Kundu, Monika and Bhardwaj, Hema and Pandey, Manoj Kumar and Krishnan, Prameela and Kotnala, R. K. and Sumana, Gajjala (2019) Development of electrochemical biosensor based on CNT-Fe3O4 nanocomposite to determine formaldehyde adulteration in orange juice. Journal of Food Science and Technology, 56 (4). pp. 1829-1840. ISSN 0022-1155

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An electrochemical biosensor was developed to determine formaldehyde (HCHO) adulteration commonly found in food. The current responses of various electrodes based on multiwalled carbon nanotubes (CNTs) and synthesized nanocomposite (CNT-Fe3O4) were measured using cyclic voltammetry. The nanocomposite based biosensor shows comparatively high sensitivity (527 mu Amg/L(-1)cm(-2)), low detection limit (0.05mg/L) in linear detection range 0.05-0.5mg/L for formaldehyde detection using formaldehyde dehydrogenase (FDH) enzyme. In real sample analysis, the low obtained RSD values (less than 1.79) and good recovery rates (more than 90%) signify an efficient and precise sensor for the selective quantification of formaldehyde in orange juice. The developed biosensor has future implications for determining formaldehyde adulteration in citrus fruit juices and other liquid foods in agri-food chain to further resolve global food safety concerns, control unethical business practices of adulteration and reduce the widespread food borne illness outbreaks.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Springer Verlag.
Subjects: Food Science & Technology
Depositing User: Mr. Yogesh Joshi
Date Deposited: 06 Feb 2020 10:20
Last Modified: 06 Feb 2020 10:20
URI: http://npl.csircentral.net/id/eprint/4146

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