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Determination of Hydrogen Peroxide Scavenging Activity of Phenolic Acids by Employing Gold Nanoshells Precursor Composites as Nanoprobes by Xiaoyuan Ma; Hui Li; Jian Dong; Weiping Qian is a Agricultural and Biological Sciences article available to read on EtoBox.
What is Determination of Hydrogen Peroxide Scavenging Activity of Phenolic Acids by Employing Gold Nanoshells Precursor Composites as Nanoprobes about?
A series of phenolic acids were tested for their ability to scavenge hydrogen peroxide (H 2 O 2 ) by using a novel enzyme-free, spectrophotometry assay. Gold nanoshells (GNSs) precursor composites were selected as the optical nanoprobes. The approach was based on the H 2 O 2 -induced growth of GNSs, which combines nanoscience with food/health research as an innovative detection scheme. The addition of phenolic acids inhibits the formation of complete GNSs and the corresponding peak wavelength changes rationally, which could be used as an optical signature. Among the tested samples, caffeic acid is found to be the most efficient H 2 O 2 -scavenger with its H 2 O 2 -scavenging activity being 125 Â 10 À3 lM À1 , whereas trans-cinnamic acid exhibits the weakest activity (0.73 Â 10 À3 lM À1 ). Results obtained were considered on the basis of structure-activity relationships. Additionally, several tea and herb extracts were also evaluated. The presented wavelength-based detection method shows superiority in evaluating coloured samples, which avoids background interference compared with the conventional absorbancebased optical methods.
Who reads Determination of Hydrogen Peroxide Scavenging Activity of Phenolic Acids by Employing Gold Nanoshells Precursor Composites as Nanoprobes?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- Xiaoyuan Ma; Hui Li; Jian Dong; Weiping Qian
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0308-8146)
- Published
- 2011
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)