et al. 2017

BMC Complement Altern Med

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BackgroundMicrobial infections are diverse and cause serious human diseases. Candida albicans infections are serious healthcare-related infections that are complicated by its morphological switching from yeast to hyphae, resistant biofilm formation and mixed infections with bacteria. Due to the increase in drug resistance to currently used antimicrobial agents and the presence of undesirable side effects, the need for safe and effective novel therapies is important. Compounds derived from plants are known for their medicinal properties including antimicrobial activities. The purpose of the study was to compare and evaluate the anti-Candida activities of several medicinal plants in order for the selection of a herbal drug for human use as effective antimicrobial. The selection was taking into considerations two important parameters; parameters related to the selected drug including activity, stability, solubility and toxicity and parameters related to the pathogen including its different dynamic growth and its accompanied secondary bacterial infections.MethodsSeven different plants including Avicennia marina (Qurm), Fagonia indica (Shoka’a), Lawsania inermis (Henna), Portulaca oleracea (Baq’lah), Salvadora persica (Souwak), Ziziphus spina- Christi (Sidr) and Asphodelus tenuifolius (Kufer) were ground and extracted with ethanol. The ethanol extracts were evaporated and the residual extract dissolved in water prior to testing against Candida albicans in its different morphologies. The antibacterial and cytotoxic effects of the plants extracts were also tested.ResultsOut of the seven tested plants, L. inermis and P. oleracea showed significant anti-Candida activity with MIC ~10 μg/mL. Furthermore, both plant extracts were able to inhibit C. albicans growth at its dynamic growth phases including biofilm formation and age resistance. Accompanied secondary bacterial infections can complicate Candida pathogenesis. L. inermis and P. oleracea extracts showed effective antibacterial activities against S. aureus, P. aeruginosa, E. coli, and the multidrug resistant (MDR) A. baumannii and Klebsiella pneumoniae. Both extracts showed no toxicity when measured at their MIC on human erythrocytes.ConclusionThe results from this study suggested that L. inermis and P. oleracea extracts and/or their chemicals are likely to be promising drugs for human use against C. albicans and MDR bacteria.

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Section: Resultsmentioning

confidence: 78%

Assessment of herbal drugs for promising anti-Candida activity

Soliman

Semreen

El‐Keblawy

et al. 2017

BMC Complement Altern Med

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“…Regarding to the relationship between soil bacteria and their response to toxic compounds, Muter et al (2008) described at least four types of behavior: bacteria that are inhibited by the toxic, bacteria that are resistant, those which resist and degrade the toxic but do not grow and finally, bacteria that resist and degrade the toxic as well as use degradation products for biomass growth. As it could be seen, the analyzed strains were able to grow in a phenolcontaining medium.…”

Section: Resultsmentioning

confidence: 99%

Brassica napus hairy roots and rhizobacteria for phenolic compounds removal

González

Ontañon

Armendariz

et al. 2012

Environ Sci Pollut Res

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Phenolic compounds are contaminants frequently found in water and soils. In the last years, some technologies such as phytoremediation have emerged to remediate contaminated sites. Plants alone are unable to completely degrade some pollutants; therefore, their association with rhizospheric bacteria has been proposed to increase phytoremediation potential, an approach called rhizoremediation. In this work, the ability of two rhizobacteria, Burkholderia kururiensis KP 23 and Agrobacterium rhizogenes LBA 9402, to tolerate and degrade phenolic compounds was evaluated. Both microorganisms were capable of tolerating high concentrations of phenol, 2,4-dichlorophenol (2,4-DCP), guaiacol, or pentachlorophenol (PCP), and degrading different concentrations of phenol and 2,4-DCP. Association of these bacterial strains with B. napus hairy roots, as model plant system, showed that the presence of both rhizospheric microorganisms, along with B. napus hairy roots, enhanced phenol degradation compared to B. napus hairy roots alone. These findings are interesting for future applications of these strains in phenol rhizoremediation processes, with whole plants, providing an efficient, economic, and sustainable remediation technology.

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“…Besides, 500 g filtering medium (oxide ceramics) were added to the set "B", while 3 mL nutrient composition and 700 μL concentrated AS -to the set "C". Nutrient composition consisted of 333 μL 30% sugar beet molasses containing 40% w/w sucrose (final concentration 0.1%), previously autoclaved for 20 min at 1 bar, and 500 μL cabbage leaf extract, prepared according to [18] and sterilized by filtering through hydrophilic Minisart Syringe Filter (Sartorius, Germany). The final concentration of AS in the columns ("C") was 500 mg/L by total suspended solids.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Glyphosate Ecotoxicity and Biodegradability in the Municipal Wastewaters

Birsa

Kalneniece

Jansons

et al. 2018

KEM

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Glyphosate (G) is a broad-spectrum systemic organophosphate herbicide being widely used to control weeds in agricultural fields and urban areas. Its safety for both human health and aquatic biomes is a subject of wide debate. This study was aimed at evaluating the removal efficiency and ecotoxicity of G based herbicide (GBH) Klinik® (Nufarm, Austria) added to the raw municipal wastewater (WW) in a lab-scale model column system. The effect of oxide ceramics as a filtering medium (treatment „B”), as well as activated sludge and nutrients (treatment „C”) was compared with the control columns, which contained only WW (treatment „A”). After 72h treatment of WW spiked with 100 mg/L G, the lowest G concentration was detected in the treatment „B”, i.e., 79.4±0.6 mg/L. Treatments „A” and „C” resulted in the remaining G concentrations of 83.3±3.8 and 89.6±3.7 mg/l, respectively. The second addition of 100 mg/L G to the columns followed by 72h incubation also showed the advantage of oxide ceramics. Most probably, this effect could be explained by coupled sorption and biodegradation processes. Experiments were accompanied by microbiological (colony forming units; biological oxygen demand) and ecotoxicological (Daphtoxkit F magna, MicroBioTests) testing. The results indicated that WW-derived microorganisms resist the presence of GBH in the tested concentration range of G, i.e., up to 300 mg/L. As for Daphnia magna, the 24-h EC50 for the GBH Klinik® under standard conditions and in raw WW was found to be 22 mg/L and 6 mg/L G, respectively.

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Effect of plant extract on the degradation of nitroaromatic compounds by soil microorganisms

Cited by 11 publications

References 24 publications

Assessment of herbal drugs for promising anti-Candida activity

Assessment of herbal drugs for promising anti-Candida activity

Brassica napus hairy roots and rhizobacteria for phenolic compounds removal

Evaluation of Glyphosate Ecotoxicity and Biodegradability in the Municipal Wastewaters

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