Microorganisms relevant to bioremediation

Watanabe, Kazuya

doi:10.1016/s0958-1669(00)00205-6

Cited by 309 publications

(129 citation statements)

References 41 publications

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“…However, in the recent years, areas such as microscopy have given new tools to scientists to understand and take advantage of phenomena that occur naturally when matter is organized at the nanoscale. In addition, the fact that a majority of biological processes occur at the nanoscale gives scientists models and templates to imagine and construct new processes that can enhance their work in biomineralization (Robert and Schiffmant 1990;Rajesh et al 2002), bioremediation (Francesco and Francesca 1997;Stephen and Macnaughton 1999;Watanabe 2001), bioleaching (Brierley and Brierley 2001;Harvey and Crundwell 1997), microbial corrosion (Peter Angell 1999), biomedical materials (Chad et al 1996;David 2003) and many other fields. One of the major applications of nanotechnology is in biomedicine in that nanoparticles can be engineered as nanoplatforms for effective and targeted delivery of drugs and imaging labels by overcoming the barriers (Rajshri and Tarala 2007).…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticles synthesized by Brassica oleracea (Broccoli) acting as antimicrobial agents against human pathogenic bacteria and fungi

Piruthiviraj

Margret²,

Krishnamurthy

2015

Appl Nanosci

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Production of antimicrobial agents through the synthesis of gold nanoparticles using green technology has been extensively made consistent by various researchers; yet, this study uses the flower bud's aqueous extracts of Brassica oleracea (Broccoli) as a reducing agent for chloroauric acid (1 mM). After 30 min of incubation, synthesis of gold nanoparticles (AuNps) was observed by a change in extract color from pale yellow to purple color. Synthesis of AuNps was confirmed in UV-visible spectroscopy at the range of approximately 560 nm. The SEM analysis showed the average nanoparticles size of 12-22 nm. The antimicrobial activity of AuNps was analyzed by subjecting it to human pathogenic bacteria (Grampositive Staphylococcus aureus and Gram-negative Klebsiella pneumonia) and fungi (Aspergillus flavus, Aspergillus niger and Candida albicans) using disc diffusion method. The broccoli-synthesized AuNps showed the efficient antibacterial and antifungal activity of above-mentioned microbes. It was confirmed that AuNps have the best antimicrobial agent compared to the standard antibiotics (Gentamicin and Fluconazole). When the concentrations of AuNps were increased (10, 25, and 50 lg/ml), the sensitivity zone also increased for all the tested microbes. The synthesized AuNps are capable of rendering high antimicrobial efficacy and, hence, have a great potential in the preparation of drugs used against major bacterial and fungal diseases in humans.

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Section: Introductionmentioning

confidence: 99%

Gold nanoparticles synthesized by Brassica oleracea (Broccoli) acting as antimicrobial agents against human pathogenic bacteria and fungi

Piruthiviraj

Margret²,

Krishnamurthy

2015

Appl Nanosci

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“…The low molecular weight (two and three rings) PAHs have a significant acute toxicity, whereas some of the higher molecular weight PAHs are carcinogenic (Watanabe 2001). …”

Section: Issn: 2320-5407mentioning

confidence: 99%

Polycyclic-Aromatic Hydrocarbon (Pahs) in Environment and Human Health: A Review.

Kisku¹,

Tripathi²,

Raj³

2018

IJAR

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“…All PCR primers were designed with the software analysis options available through the National Center for Biotechnology Information Basic Local Alignment Search Tool (NCBI BLAST) (www.ncbi.nlm.nih.gov/BLAST), which allows for sequences to be screened for nonspecific annealing frequencies and non-target homology determination. Internal standard primer targets in each case were the highly conserved prokaryotic gyrase subunit B gene, gyrB [25]. Primer sequences and PCR cycling regime were used as described by Turner et al, 2014 [8].…”

Section: Soil Microbiological Analysesmentioning

confidence: 99%

Microbial degradation of gasoline in soil: Effect of season of sampling

Turner

Pichtel

Rodenas

et al. 2015

Forensic Science International

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In cases where fire debris contains soil, microorganisms can rapidly and irreversibly alter the chemical composition of any ignitable liquid residue that may be present. In this study, differences in microbial degradation due to the season in which the sample is collected was examined. Soil samples were collected from the same site during Fall, Winter, Spring and Summer and the degradation of gasoline was monitored over 30 days. Predominant viable bacterial populations enumerated using real-time PCR and reverse transcriptase polymerase chain reaction (RT-PCR) enumeration revealed the predominant viable bacterial genera to be Alcaligenes, Bacillus, and Flavobacterium. Overall, the compounds most vulnerable to microbial degradation are the n-alkanes, followed by the mono-substituted alkylbenzenes (e.g., toluene, ethylbenzene, propylbenzene and isopropylbenzene). Benzaldehyde (a degradation product of toluene) was also identified as a marker for the extent of biodegradation.Ultimately, it was determined that soil collected during an unusually hot and dry summer exhibited the least degradation with little to no change in gasoline for up to 4 days, readily detectable n-alkanes for up to 7 days and relatively high levels of resilient compounds such as

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Microorganisms relevant to bioremediation

Cited by 309 publications

References 41 publications

Gold nanoparticles synthesized by Brassica oleracea (Broccoli) acting as antimicrobial agents against human pathogenic bacteria and fungi

Gold nanoparticles synthesized by Brassica oleracea (Broccoli) acting as antimicrobial agents against human pathogenic bacteria and fungi

Polycyclic-Aromatic Hydrocarbon (Pahs) in Environment and Human Health: A Review.

Microbial degradation of gasoline in soil: Effect of season of sampling

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