Electrochemical methods for food and drink analysis

Mannino, Saverio; Wang, Joseph

doi:10.1002/elan.1140040903

Cited by 39 publications

(15 citation statements)

References 74 publications

(2 reference statements)

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“…The electroanalytical methods, especially used in the determination of lead and cadmium [13,14], are seldom proposed, even if electrochemical methods are widely employed for food and drink analysis, as highlighted by Mannino and Wang [15].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals in Matrices of Food Interest: Sequential Voltammetric Determination at Trace and Ultratrace Level of Copper, Lead, Cadmium, Zinc, Arsenic, Selenium, Manganese and Iron in Meals

Locatelli

2004

Electroanalysis

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The voltammetric methods are very suitable and versatile techniques for the simultaneous metal determination in complex matrices. The present work, regarding the sequential determination of Cu(II), Pb(II), Cd(II), Zn(II) by square-wave anodic stripping voltammetry (SWASV), As(III), Se(IV) by square-wave cathodic stripping voltammetry (SWCSV) and Mn(II), Fe(III) by square-wave voltammetry (SWV) in matrices involved in foods and food chain as wholemeal, wheat and maize meal, are an interesting example of the possibility to sequentially determine each single element in real samples. Besides the set up of the analytical method, particular attention is aimed either at the problem of possible signal interference or to show that, using the peak area A p as instrumental datum, it is possible to achieve lower limits of detection. The analytical procedure was verified by the analysis of the standard reference materials: Wholemeal BCR-CRM 189, Wheat Flour NIST-SRM 1567a and Rice Flour NIST-SRM 1568a. Precision, as repeatability, and accuracy, expressed as relative standard deviation and relative error, respectively, were lower than 6% in all cases. In the presence of reciprocal interference, the standard addition method considerably improved the resolution of the voltammetric technique. Once set up on the standard reference materials, the analytical procedure was transferred and applied to commercial meals sampled on market for sale. A critical comparison with spectroscopic measurements is also discussed.

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Section: Introductionmentioning

confidence: 99%

Heavy Metals in Matrices of Food Interest: Sequential Voltammetric Determination at Trace and Ultratrace Level of Copper, Lead, Cadmium, Zinc, Arsenic, Selenium, Manganese and Iron in Meals

Locatelli

2004

Electroanalysis

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“…Now-adays, sensors for medical and food analysis are becoming increasingly essential for many reasons. In case of medical application, electrochemical sensors have been reported for diagnosis of genetic disorders like SNPs [14], detection of pathogens [15 -21], forensic applications [4 -7], drug response measurement [22,23], and in case of food analysis electrochemical biosensors have been reported for analyzing food and beverages [24,25], for detection of GMO content in food [26], for measuring the freshness of food [27], etc. Still, there are many avenues to be opened in these two fields where electrochemical sensors will find their applications.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Biosensors for Medical and Food Applications

2008

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Sensing and quantification of DNA and proteins are becoming increasingly important in biochemistry, medicine and biotechnology. Traditional analytical techniques are lagging behind the demand for more information in less time, at a lower cost. An important step forward in this pursuit is to identify an analyte using its electrochemical behavior and to convert its presence and concentration into perceivable and distinct electrical signals. This review covers the strategies for electrochemical sensing of biomolecules, mainly, DNA and proteins by label-based and label-free approaches using disposable electrochemical printed chips and carbon nanotube based field effect transistors. Issues, such as ease of preparation, robustness, sensitivity, and realization of mass production of the detection strategies are also considered. A good coverage of the published literature, mostly, a wide treatment of original research articles reporting novel principles has been made. Finally, this review may help the researchers in developing an understanding of miniaturized electrochemical biosensors and their possible applications in medical and food science, with directions for future research.

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“…Several books and reviews are available documenting the large and widespread application of SA in conjunction with the various versions of mercury and solid electrodes of conventional *Address correspondence to this author at the Department of Physical Chemistry, University of Venice, Calle Larga S. Marta, 2137, 30123 Venice, Italy; E-mail: sig@unive.it dimensions, also called conventional electrodes -that is, electrodes for which planar diffusion applies [3,[10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%