Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution
Tyrosinase encapsulated silica aerogel (TESA) was synthesized via an alcohol-free colloidal sol–gel route at room temperature and at neutral pH. Characterization on TESA indicated that 98% of enzyme was effectively loaded and located inside the aerogel network. TESA without solvent extraction showed...
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my.utm.288752019-01-31T11:30:13Z http://eprints.utm.my/id/eprint/28875/ Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution Sani, Suriani Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton QD Chemistry Tyrosinase encapsulated silica aerogel (TESA) was synthesized via an alcohol-free colloidal sol–gel route at room temperature and at neutral pH. Characterization on TESA indicated that 98% of enzyme was effectively loaded and located inside the aerogel network. TESA without solvent extraction showed higher tyrosinase activity than TESA extracted by amyl acetate/acetone (v/v:1/1). Stability of tyrosinase in TESA was enhanced towards extreme temperature, acidic and basic conditions. Optimization study indicates that 500 U enzyme/g silica aerogel; aged for 2 days, showed superior performance in the oxidation of catechol. The activity of TESA was remarkably enhanced; which was active at a wider temperature (up to 80 °C) and pH range (4–9). In contrast, free tyrosinase was totally inactive at these pH values and temperature >55 °C. TESA successfully removed about 90% of phenol in aqueous solution after 3 h of contact time with excellent reusability. Springer Science+Business Media LLC 2011-07 Article PeerReviewed Sani, Suriani and Mohd. Muhid, Mohd. Nazlan and Hamdan, Halimaton (2011) Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution. Journal of Sol-Gel Science and Technology, 59 (1). pp. 7-18. ISSN 0928-0707 http://dx.doi.org/10.1007/s10971-011-2454-3 DOI:10.1007/s10971-011-2454-3 |
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QD Chemistry Sani, Suriani Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
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Tyrosinase encapsulated silica aerogel (TESA) was synthesized via an alcohol-free colloidal sol–gel route at room temperature and at neutral pH. Characterization on TESA indicated that 98% of enzyme was effectively loaded and located inside the aerogel network. TESA without solvent extraction showed higher tyrosinase activity than TESA extracted by amyl acetate/acetone (v/v:1/1). Stability of tyrosinase in TESA was enhanced towards extreme temperature, acidic and basic conditions. Optimization study indicates that 500 U enzyme/g silica aerogel; aged for 2 days, showed superior performance in the oxidation of catechol. The activity of TESA was remarkably enhanced; which was active at a wider temperature (up to 80 °C) and pH range (4–9). In contrast, free tyrosinase was totally inactive at these pH values and temperature >55 °C. TESA successfully removed about 90% of phenol in aqueous solution after 3 h of contact time with excellent reusability. |
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Article |
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Sani, Suriani Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton |
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Sani, Suriani Mohd. Muhid, Mohd. Nazlan Hamdan, Halimaton |
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Sani, Suriani |
title |
Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
title_short |
Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
title_full |
Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
title_fullStr |
Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
title_full_unstemmed |
Design, synthesis and activity study of tyrosinase encapsulated silica aerogel (TESA) biosensor for phenol removal in aqueous solution |
title_sort |
design, synthesis and activity study of tyrosinase encapsulated silica aerogel (tesa) biosensor for phenol removal in aqueous solution |
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Springer Science+Business Media LLC |
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2011 |
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http://eprints.utm.my/id/eprint/28875/ http://dx.doi.org/10.1007/s10971-011-2454-3 |
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