Visualized sensing of erythritol using a simple enzyme-free catechol-based hydrogel film

Based on the versatile properties of bio-derived materials, non-enzymatic assays in combination with electronic devices have attracted increasing interest. Here, we report a novel enzyme-free visualization approach for the detection of erythritol, which is a zero-calorie natural sweetener and serves as an ideal sucrose substitute for diabetics or overweight people who need sugar control. The recognition element of the electrochemical biosensor was constructed by catechol modification on a chitosan-based hydrogel film. The signal transduction was achieved by the competitive binding assay of sweeteners. The results show that 2-fluorophenylboronic acid (FPBA) can form a cyclic boronate ester with the ortho-hydroxyls of both reduced catechol and oxidized quinone, impeding the electron transfer and leading to redox signal attenuation. The addition of sweeteners caused a competitive reaction resulting in bonding between the 1,2-diols and FPBA moieties, and in the recovery of the redox signals. Importantly, the pattern of redox signal changes of catechol can be detected optically, as the oxidized quinone state is darker in color than the reduced catechol state. Using a simple cell phone imaging application, we demonstrate that erythritol can be distinguished from other sweeteners in real samples using the oxidized catechol-Chit0/agarose hydrogel film. Thus, we envision that this method could allow diabetics and people who need to control their sugar intake to detect whether the product contains only erythritol in the field or at home. In addition, this work further illustrates the potential of bio-derived materials for performing redox-based functions and enzyme-free visualization assays.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:16

Enthalten in:

Analytical methods : advancing methods and applications - 16(2024), 11 vom: 14. März, Seite 1686-1696

Sprache:

Englisch

Beteiligte Personen:

Zhang, Xinyue [VerfasserIn]
Wu, Si [VerfasserIn]
Feng, Tao [VerfasserIn]
Yan, Yuanhao [VerfasserIn]
Wu, Shijing [VerfasserIn]
Chen, Yinyu [VerfasserIn]
Wang, Yu [VerfasserIn]
Wang, Qingmiao [VerfasserIn]
Hu, Ning [VerfasserIn]
Wang, Li [VerfasserIn]

Links:

Volltext

Themen:

57-50-1
Catechol
Catechols
Erythritol
Hydrogel film
Journal Article
LF3AJ089DQ
Methylgalactosides
Quinones
RA96B954X6
Sucrose
Sweetening Agents

Anmerkungen:

Date Completed 15.03.2024

Date Revised 15.03.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1039/d3ay02131a

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369109503