Determination of Chlorophenol in Environmental Samples Using a Voltammetric Biosensor Based on Hybrid Nanocomposite

Arruda, Beatriz S.; Souza, Elizabeth Fátima de; Nogueira, Alessandra B.; Teschke, O.; Bonugli, L.O.; Etchegaray, Augusto

doi:10.21577/0103-5053.20160282

Cited by 10 publications

(11 citation statements)

References 29 publications

(31 reference statements)

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“…In addition, novel approaches have made possible the miniaturization of electrodes and they generate lower residues, thus contributing to green chemistry. 9 These devices use a biological molecule as the recognizing element, mostly enzymes, 10,11 as they tend to be less expensive than antibodies or DNA fragments, for instance. Considering the use of oxireductases as the recognizing element, the enzyme tyrosinase is widely used since it has excellent selectivity to phenols and it is readily obtained from vegetables like yam.…”

Section: Introductionmentioning

confidence: 99%

“…15 There is a wide variety of metallic nanoparticles, which can be found in the literature, as supports for biosensor construction, including gold, 16 platinum, 17 bismuth 18 and silver 19 as well as zinc 11 and manganese oxides. 20 However, the use of magnetic nanoparticles based on iron oxides has the benefit of producing adsorptive materials that are responsive to magnetic field, which can be re-dispersed if magnetism is removed, thus offering the advantage for magnetic separation.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Determination of Different Phenolic Compounds Using Electrochemical Biosensor and Multivariate Calibration

Dantas

Nogueira

Etchegaray

et al. 2017

J. Braz. Chem. Soc.

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Phenolic compounds are important environmental contaminants due to their high toxicity and persistence in the environment. The use of enzyme-based electrochemical biosensors is a simple, sensitive and low-cost alternative for the determination of these pollutants in contaminated waters. However, in most cases, it is impossible to detect specific compounds in a mixture of phenols due to signal-overlap, as the instruments operate at very close potentials, given that the system is based on a single enzyme to detect similar structures. In order to overcome this problem, in the present work we have successfully used multivariate calibration with partial least squares (PLS) for the simultaneous determination of hydroquinone and guaiacol by a tyrosinase-based biosensor that was assembled using an enzyme extract from yam. The use of PLS allowed us to work with a large number of voltammograms, leading to a single mathematical model for the simultaneous determination of phenols of similar structure in real samples with concentration values of mmol L -1 .

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Different Phenolic Compounds Using Electrochemical Biosensor and Multivariate Calibration

Dantas

Nogueira

Etchegaray

et al. 2017

J. Braz. Chem. Soc.

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“…The important aspect in connecting Chitosan with various chemical groups is the abundance of functional groups and pH solubility. Many applications of chitosan-based electrochemical enzyme biosensor were reported, including for dopamine release in the brain of rats (Njagi et al,2008), detection of hydrogen peroxide via catalase immobilized on chitosan-β-cyclodextrin (Dong et al, 2017) and chlorophenol determination via laccase immobilized on ZnO-Chitosan nanocomposite (Mendes et al, 2017).…”

Section: Chitosan-based Electrochemical Enzyme Biosensormentioning

confidence: 99%

Marine Biological Macromolecules as Matrix Material for Biosensor fabrication

Bedi¹,

Srivastava²,

Srivastava³

et al. 2022

Preprint

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The Ocean covers two-third of our planet and has great biological heterogeneity. Marine organisms like algae, vertebrates, invertebrates, and microbes are known to provide many natural products with biological activities as well potent sources of biomaterials for therapeutic, biomedical, biosensors, and climate stabilization. Over the years, the field of biosensors have gained huge attention due to their extraordinary ability in providing early diseases diagnosis and treatment as well as environmental pollutants. This review focuses on various biomaterials (Carbohydrtae polymers, proteins, polyacids etc) of marine origin such as Alginate, Chitin, Chitosan, Fucoidan, Carrageenan, Chondroitin Sulfate (CS), Hyaluronic acid (HA), Collagen, marine pigments, marine nanoparticles, Hydroxyapatite (HAp), Biosilica, lectins, and marine whole cell. Further, it mentions the source of such marine biomaterials and their promising evolution for the development of biosensors that are potent to be employed in the biomedical, environmental science and agricultural sciences domains.

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“…Biosensors to detect catechol as well as other phenolic compounds were based on immobilized tyrosinase on a film of chitosan-nickel nanoparticles (Yang et al 2012a). A biosensor for detection of chlorophenol that includes immobilized laccase on ZnO-chitosan nanocomposite was prepared by Mendes et al (2017). Nanocomposite of functionalized graphene oxide (enriched with carboxylic moieties)-polypyrrole-chitosan film was constructed to detect hydrogen peroxide using screen-printed carbon electrodes (Akhtar et al 2017).…”

Section: Biosensorsmentioning

confidence: 99%

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

Merzendorfer

Cohen

2019

Biologically-Inspired Systems

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Chitin is a linear polysaccharide of N-acetylglucosamine, which is highly abundant in nature and mainly produced by marine crustaceans. Chitosan is obtained by hydrolytic deacetylation. Both polysaccharides are renewable resources, simply and cost-effectively extracted from waste material of fish industry, mainly crab and shrimp shells. Research over the past five decades has revealed that chitosan, in particular, possesses unique and useful characteristics such as chemical versatility, polyelectrolyte properties, gel-and film-forming ability, high adsorption capacity, antimicrobial and antioxidative properties, low toxicity, and biocompatibility and biodegradability features. A plethora of chemical chitosan derivatives have been synthesized yielding improved materials with suggested or effective applications in water treatment, biosensor engineering, agriculture, food processing and storage, textile additives, cosmetics fabrication, and in veterinary and human medicine. The number of studies in this research field has exploded particularly during the last two decades. Here, we review recent advances in utilizing chitosan and chitosan derivatives in different technical, agricultural, and biomedical fields.

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Determination of Chlorophenol in Environmental Samples Using a Voltammetric Biosensor Based on Hybrid Nanocomposite

Cited by 10 publications

References 29 publications

Simultaneous Determination of Different Phenolic Compounds Using Electrochemical Biosensor and Multivariate Calibration

Simultaneous Determination of Different Phenolic Compounds Using Electrochemical Biosensor and Multivariate Calibration

Marine Biological Macromolecules as Matrix Material for Biosensor fabrication

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

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