Emerging graphene-based sensors for the detection of food adulterants and toxicants � A review

Raghavan, VS and O'Driscoll, B and Bloor, JM and Li, B and Katare, P and Sethi, J and Gorthi, SS and Jenkins, D (2021) Emerging graphene-based sensors for the detection of food adulterants and toxicants � A review. In: Food Chemistry, 355 .

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Abstract

The detection of food adulterants and toxicants can prevent a large variety of adverse health conditions for the global population. Through the process of rapid sensing enabled by deploying novel and robust sensors, the food industry can assist in the detection of adulterants and toxicants at trace levels. Sensor platforms which exploit graphene-based nanomaterials satisfy this requirement due to outstanding electrical, optical and thermal properties. The materials� facile conjugation with linkers and biomolecules along with the option for further enhancement using nanoparticles results in highly sensitive and selective sensing characteristics. This review highlights novel applications of graphene derivatives for detection covering three important approaches; optical, electrical (field-effect) and electrochemical sensing. Suitable graphene-based sensors for portable devices as point-of-need platforms are also presented. The future scope of these sensors is discussed to showcase how these emerging techniques will disrupt the food detection sector for years to come. © 2021 Elsevier Ltd

Item Type:	Journal Article
Publication:	Food Chemistry
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd
Keywords:	Graphene oxide, Food adulterant; Food industries; Food toxicants; Global population; Graphene derivative; Graphene-based sensors; Health condition; Portable device; Robust sensor; Trace level, Portable equipment
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	20 Apr 2021 11:29
Last Modified:	20 Apr 2021 11:29
URI:	http://eprints.iisc.ac.in/id/eprint/68619

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