Loading…
A fluorogenic capped mesoporous aptasensor for gluten detection
Celiac disease is a complex and autoimmune disorder caused by the ingestion of gluten affecting almost 1% of global population. Nowadays an effective treatment does not exist, and the only way to manage the disease is the removal of gluten from the diet. Owing the key role played by gluten, clear an...
Saved in:
Published in: | Analytica chimica acta 2021-02, Vol.1147, p.178-186 |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Celiac disease is a complex and autoimmune disorder caused by the ingestion of gluten affecting almost 1% of global population. Nowadays an effective treatment does not exist, and the only way to manage the disease is the removal of gluten from the diet. Owing the key role played by gluten, clear and regulated labelling of foodstuff and smart methods for gluten detection are needed to fight frauds on food industry and to avoid the involuntary ingestion of this protein by celiac patients. On that scope, the development of a novel detection system of gluten is here presented. The sensor consists of nanoporous anodic alumina films loaded with a fluorescent dye and capped with an aptamer that recognizes gliadin (gluten’s soluble proteins). In the presence of gliadin, aptamer sequences displace from the surface of anodic alumina resulting in pore opening and dye delivery. The dispositive shows a limit of detection (LOD) of 100 μg kg−1 of gliadin, good selectivity and a detection time of approximately 60 min. Moreover, the sensor is validated in real food samples. This novel probe allows fast gluten detection through a simple signalling process with potential use for food control.
[Display omitted]
•A novel detection system of gluten is here presented and validated in real samples.•The sensor consists of gated nanoporous material capped with an aptamer for gliadin.•Aptamers here used have been already proven to specifically recognise gliadin.•In gliadin’s presence, aptamer displace resulting in pore opening and dye delivery.•The sensor shows a limit of detection of 100 ppb of gliadin and good selectivity. |
---|---|
ISSN: | 0003-2670 1873-4324 |
DOI: | 10.1016/j.aca.2020.12.060 |