Structure and Antioxidant Activity of Soy Protein Isolate-Dextran Conjugates Obtained by TiO2 Photocatalysis
Joint Authors
Zhou, Xiaosong
Jin, Bei
Li, Bing
Chen, Caiyan
Zhang, Xiaosa
Chen, Siqiao
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-01
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The aim of this study was to investigate the structural characteristics and antioxidant activities of soy protein isolate- (SPI-) dextran conjugates obtained by TiO2 photocatalysis treatment.
Results revealed that the UV-vis absorption and the fluorescence intensity increased as the photocatalytic power increased (P<0.05).
Higher photocatalytic power could promote the extent of glycation and the formation of high molecular weight SPI-dextran conjugates, which were evidenced by free amino group content and sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis.
The Fourier transform infrared (FT-IR) spectra suggested that the amide I, II, and III bands of SPI were altered by the glycation induced by TiO2 photocatalysis.
Moreover, significant changes of secondary structure occurred in SPI-dextran conjugates.
The α-helix, β-sheet, β-turns, and random coil were changed from approximately 10.6%, 37.9%, 12.9%, and 38.6% to 3.8%, 10.4%, 17.7%, and 68.8%, respectively, after treatment at photocatalytic power of 1000 W.
In addition, SPI-dextran conjugates obtained by TiO2 photocatalysis treatment exhibited high hydroxyl radical scavenging activity and possessed increased reducing power.
All data indicated that TiO2 photocatalysis was an efficient method for promoting protein-polysaccharide copolymerisation.
American Psychological Association (APA)
Jin, Bei& Zhou, Xiaosong& Li, Bing& Chen, Caiyan& Zhang, Xiaosa& Chen, Siqiao. 2015. Structure and Antioxidant Activity of Soy Protein Isolate-Dextran Conjugates Obtained by TiO2 Photocatalysis. BioMed Research International،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1054381
Modern Language Association (MLA)
Jin, Bei…[et al.]. Structure and Antioxidant Activity of Soy Protein Isolate-Dextran Conjugates Obtained by TiO2 Photocatalysis. BioMed Research International No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1054381
American Medical Association (AMA)
Jin, Bei& Zhou, Xiaosong& Li, Bing& Chen, Caiyan& Zhang, Xiaosa& Chen, Siqiao. Structure and Antioxidant Activity of Soy Protein Isolate-Dextran Conjugates Obtained by TiO2 Photocatalysis. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1054381
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1054381