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Molecules
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Detection and Analysis of Chemical Pollutants in Food
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Detection and Analysis of Chemical Pollutants in Food

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: closed (15 December 2023) | Viewed by 2317

Special Issue Editors

Dr. Zhiyong Zhao

E-Mail Website
Guest Editor
Shanghai Academy of Agricultural Sciences, Shanghai, China
Interests: food contaminants; method development; food toxicology; exposure assessment
Dr. Ailiang Chen

E-Mail Website
Guest Editor
Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
Interests: food quality and safety; biosensor; immunoassay; nucleotide aptamer; colorimetric analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Food may be contaminated by various chemical pollutions at several stages before consumption: during the crop or forage stage or during animal production and harvesting; or at the post-harvest stage, during storage, transport and processing. As is well known, the primary concern regarding food contaminants refers to pesticides and veterinary drugs, biological toxins, heavy metals and some food-processed pollutions (acrylamide, chloropropanols and glycidyl ester). Their illegal presence in food poses a potential health risk to humans and animals. To ensure a safe food supply, analytical determination technology should be developed to aid food processors and regulatory agencies in the monitoring of food safety.

This Special Issue aims to present a collection of advanced technology, including chromatography/mass spectrography, immunoassay, and sensor array for chemical pollutants detection. We welcome researchers to share their valuable work on the detection of these food contaminants, in order to open unexplored areas. 

Dr. Zhiyong Zhao
Dr. Ailiang Chen
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. Molecules 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 2700 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

  • detection
  • chemical pollutants
  • food
  • instrumental analysis
  • immunoassay
  • sensor assay

Published Papers (2 papers)

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Research

12 pages, 779 KiB  
Article
Safe Application of 75% Trifloxystrobin–Tebuconazole as Water-Dispersible Granules in Paddy Based on Residue and Dietary Risk Assessment
by Siwei Wang, Yanping Liu and Manshan Zhu
Molecules 2024, 29(1), 163; https://doi.org/10.3390/molecules29010163 - 27 Dec 2023
Viewed by 686
Abstract
The present study describes the development of a highly effective approach for determining the residue distribution and dissipation of trifloxystrobin and tebuconazole, and their risk assessment in brown rice, husk, straw, and grain using high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS). The current study [...] Read more.
The present study describes the development of a highly effective approach for determining the residue distribution and dissipation of trifloxystrobin and tebuconazole, and their risk assessment in brown rice, husk, straw, and grain using high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS). The current study provides considerable novel information regarding the safe utilization of a mixture of trifloxystrobin and tebuconazole in paddy production. The samples demonstrated a range of mean recoveries between 72% and 86%, with a 1.1–9.2% relative standard deviation (RSD). The limits of quantification (LOQ) and half-lives (t1/2) for brown rice, husk, straw, and grain were, respectively, established to be 0.001–0.01 mg/kg and 4.1–7.7 days. The concentrations of terminal residues in the brown rice, husk, straw, and grain were, respectively, found to be 0.02–0.05, 0.03–0.11, 0.02–0.07, and 0.02–0.05 mg/kg after being treated twice at 168.75 g a.i./ha with 21 and 28 days of pre-harvest intervals (PHIs). Trifloxystrobin and tebuconazole presented a non-negligible chronic risk to human subjects, as evidenced by a risk quotient (RQ) value of less than 1. Full article
(This article belongs to the Special Issue Detection and Analysis of Chemical Pollutants in Food)
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15 pages, 2191 KiB  
Article
Pyrrolizidine Alkaloids in Food on the Italian Market
by Mariantonietta Peloso, Gaetan Minkoumba Sonfack, Sandra Paduano, Michele De Martino, Barbara De Santis and Elisabetta Caprai
Molecules 2023, 28(14), 5346; https://doi.org/10.3390/molecules28145346 - 11 Jul 2023
Cited by 1 | Viewed by 1279
Abstract
Pyrrolizidine alkaloids (PAs) are secondary metabolites produced by over 6000 plant species worldwide. PAs enter the food chain through accidental co-harvesting of PA-containing weeds and through soil transfer from the living plant to surrounding acceptor plants. In animal studies, 1,2-unsaturated PAs have proven [...] Read more.
Pyrrolizidine alkaloids (PAs) are secondary metabolites produced by over 6000 plant species worldwide. PAs enter the food chain through accidental co-harvesting of PA-containing weeds and through soil transfer from the living plant to surrounding acceptor plants. In animal studies, 1,2-unsaturated PAs have proven to be genotoxic carcinogens. According to the scientific opinion expressed by the 2017 EFSA, the foods with the highest levels of PA contamination were honey, tea, herbal infusions, and food supplements. Following the EFSA’s recommendations, data on the presence of PAs in relevant food were monitored and collected. On 1 July 2022, the Commission Regulation (EU) 2020/2040 came into force, repealed by Commission Regulation (EU) 2023/915, setting maximum levels for the sum of pyrrolizidine alkaloids in certain food. A total of 602 food samples were collected from the Italian market between 2019 and 2022 and were classified as honey, pollen, dried tea, dried herbal infusions, dried herbs, and fresh borage leaves. The food samples were analyzed for their PA content via an in-house LC-MS/MS method that can detect PAs according to Regulation 2023/915. Overall, 42% of the analyzed samples were PA-contaminated, 14% exceeded the EU limits, and the items most frequently contaminated included dried herbs and tea. In conclusion, the number of food items containing considerable amounts of PAs may cause concern because they may contribute to human exposure, especially considering vulnerable populations—most importantly, children and pregnant women. Full article
(This article belongs to the Special Issue Detection and Analysis of Chemical Pollutants in Food)
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