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Cited by 16

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Tailor-made biocatalysts based on scarcely studied acidic horseradish peroxidase for biodegradation of reactive dyes

Janović, Barbara S., Mićić Vićovac, Milica Lj., Vujčić, Zoran M., Vujčić, Miroslava T.·2017·Environmental Science and Pollution Research
DOI 10.1007/s11356-016-8100-4
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Abstract

Peroxidases (EC 1.11.1.7) have enormous biotechnological applications. Usage of more abundant, basic isoforms of peroxidases in diagnostic kits and/or in immunochemistry has led to under exploitation and disregard of horseradish peroxidase (HRP) acidic isoforms. Therefore, acidic horseradish peroxidase (HRP-A) isoenzyme was used for the preparation of a biocatalyst with improved ability in dye decolorization. Ten biocatalysts were prepared by covalent binding of enzyme to chitosan and alginate, adsorption followed by cross-linking on inorganic support (aluminum oxide), and encapsulation in spherical calcium alginate beads via polyethylene glycol. Model dyes of 50 to 175 mg l -1 were removed by the biocatalysts. Among the tested biocatalysts, the three with the highest specific activity and biodegradation rate were further studied (Chitosan-HRP, Al-Gel-HRP and Al-HRP-Gel). The impact of hydrogen peroxide concentration on dye decolorization was examined on the Chitosan-HRP biocatalyst, since the HRP is susceptible to inhibition/inactivation by high H 2 O 2 . On the other hand, H 2 O 2 is needed as a co-substrate for the HRP, and the H 2 O 2 /dye ratio can greatly influence decolorization efficiency. Concentrations of H 2 O 2 ranging from 0.22 to 4.4 mM showed no difference in terms of impact on the biocatalyst decolorization efficiency. The high decolorization efficiency of the biocatalysts was validated by the removal of 25 and 100 mg l -1 anthraquinone (Remazol Brilliant Blue…

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Crossref · 10.1007/s11356-016-8100-4

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Metadata

Authors
Janović, B. S., Mićić Vićovac, M. L., Vujčić, Z. M., & Vujčić, M. T.
Venue
Environmental Science and Pollution Research
Publisher
Springer Science and Business Media LLC
Published
2016-12-01
Volume
24
Issue
4
Pages
3923-3933
ISSN
  • 0944-1344
  • 1614-7499
DOI
10.1007/s11356-016-8100-4
Cited by
16
References
45
Language
en
Licence
www.springer.com/tdm (unspecified)
Funders
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja (172048)

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