Recent Research in Extraction, Detection and Analysis of Food Contaminants

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Analytical Methods".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 9862

Special Issue Editors

Department of Chemistry, Universidad de Las Palmas de Gran Canaria, Las Palmas, Gran Canaria, Spain
Interests: analytical chemistry; environmental chemistry; chemical engineering; steroid hormones; emerging pollutants
Special Issues, Collections and Topics in MDPI journals
Department of Chemistry, Universidad de Las Palmas de Gran Canaria, Las Palmas, Gran Canaria, Spain
Interests: analytical chemistry; emerging pollutants; UV filters; liquid chromatography; mass spectrometry; extraction techniques
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

At present, food quality is a key factor in a globalized world with a growing need for food. Nevertheless, the possibility of migration of contaminants from the different steps of food processing is higher than ever before, the social concern about this has increased exponentially in recent decades. In fact, food quality has become a marketing resource, and the industry around food analysis has also grown over the last few years. Many organic compounds, such as veterinary drugs, pesticides, plasticizers from food packaging, toxins, and other analytes, could reach the edible matrices, which represents a real problem for the public health and the economy sectors. Additionally, food samples are challenging matrices for analytical researchers due to the presence of interferences that could produce an unsuccessful analysis. For this reason, the development of analytical procedures which ensure the quality of food is essential and can be achieved via the determination of these persistent and emerging pollutants with great sensitivity and selectivity. This Special Issue invites manuscripts that develop novel extraction and/or detection techniques for the determination of organic pollutants in food matrices.

Dr. Rayco Guedes-Alonso
Dr. Sarah Montesdeoca-Esponda
Prof. Dr. José Herrera-Melián
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Foods is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Analytical methods
  • Food contaminants
  • Extraction techniques
  • Detection methods
  • Persistent organic pollutants
  • Emerging pollutants
  • Liquid chromatography
  • Gas chromatography
  • Mass spectrometry

Published Papers (4 papers)

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Research

15 pages, 1539 KiB  
Article
Tailor-Made Immunochromatographic Test for the Detection of Multiple 17α-Methylated Anabolics in Dietary Supplements
by Barbora Holubová, Pavla Kubešová, Lukáš Huml, Miroslav Vlach, Oldřich Lapčík, Michal Jurášek and Ladislav Fukal
Foods 2021, 10(4), 741; https://0-doi-org.brum.beds.ac.uk/10.3390/foods10040741 - 01 Apr 2021
Cited by 3 | Viewed by 2138
Abstract
In recent years, the undeclared presence of various anabolic androgenic steroids (AAS) in commercial supplements has been confirmed. This fact can be a potential threat to all athletes using these supplements, and therefore, there is of increased interest in the implementation of rapid [...] Read more.
In recent years, the undeclared presence of various anabolic androgenic steroids (AAS) in commercial supplements has been confirmed. This fact can be a potential threat to all athletes using these supplements, and therefore, there is of increased interest in the implementation of rapid methods for the detection of AAS. The presented study describes the development of an immunostrip test for the detection of multiple 17α-methylated AAS based on direct and indirect competitive principle using gold nanoparticles as a label. As a capture reagent on test lines conjugated stanazolol to rabbit serum albumin (RSA/ST-3) was used, the intensity of color formed in the test line of the AAS-positive sample was visually distinguishable from that of negative sample within 10 min. The optimized closed direct and indirect format of the test provided a similar visual detection limit (0.7 and 0.9 ng/mL, respectively). The most commonly orally abused AAS (17α-methyltestosterone, methandienone, methyldihydrotestosterone, oxandrolone and oxymetholone) showed a strong cross-reaction. Developed immunostrips were successfully applied to analysis of artificially contaminated dietary supplements with 17α-methylated AASs. The developed immunostrips offer potential as a useful user-friendly method for capturing suspicious dietary supplement samples with different contents of AAS at levels far below the usually used concentrations of AAS. Full article
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19 pages, 8215 KiB  
Article
Fabric Phase Sorptive Extraction of Selected Steroid Hormone Residues in Commercial Raw Milk Followed by Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry
by Rayco Guedes-Alonso, Zoraida Sosa-Ferrera, José J. Santana-Rodríguez, Abuzar Kabir and Kenneth G. Furton
Foods 2021, 10(2), 343; https://0-doi-org.brum.beds.ac.uk/10.3390/foods10020343 - 05 Feb 2021
Cited by 4 | Viewed by 2367
Abstract
Hormones in edible matrices, such as milk, are a subject of concern because of their adverse effects on the endocrine system and cell signaling and the consequent disruption of homeostasis in human consumers. Therefore, the assessment of the presence of hormones in milk [...] Read more.
Hormones in edible matrices, such as milk, are a subject of concern because of their adverse effects on the endocrine system and cell signaling and the consequent disruption of homeostasis in human consumers. Therefore, the assessment of the presence of hormones in milk as potential endocrine-disrupting compounds is warranted. However, the complexity of milk as a sample matrix and the ultra-low concentration of hormones pose significant analytical challenges. Fabric phase sorptive extraction (FPSE) has emerged as a powerful analytical technique for the extraction of emerging pollutants from complex aqueous matrices. FPSE allows for substantially simplified sample handling and short extraction and desorption times, as well as the decreased use of organic solvents. It is considered a green alternative to traditional extraction methodologies. In this work, the FPSE technique was evaluated to perform the simultaneous extraction of 15 steroid hormones from raw milk without employing any sample pretreatment steps. Clean and preconcentrated hormone solutions obtained from FPSE of raw milk were analyzed using ultra-high-performance liquid chromatography–tandem mass spectrometry to achieve low detection limits, which ranged from 0.047 to 1.242 ng·mL−1. Because of the presence of many interferents in milk, such as proteins, lipids, and sugar, the effect of fat content on the extraction procedure was also thoroughly studied. Additionally, for the first time, the effect of lactose on the extraction of steroid hormones was evaluated, and the results showed that the extraction efficiencies were enhanced in lactose-free samples. Finally, the optimized methodology was applied to commercial samples of cow and goat milk, and no measurable concentrations of the studied hormones were detected in these samples. Full article
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16 pages, 4765 KiB  
Article
Multiresidue Analysis of Organic UV Filters and UV Stabilizers in Fish of Common Consumption
by Sandra Gimeno-Monforte, Sarah Montesdeoca-Esponda, Zoraida Sosa-Ferrera, José Juan Santana-Rodríguez, Óscar Castro, Eva Pocurull and Francesc Borrull
Foods 2020, 9(12), 1827; https://0-doi-org.brum.beds.ac.uk/10.3390/foods9121827 - 09 Dec 2020
Cited by 14 | Viewed by 2312
Abstract
Fish species can bioaccumulate different pollutants present in the marine environments and incorporate them into the trophic chain. In this work, the occurrence of organic ultraviolet (UV) stabilizers and filters in different species of fishes of high consumption has been studied. A multiresidue [...] Read more.
Fish species can bioaccumulate different pollutants present in the marine environments and incorporate them into the trophic chain. In this work, the occurrence of organic ultraviolet (UV) stabilizers and filters in different species of fishes of high consumption has been studied. A multiresidue method based on microwave-assisted extraction and ultra-high performance liquid chromatography with mass spectrometry detection was developed and then it was applied to nine fish species from markets in the Canary Islands and Catalonia (Spain). Three UV filters (BP-3, OC and BM-DBM) and two stabilizers (UV-328 and UV-329) were found in some of the studied species, in concentrations ranging between 0.067 and 0.683 µg g−1 dry weight (dw). BP-3 (UV filter) was the most frequently detected compound, followed by UV-329 (UV stabilizer). Thunnus thynnus was the most heavily polluted species, with a concentration of 1.201 µg g−1 dw as the sum of all measured compounds. Full article
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14 pages, 590 KiB  
Article
Comparison of Pesticide Residue Levels in Red Wines from Canary Islands, Iberian Peninsula, and Cape Verde
by Álvaro Santana-Mayor, Ruth Rodríguez-Ramos, Bárbara Socas-Rodríguez, Carlos Díaz-Romero and Miguel Ángel Rodríguez-Delgado
Foods 2020, 9(11), 1555; https://0-doi-org.brum.beds.ac.uk/10.3390/foods9111555 - 27 Oct 2020
Cited by 9 | Viewed by 2208
Abstract
In this work, the QuEChERS method coupled to liquid chromatography-time-of flight-mass spectrometry and gas chromatography-triple quadrupole-mass spectrometry were applied for the evaluation of pesticide residues and risk assessment in red wines. The methodologies were successfully validated for 173 pesticides. Recovery values were in [...] Read more.
In this work, the QuEChERS method coupled to liquid chromatography-time-of flight-mass spectrometry and gas chromatography-triple quadrupole-mass spectrometry were applied for the evaluation of pesticide residues and risk assessment in red wines. The methodologies were successfully validated for 173 pesticides. Recovery values were in the range 75–100% for almost all pesticides and limits of quantification were between 2.60 and 21.39 µg/kg, which are in good agreement with the maximum residue limits (MRLs) established by the European Commission for pesticides in wine grapes. Finally, the analysis of 84 red wine samples from the Canary Islands, the Iberian Peninsula, and Cape Verde was carried out, which found the presence of 31 pesticide residues. However, the risk assessment disclosed that despite the large number of pesticides and the concentrations found, which in some cases exceeded the MRLs, the consumption of these wines, without considering a possible cumulative effect, does not entail a risk to the consumers. Full article
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