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Analysis and Detection Technology of Food Contaminants

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

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 1372

Special Issue Editors

School of Food and Bioengineering, Xihua University, Chengdu 610039, China
Interests: food safety; rapid detection; aptamers; nanozymes; fluorescence method

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Guest Editor
National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang 330031, China
Interests: food safety; rapid detection; nanobody; phage display

Special Issue Information

Dear Colleagues,

Food safety has become a major global public health concern because of its impacts on public health and the international food trade. Contaminants in food, such as pathogens, toxins, pesticides, veterinary drugs, heavy metals, and illegal additives, pose a serious threat to human health. Developing advanced techniques for the detection and control of these food contaminants is urgent. This Special Issue entitled “Analysis and Detection Technology of Food Contaminants” aims to provide a platform for researchers to share their developments in the analysis and detection technology of food contaminants, including, but are not limited to, the colorimetric method, fluorescence method, electrochemical method, chemiluminescence method, and other novel methods. Here, we sincerely invite authors to contribute original research articles or review articles covering the most recent analysis and detection technologies.

Dr. Lijun Wang
Dr. Qi 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

  • food safety
  • food contaminants
  • rapid detection
  • aptamers
  • antibody
  • enzymes
  • nanomaterials

Published Papers (1 paper)

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Research

15 pages, 2000 KiB  
Article
Determination and Characterization of Gold Nanoparticles in Liquor Using Asymmetric Flow Field-Flow Fractionation Hyphenated with Inductively Coupled Plasma Mass Spectrometry
by Bin Li, Sew Lay Chua, Dingyi Yu, Sheot Harn Chan and Angela Li
Molecules 2024, 29(1), 248; https://doi.org/10.3390/molecules29010248 - 3 Jan 2024
Cited by 1 | Viewed by 888
Abstract
The EU has approved the usage of gold as a food additive (E175) and it has been applied in numerous foods for coloring and decoration purposes. Different from the general assumption that edible gold is mainly present in the form of flakes or [...] Read more.
The EU has approved the usage of gold as a food additive (E175) and it has been applied in numerous foods for coloring and decoration purposes. Different from the general assumption that edible gold is mainly present in the form of flakes or external coating in foods, this work demonstrated that gold nanoparticles (Au NPs) can be released from gold flakes and extracted under optimized conditions. To support future risk assessment associated with the exposure of Au NPs to human health, an effective approach was established in this study for both size characterization and mass determination of Au NPs released in a commercial gold-containing liquor using Asymmetric Flow Field-flow Fractionation (AF4) hyphenated with Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Our results showed that no Au NPs were detected in the original liquor product and only after ultrasonication for several minutes did Au NPs occur in the ultrasound-treated liquor. Particularly, Au NPs released in the liquor can be well extracted after 100-fold enrichment of gold flakes and the subsequent ultrasonication for 25 min. Size characterization of Au NPs was conducted by AF4-ICP-MS under calibration with Au NP standards. The gold particle sizes detected ranged from 8.3–398.0 nm and the dominant size of the released Au NPs was around 123.7 nm in the processed liquor. The mass concentration of gold particles determined in the liquor sample with gold flakes concentrated and subsequently sonicated was 48.1 μg L−1 by pre-channel calibration and the overall detection recoveries ranged over 82–95%. For the comparison control samples without ultrasonication, there was no detection of Au NPs. The established method was demonstrated to be useful for monitoring Au NPs in liquor and is possibly applied to other similar foodstuffs. Full article
(This article belongs to the Special Issue Analysis and Detection Technology of Food Contaminants)
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