Bioaccumulation of azo dye using immobilised beads of Aspergillus fumigatus

Wang, Baoe; Hu, Yongyou; Xie, Lei; Peng, Kang-Lin

doi:10.1504/ijep.2009.025136

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…The intramolecular heterodimer probe (4) containing the azo bond could potentially be reduced by azoreductase enzymes, present in certain bacteria and fungi. [16][17][18][19][20][21][22] Therefore, the azo probe may have an application in the detection of increased level of significant fungal and bacterial cultures, for example aspergillus and MRSA. This approach may offer rapid and cost-efficient clinical diagnostic probes or tools to detect the elevated level of bacteria/fungi colonies on medical surfaces.…”

Section: Resultsmentioning

confidence: 99%

Bioreductive molecular probe: fluorescence signalling upon reduction of an azo group

et al. 2011

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The intramolecular heterodimer probe 4-O-dabsyl-2-O-dansyl-myo-inositol-1,3,5-orthoformate undergoes biomimetic reduction of the azo bond in the dabsyl group to give a fluorescence emission band at 560 nm. This is attributed to the loss of energy transfer between the fluorophore (dansyl) and quencher (dabsyl) groups as a result of the formation of 4-O-(4-aminobenzene sulfonyl)-2-O-dansyl-myo-inositol-1,3,5-orthoformate.Scheme 1 Acid-induced deprotection of orthoformate ester in dual labeled 4-O-dabsyl-6-O-dansyl-myo-inositol-1,3,5-orthoformate probe (1). 8

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Section: Resultsmentioning

confidence: 99%

Bioreductive molecular probe: fluorescence signalling upon reduction of an azo group

et al. 2011

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“…The experimental obtained results showed an increased biosorption capacity of the heat-treated biomass (inactive) compared to the active one, and especially compared to the polymeric support (CMC): 102.15 mg/g, 183.10 mg/g and 39.42 mg/g Hg(II), respectively [ 51 ]. Aspergillus fumigatus immobilized in sodium carboxymethylcellulose beads were used to remove reactive Brilliant Red K-2BP from aqueous solutions, obtaining the following optimum conditions: initial pH = 6–9, temperature = 40 °C, agitation rate = 150 r/min, beads diameter = 2.0 mm, and beads dosage = 3.0% [ 52 ].…”

Section: Polymer Support For Immobilization Of Microbial Biomass To Obtain Biosorbentsmentioning

confidence: 99%

Polysaccharides as Support for Microbial Biomass-Based Adsorbents with Applications in Removal of Heavy Metals and Dyes

2021

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The use of biosorbents for the decontamination of industrial effluent (e.g., wastewater treatment) by retaining non-biodegradable pollutants (antibiotics, dyes, and heavy metals) has been investigated in order to develop inexpensive and effective techniques. The exacerbated water pollution crisis is a huge threat to the global economy, especially in association with the rapid development of industry; thus, the sustainable reuse of different treated water resources has become a worldwide necessity. This review investigates the use of different natural (living and non-living) microbial biomass types containing polysaccharides, proteins, and lipids (natural polymers) as biosorbents in free and immobilized forms. Microbial biomass immobilization performed by using polymeric support (i.e., polysaccharides) would ensure the production of efficient biosorbents, with good mechanical resistance and easy separation ability, utilized in different effluents’ depollution. Biomass-based biosorbents, due to their outstanding biosorption abilities and good efficiency for effluent treatment (concentrated or diluted solutions of residuals/contaminants), need to be used in industrial environmental applications, to improve environmental sustainability of the economic activities. This review presents the most recent advances related the main polymers such as polysaccharides and microbial cells used for biosorbents production; a detailed analysis of the biosorption capability of algal, bacterial and fungal biomass; as well as a series of specific applications for retaining metal ions and organic dyes. Even if biosorption offers many advantages, the complexity of operation increased by the presence of multiple pollutants in real wastewater combined with insufficient knowledge on desorption and regeneration capacity of biosorbents (mostly used in laboratory scale) requires more large-scale biosorption experiments in order to adequately choose a type of biomass but also a polymeric support for an efficient treatment process.

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Cellulosic Substrates for Removal of Pollutants From Aqueous Systems: A Review. 2. Dyes

Hubbe

Hasan²,

Ducoste³

2012

BioResources

116

111

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Bioaccumulation of azo dye using immobilised beads of Aspergillus fumigatus

Cited by 4 publications

References 23 publications

Bioreductive molecular probe: fluorescence signalling upon reduction of an azo group

Bioreductive molecular probe: fluorescence signalling upon reduction of an azo group

Polysaccharides as Support for Microbial Biomass-Based Adsorbents with Applications in Removal of Heavy Metals and Dyes

Cellulosic Substrates for Removal of Pollutants From Aqueous Systems: A Review. 2. Dyes

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