Analytical and Sample Preparation Techniques for the Determination of Food Colorants in Food Matrices

Color additives are widely used by the food industry to enhance the appearance, as well as the nutritional properties of a food product. However, some of these substances may pose a potential risk to human health, especially if they are consumed excessively and are regulated, giving great importance to their determination. Several matrix-dependent methods have been developed and applied to determine food colorants, by employing different analytical techniques along with appropriate sample preparation protocols. Major techniques applied for their determination are chromatography with spectophotometricdetectors and spectrophotometry, while sample preparation procedures greatly depend on the food matrix. In this review these methods are presented, covering the advancements of existing methodologies applied over the last decade.

Download Full-text

Sample Preparation Techniques for the Determination of Veterinary Drugs in Food Matrices

Comprehensive Sampling and Sample Preparation ◽

10.1016/b978-0-12-381373-2.00141-1 ◽

2012 ◽

pp. 405-414

Author(s):

P. Martos ◽

B. Shurmer

Keyword(s):

Sample Preparation ◽

Veterinary Drugs ◽

Food Matrices ◽

Preparation Techniques

Download Full-text

Methodologies and Results Concerning the Determination of Ocs And Pcbs From Fish Meat

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Food Science and Technology ◽

10.15835/buasvmcn-fst:2018.0004 ◽

2018 ◽

Vol 75 (2) ◽

pp. 109

Author(s):

Ana-Andreea CIOCA ◽

Olaf HEEMKEN ◽

Liora Mihaela COLOBATIU ◽

Marian MIHAIU

Keyword(s):

Sample Preparation ◽

Food Chain ◽

Third World ◽

Analytical Techniques ◽

Fish Food ◽

Chemical Substances ◽

Fish Meat ◽

The World ◽

Preparation Techniques

In the last decade, studies have been focusing on determinations of persistent organic pollutants (POPs), well known for being involved in human chronic diseases. Various approaches and methodologies are used in monitoring these chemical substances in fish food chain. Therefore, their development, functionality and efficiency are vital for consumers’ protection. The aim of this paper is to review recently published analytical techniques for sample preparation in the determination of POP residues such as organochlorine compounds (OCs) and polychlorinated biphenyls (PCBs). Limitations and advantages of sample preparation techniques are discussed and compared so that they can facilitate the decision of future analysts upon adequate protocols in individual laboratories. A list of the most common compounds quantified nowadays is displayed. In addition, results achieved in original papers are used to briefly describe the current situation on different continents, with third world countries undergoing more pollution than the rest of the world.

Download Full-text

Recent Developments in CE-MS Based Metabolomics

Current Analytical Chemistry ◽

10.2174/1573411016999200709133339 ◽

2020 ◽

Vol 16 ◽

Author(s):

Mustafa Çelebier ◽

Merve Nenni

Keyword(s):

Sample Preparation ◽

Scientific Information ◽

Analytical Techniques ◽

Living Organism ◽

Analytical Technique ◽

Ionic Compounds ◽

Recent Sample ◽

Recent Developments ◽

Endogenous Metabolites ◽

Preparation Techniques

Background: Metabolomics has gained importance in clinical applications over the last decade. Metabolomics studies are significant because the systemic metabolome is directly affected by disease conditions. Metabolome-based biomarkers are actively being developed for early diagnosis and to indicate the stage of specific diseases. Additionally, understanding the effect of an intervention on a living organism at the molecular level is a crucial strategy for understanding novel or unexpected biological processes. Results: The simultaneous improvements in advanced analytical techniques, sample preparation techniques, computer technology, and databank contents has enabled more valuable scientific information to be gained from metabolomics than ever before. With over 15,000 known endogenous metabolites, there is no single analytical technique capable of analyzing the whole metabolome. However, capillary electrophoresis-mass spectrometry (CE-MS) is a unique technique used to analyze an important portion of metabolites not accessible by liquid chromatography or gas chromatography techniques. The analytical capability of CE, combined with recent sample preparation techniques focused on extracting polar-ionic compounds, make CE-MS a perfect technique for metabolomic studies. Conclusion: Here, previous reviews of CE-MS based metabolomics are evaluated to highlight recent improvements in this technique. Specifically, we review papers from the last two years (2018 and 2019) on CE-MS based metabolomics. The current situation and the challenges facing metabolomic studies are discussed to reveal the high potential of CE-MS for further studies, especially in biomarker development studies.

Download Full-text

Sample preparation and analytical techniques for determination of polyaromatic hydrocarbons in soils

International Journal of Environmental Science and Technology ◽

10.1007/bf03325887 ◽

2005 ◽

Vol 2 (3) ◽

pp. 275-286 ◽

Cited By ~ 22

Author(s):

Z. Khan ◽

J. Troquet ◽

C. Vachelard

Keyword(s):

Sample Preparation ◽

Polyaromatic Hydrocarbons ◽

Analytical Techniques ◽

Hydrocarbons In Soils

Download Full-text

Analytical strategies of sample preparation for the determination of mercury in food matrices — A review

Microchemical Journal ◽

10.1016/j.microc.2015.02.012 ◽

2015 ◽

Vol 121 ◽

pp. 227-236 ◽

Cited By ~ 51

Author(s):

Sergio L.C. Ferreira ◽

Valfredo A. Lemos ◽

Laiana O.B. Silva ◽

Antonio F.S. Queiroz ◽

Anderson S. Souza ◽

...

Keyword(s):

Sample Preparation ◽

Analytical Strategies ◽

Food Matrices

Download Full-text

Advances in the Analysis of Veterinary Drug Residues in Food Matrices by Capillary Electrophoresis Techniques

Molecules ◽

10.3390/molecules24244617 ◽

2019 ◽

Vol 24 (24) ◽

pp. 4617 ◽

Cited By ~ 2

Author(s):

Raffaella Colombo ◽

Adele Papetti

Keyword(s):

Capillary Electrophoresis ◽

Sample Preparation ◽

Human Health ◽

Food Quality ◽

Potential Risk ◽

Analytical Techniques ◽

Veterinary Drug ◽

Quality And Safety ◽

Food Quality And Safety ◽

Food Matrices

In the last years, the European Commission has adopted restrictive directives on food quality and safety in order to protect animal and human health. Veterinary drugs represent an important risk and the need to have sensitive and fast analytical techniques to detect and quantify them has become mandatory. Over the years, the availability of different modes, interfaces, and formats has improved the versatility, sensitivity, and speed of capillary electrophoresis (CE) techniques. Thus, CE represents a powerful tool for the analysis of a large variety of food matrices and food-related molecules with important applications in food quality and safety. This review focuses the attention of CE applications over the last decade on the detection of different classes of drugs (used as additives in animal food or present as contaminants in food products) with a potential risk for animal and human health. In addition, considering that the different sample preparation procedures have strongly contributed to CE sensitivity and versatility, the most advanced sample pre-concentration techniques are discussed here.

Download Full-text

Comparison of Three Sample Preparation Techniques for Determination of Organic Bromide and Chloride in Halogenated Lipids by X-Ray Fluorescence Spectroscopy

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/63.4.709 ◽

1980 ◽

Vol 63 (4) ◽

pp. 709-712

Author(s):

Henry B S Conacher ◽

Rajinder K Chadha ◽

Gladys Lacroix

Keyword(s):

Thin Film ◽

Sample Preparation ◽

Fluorescence Spectroscopy ◽

Vegetable Oils ◽

X Ray ◽

Thin Film Technique ◽

High Concentrations ◽

Preparation Techniques

Abstract Three sample preparation techniques—thin-film, solution, and cellulose pellet—were applied to the determination of bromide in brominated lipids by X-ray fluorescence spectroscopy. Using brominated vegetable oils of known bromide content it was demonstrated that the thin-film technique could result in erroneously high bromide contents, which could also vary with the amount of oil applied, depending on the solvent used. As solutions in hexane, slightly high bromide contents were observed at high concentrations. With the cellulose pellets, bromide contents similar to known values were observed. It was concluded that the cellulose pellet procedure, although more time consuming, and less convenient for ready recovery of sample, was the most suitable for organic bromide determination. Similar results were indicated for chlorinated oils.

Download Full-text