Bioaccumulation of heavy metals on adapted Aspergillus foetidus

Ge, Weirong; Zamri, Diyana; Mineyama, Hiro; Valix, Marjorie

doi:10.1007/s10450-011-9359-x

Cited by 38 publications

(21 citation statements)

References 36 publications

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“…Ge et al . () suggested that the adaptation of fungi towards heavy metals will lead to modification of the hyphae cell surface believed to be involved in intracellular detoxification of heavy metals.…”

Section: Resultsmentioning

confidence: 99%

“…Helander (1995) found a higher tolerance towards Ni and Cu of an endophytic fungal strain, Hormonema sp., that was isolated from a plant taken near the pollution source (a factory in Harjavalta) compared to isolates obtained from the same plant species but taken 8 km away from the factory, where the pollution level is lower. Ge et al (2011) suggested that the adaptation of fungi towards heavy metals will lead to modification of Table 2 Biosorption capacity (mg g À1 ) of the live and dead biomass of the isolated fungi on heavy metal copper biosorption…”

Section: Biosorption Of Cu By Live and Dead Fungal Biomassmentioning

confidence: 99%

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Biosorption of copper by endophytic fungi isolated fromNepenthes ampullaria

Wong

Tan

Mujahid

et al. 2018

Lett Appl Microbiol

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Our study highlights that fungal biosorption capacity is highly dependent on the sampling area (roadside vs jungle) with roadside fungal strains showing significantly higher copper (Cu) biosorption capacities using living biomass compared to fungal strains originating from plants collected in virgin jungle (P < 0·05). It also highlights that different biosorption mechanisms (alive - metabolic dependent and dead biomass - metabolic independent) result in different amounts of Cu being removed from the solutions. The living biomass possessed a better biosorption capacity than the dead biomass (P < 0·05).

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Section: Resultsmentioning

confidence: 99%

Section: Biosorption Of Cu By Live and Dead Fungal Biomassmentioning

confidence: 99%

Biosorption of copper by endophytic fungi isolated fromNepenthes ampullaria

Wong

Tan

Mujahid

et al. 2018

Lett Appl Microbiol

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“…The effects of contact time (1-7 days) [13], pH (4, 5, and 6) [17], and initial Cd concentrations (25,50, and 100 ppm) [16] on removal capacity of active mycelia were determined respectively. Time course experiments, were conducted in 250 mL Erlenmeyer flasks with a working PDB volume of 100 mL contaminated with 100 ppm Cd concentration at pH 6.…”

Section: Bioaccumulation Tests By Growing Fungusmentioning

confidence: 99%

Application of Live, Dead and Dried Biomasses of Aspergillus Versicolor for Cadmium Biotreatment

Soleimani

Fazli

Ramazani

et al. 2016

J. Hum. Environ. Health Promot.

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Background: Various industries produce and discharge wastes containing different heavy metals into the environment. Apart from using living biomass, dead and dried biomasses have been introduced as a new field of biotreatment technology. Method: The cadmium (Cd) (II) removal characteristics of live (growing), dead (autoclaved), and oven-dried biomasses of Aspergillus versicolor were examined as a function of initial pH, contact time, and initial Cd concentration. Result: Maximum bioaccumulation of Cd for live biomass [11.63 (mg g − ¹)] occurred at an optimal pH of 4 and incubation time of 4 days. Themaximum biosorption of 27.56 (mg g − ¹) for dead biomass occurred at 1.5 h and at a pH of 4. The maximum biosorption [18.08 (mg g − ¹)] with dried biomass was reached at an equilibrium time of 3 h at a pH of 6. Conclusion: The present study confirmed that heat treatment promoted the removal capacity of fungi. Cd removal was increased by decreasing the pH in live and dead-mode experiments. Inversely, Cd removal was increased with increasing pH for the dried biomass of A. versicolor. Varying responses to environmental conditions (pH and contact time) clearly proved the different removal mechanisms used by three biomasses of A. versicolor. Higher Cd concentration increased the removal ability of three types of biomasses. The results indicated that all biomasses of A. versicolor used in this study, particularly dead biomass, are a suitable biosorbent for the removal of Cd (II) ions from aqueous solution.

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“…Thiols are a well-known for metal chelation and detoxification. Some important members of the thiol family are capable of binding heavy metal ions to thiol-containing compounds such as GSH and sequestering these metal-thiol complexes into sub-cellular compartments of vacuoles (Schmoger et al, 2000 andGe et al, 2011). …”

Section: Effect Of Cu(ii) On Thiol Content Of a Awamorimentioning

confidence: 99%

“…One of them is the production of extracellular metabolites (e.g. citrate, oxalate) that is capable of adsorbing and precipitating the metal ions on the cell surface (Ge et al, 2011). …”

Section: Oxalic Acid Secretionmentioning

confidence: 99%

An Investigation on Tolerance and Biosorption Potential of Aspergillus awamori ZU JQ 965830.1 to Cu(II)

2013

Egypt. J. Microbiol.

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HE MINIMUM inhibitory concentration (MIC) value of ……A.awamori for Cu(II) was 3100mg/l and a complete inhibition of biomass production was observed at 800mg/l concentration of Cu(II). Slight changes were observed by SEM investigation in Cu(II)-stressed biomass. Quantification of Cu(II) was performed by EDAX. Transmission electron microscopy investigation (TEM) confirmed the involvement of extracellular adsorption, intracellular penetration through the cell wall and vacuolation. Cu(II) stress induced noticeable changes in the activities of polyphenol oxidase(PPO), glutathione reductase (GR) and peroxidase (POD) and in the concentration of total antioxidant, soluble protein and thiol. High performance liquid chromatography analysis (HPLC) revealed that Cu(II) stress stimulated the production of oxalic acid .Maximum Cu(II) uptake capacity was achieved at pH 4.0, initial metal ion concentration 500mg/l and biomass dosage 1g/l. Maximum Cu(II) uptake capacities were reached after 180 min for live biomass and 30 min for dead biomass. Fourier transform infrared spectroscopy (FTIR) results gave an indicateion of chelation between oxygen-, nitrogen-, phosphorus-and especially sulphur-containing ligands of biomass with metal ions. X-ray diffraction analysis (XRD) revealed the presence of CuSO 4 .H 2 O in live and dead biomass. EDAX confirmed the occurrence of sulphur, oxygen and Cu(II) in the cell wall.Keywords: Aspergillus awamor;, Cu(II), Stress, Antioxidant enzymes, Biosorption.Several inorganic and organic compounds such as heavy metals, fuels and petroleum industry products cause soil and water contamination. For this reason, research focused toward better decontamination methods and the development of new technologies is imperative (Velásquez & Dussan, 2009).Remediation methods for heavy metals differ from those for organic compounds. As compared to organic compounds, metals are non-biodegradable (Gupta & Rastogi, 2008). Therefore, biomobilization is a valid concept in the management of metal pollution. Some metal ions, like Cu(II) and Zn(II) are essential for biological processes, but other nonessential metals like Cd(II) and Hg(II) are considered highly toxic elements to nearly all organisms even at low MANAL T. EL-SAYED Egypt. J. Microbiol. 48(2013) 24concentrations (Guelfi et al., 2003). However, Cu(II) is toxic to most organisms at elevated concentrations, largely through enzyme inhibition and oxidation of membrane components as a result of the ability of Cu(II) to generate toxic hydroxyl radicals (Melo et al., 2004). Membrane damage then leads to rapid leakage of ions and other low molecular weight compounds (Soares et al., 2003).Various techniques such as precipitation, coagulation, ion exchange, reverse osmosis, evaporation, filtration, electrochemical treatment and oxidation and reduction have been employed to remove toxic heavy metals from industrial wastewaters. Most of these techniques are ineffective or extremely expensive in terms of energy and reagent consumption, especially when concentrations of diss...

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Bioaccumulation of heavy metals on adapted Aspergillus foetidus

Cited by 38 publications

References 36 publications

Biosorption of copper by endophytic fungi isolated fromNepenthes ampullaria

Biosorption of copper by endophytic fungi isolated fromNepenthes ampullaria

Application of Live, Dead and Dried Biomasses of Aspergillus Versicolor for Cadmium Biotreatment

An Investigation on Tolerance and Biosorption Potential of Aspergillus awamori ZU JQ 965830.1 to Cu(II)

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