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Liberato PA, Okumura LL, de Souza Silva AF, Aleixo H, Silva JG, Diniz JA, Oliveira AF. Direct determination of boscalid in grape samples by differential pulse voltammetry using a carbon paste electrode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5195-5203. [PMID: 34673852 DOI: 10.1039/d1ay01134k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A new methodology to determine directly the fungicide boscalid (BSC) was developed and successfully applied in red grape 100% juice, peel extracts, pulp and purple grape seeds (Vitis labrusca L.) with a working carbon paste electrode (CPE) without sample preparation. Cyclic voltammetry (CV) indicated the presence of an irreversible cathodic process of BSC at -1.21 V vs. Ag|AgCl (KCl 3.0 mol L-1) in a solution of 0.100 mol L-1 HCl/acetone 70 : 30 (v/v). This behavior was also observed using Square Wave Voltammetry (SWV). The Differential Pulse Voltammetry (DPV) technique proved to be more sensitive and with higher selectivity for BSC quantification. The influence of pH on the reduction of BSC was investigated in Britton-Robinson Buffer (BRB), 0.01 mol L-1 (pH 2.00-12.00). The limit of detection (LOD) values obtained from calibration curves for different samples were as follows: 0.107 mg L-1 for deionized water; 0.146 mg L-1 for red grape 100% juice; 0.922 mg kg-1 for peel extracts; 0.818 mg kg-1 for grape pulp and 0.691 mg kg-1 for grape seeds. The corresponding Limit of Quantification (LOQ) values for the same samples were as follows: 0.358 mg L-1; 0.486 mg L-1; 2.87 mg kg-1; 2.73 mg kg-1 and 2.51 mg kg-1, respectively. In addition, the recovery rates for the different concentration levels in the investigated range varied between 97.13 and 103.4%. All tests performed with the samples did not require extraction or pre-concentration steps of BSC, resulting in a fast, simple and cheap methodology.
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Affiliation(s)
- Priscila Azevedo Liberato
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Holfs, Viçosa, 3650-900, MG, Brazil.
| | - Leonardo Luiz Okumura
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Holfs, Viçosa, 3650-900, MG, Brazil.
| | | | - Herbert Aleixo
- Universidade Federal dos Vales do Jequitinhonha e Mucuri, Av. Universitária, Unaí, 38610-000, MG, Brazil
| | - Júnio Gonçalves Silva
- Departamento de Química, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, 31270-901, MG, Brazil
| | - Juliana Aparecida Diniz
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Holfs, Viçosa, 3650-900, MG, Brazil.
| | - André Fernando Oliveira
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Holfs, Viçosa, 3650-900, MG, Brazil.
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Yıkmış S, Bozgeyik E, Levent O, Aksu H. Organic cherry laurel (
Prunus laurocerasus
) vinegar enriched with bioactive compounds with ultrasound technology using artificial neural network (ANN) and response surface methodology (RSM): Antidiabetic, antihypertensive, cytotoxic activities, volatile profile and optical microstructure. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15883] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Seydi Yıkmış
- Department of Food Technology Tekirdag Namik Kemal University Tekirdag Turkey
| | - Esra Bozgeyik
- Vocational School of Health Services Adiyaman University Adiyaman Turkey
| | - Okan Levent
- Department of Food Engineering Faculty of Engineering Inonu University Malatya Turkey
| | - Harun Aksu
- Department of Food Hygiene & Technology Istanbul University‐Cerrahpaşa Istanbul Turkey
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Sridhar K, Charles AL. Fortification using grape extract polyphenols – a review on functional food regulations. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kandi Sridhar
- Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and Technology 1 Shuefu Road Neipu Pingtung912 01Taiwan
| | - Albert Linton Charles
- Department of Tropical Agriculture and International Cooperation National Pingtung University of Science and Technology 1 Shuefu Road Neipu Pingtung912 01Taiwan
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