Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities.

Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities. Research Abstract Details 

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Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities. Abstract Text:

Yuanbiao Qiao,Fangfang Jian,Huanqing Yu,Lihong Hu,

Functional composite films made from lecithin micelles and the two heme proteins of met-myoglobin (Mb) and met-hemoglobin (Hb) are reported in this paper. Proteins in functional composite films have much higher rates of electron transfer than proteins in solutions on carbon paste (CP) electrodes. Cyclic voltammograms (CVs) all give a pair of well-defined and quasi-reversible peaks, corresponding to the heme FeIII/FeII redox couple of proteins. Differential pulse voltammograms (DPVs) also show the same formal potential (E0') values of proteins under identical conditions. Electronic and vibrational spectra indicate that proteins in these films are not denatured, but their conformational differences from native states may exist. The E0' value for Mb in the lecithin film is found to be pH dependent. The Mb lecithin film can catalytically reduce O2 and H2O2, and its analytical application to H2O2 determination is established.

Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities. Publishing Authors By Initials

Y Qiao,F Jian,H Yu,L Hu,

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Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of colloid and interface science

VOLUME: 315

Page Numbers: 537-43

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ISSN: 0021-9797

DAY: 20

MONTH: 08

YEAR: 2007

Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Composite films of lecithin and heme proteins with electrochemical and electrocatalytic activities.

AFFILIATION: New Materials and Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology, 266042 Qingdao Shandong, People's Republic of China.

Country: United States

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MEDLINETA: J Colloid Interface Sci

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