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Development of electroanalytical methods employing a boron-doped diamond electrode for simultaneous determination of sweeteners and colorants in food samples

Grant number: 12/08180-5
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2012
Effective date (End): June 30, 2014
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Orlando Fatibello Filho
Grantee:Patrícia Batista Deroco
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil


To meet the needs of the modern consumer food industry has increased the variety of foods available in supermarkets and it was also an increase in the use of many different types of food additives. However, the use of additives such as sweeteners and dyes, is a controversial issue, with claims that they can trigger allergies and can be toxic and carcinogenic. Therefore, there must be a monitoring and / or strict quality control of products containing them, and for this it is important to develop analytical procedures are simple, fast and accurate for the quantification of them. In this master thesis will be developed electroanalytical procedures for the simultaneous determination of two different types of food additives, sweeteners and dyes, using a system of flow injection analysis with amperometric detection of multiple pulses and diamond electrodes doped with boron (BDD) or glassy carbon working electrode.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DEROCO, PATRICIA B.; MEDEIROS, ROBERTA A.; ROCHA-FILHO, ROMEU C.; FATIBELLO-FILHO, ORLANDO. Selective and simultaneous determination of indigo carmine and allura red in candy samples at the nano-concentration range by flow injection analysis with multiple pulse amperometric detection. Food Chemistry, v. 247, p. 66-72, MAY 1 2018. Web of Science Citations: 10.
DEROCO, PATRICIA B.; MEDEIROS, ROBERTA A.; ROCHA-FILHO, ROMEU C.; FATIBELLO-FILHO, ORLANDO. Simultaneous voltammetric determination of aspartame and acesulfame-K in food products using an anodically pretreated boron-doped diamond electrode. ANALYTICAL METHODS, v. 7, n. 5, p. 2135-2140, 2015. Web of Science Citations: 18.
DEROCO, PATRICIA BATISTA; VICENTINI, FERNANDO CAMPANHA; OLIVEIRA, GEISER GABRIEL; ROCHA-FILHO, ROMEU C.; FATIBELLO-FILHO, ORLANDO. Square-wave voltammetric determination of hydroxychloroquine in pharmaceutical and synthetic urine samples using a cathodically pretreated boron-doped diamond electrode. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 719, p. 19-23, APR 1 2014. Web of Science Citations: 31.

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