Rapid and sensitive determination of ascorbic acid based on label-free silver triangular nanoplates

Wenteng Qiao; Yushen Liu; Xiaotong Fan; Yunfeng Yang; Wenmei Liu; Luliang Wang; Zhenhua Hu; Fangjie Liu; Chengwu Jin; Xuemei Sun; Daotan Liu; Quanwen Liu; Lin Li

Current Research in Food Science (Jan 2023)

Rapid and sensitive determination of ascorbic acid based on label-free silver triangular nanoplates

Wenteng Qiao,
Yushen Liu,
Xiaotong Fan,
Yunfeng Yang,
Wenmei Liu,
Luliang Wang,
Zhenhua Hu,
Fangjie Liu,
Chengwu Jin,
Xuemei Sun,
Daotan Liu,
Quanwen Liu,
Lin Li

Affiliations

Wenteng Qiao: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Yushen Liu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Bio-Nanotechnology Research Institute, Ludong University, Yantai, 264025, Shandong, China; Corresponding author. College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Xiaotong Fan: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Yunfeng Yang: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Wenmei Liu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Luliang Wang: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Bio-Nanotechnology Research Institute, Ludong University, Yantai, 264025, Shandong, China
Zhenhua Hu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Bio-Nanotechnology Research Institute, Ludong University, Yantai, 264025, Shandong, China
Fangjie Liu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Bio-Nanotechnology Research Institute, Ludong University, Yantai, 264025, Shandong, China
Chengwu Jin: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Xuemei Sun: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Daotan Liu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China
Quanwen Liu: College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Corresponding author.
Lin Li: Yantai Food and Drug Inspection and Testing Center, Yantai 264035, Shandong, China; Corresponding author.

Journal volume & issue: Vol. 7
p. 100548

Abstract

Read online

In this study, a new method for the detection of ascorbic acid (AA) was proposed. It was based on the protective effect of AA on silver triangular nanoplates (Ag TNPs) against Cl− induced etching reactions. Cl− can attack the corners of Ag TNPs and etch them, causing a morphological shift from triangular nanoplates to nanodiscs. As a result, the solution changes color from blue to yellow. However, in the presence of AA, the corners of Ag TNPs can be protected from Cl− etching, and the blue color of the solution remains unchanged. Using this effect, a selective sensor was designed to detect AA in the range of 0–40.00 μM with a detection limit of 2.17 μM. As the concentration of AA varies in this range, color changes from yellow to blue can be easily observed, so the designed sensor can be used for colorimetric detection. This method can be used to analyze fruit juice samples.

Published in Current Research in Food Science

ISSN: 2665-9271 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Home economics: Nutrition. Foods and food supply; Technology: Chemical technology: Food processing and manufacture
Website: https://www.journals.elsevier.com/current-research-in-food-science

About the journal

Abstract

Keywords