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Molecules
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Applications of Analytical Separations in Foods and Medicinal Products
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Applications of Analytical Separations in Foods and Medicinal Products

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

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 7412

Special Issue Editor

Prof. Dr. Joselito P. Quirino

E-Mail Website
Guest Editor
Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Hobart, Australia
Interests: separation science; green sample preparation; chromatography; electrophoresis; mass spectrometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Analytical chemistry plays an important role in ensuring the safety and quality of commercially available food and medicinal products (including pharmaceutical and herbal drugs). Analytical separation techniques such as the different modes of chromatography (liquid, gas, supercritical fluid) and capillary electrophoresis (e.g., capillary zone electrophoresis, electrokinetic chromatography, capillary electrochromatography, capillary gel electrophoresis, capillary isoelectric focusing) have therefore been popularly used for the analysis of raw materials, intermediate and finished food, and medicinal products. In addition, analytical separations combined with powerful detection techniques such as mass spectrometry that offer added selectivity and sensitivity have been especially useful to more complex samples. This Special Issue will highlight recent advancements in the use of analytical separation and detection methods for the analysis of food and medicinal products. We welcome research and review article submissions on the analysis or profiling of compounds with nutritional and flavor values in foods, bioactives including toxic compounds in herbal medicine, and impurities in pharmaceuticals. Other important topics include the determination of regulated and unregulated natural and artificial toxins in foods, screening of bioactives in chemical libraries or plants, analytical methods for preclinical, clinical, and commercial drug (small and large molecules) analysis, validation and method transfer, development of separation media/materials for chiral and chiral compounds, application of innovative methods for the compliance of products, and applications of green chemistry to analytical separations for foods and medicinal products.

Prof. Dr. Joselito P. Quirino
Guest Editor

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

  • liquid
  • gas
  • supercritical fluid chromatography
  • planar chromatography
  • capillary electrophoresis
  • detection techniques
  • food
  • pharmaceuticals
  • herbals

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Published Papers (2 papers)

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Research

14 pages, 2218 KiB  
Article
High Performance Liquid Chromatography versus Stacking-Micellar Electrokinetic Chromatography for the Determination of Potentially Toxic Alkenylbenzenes in Food Flavouring Ingredients
by Huynh N. P. Dang and Joselito P. Quirino
Molecules 2022, 27(1), 13; https://doi.org/10.3390/molecules27010013 - 21 Dec 2021
Cited by 6 | Viewed by 2933
Abstract
Alkenylbenzenes, including eugenol, methyleugenol, myristicin, safrole, and estragole, are potentially toxic phytochemicals, which are commonly found in foods. Occurrence data in foods depends on the quality of the analytical methodologies available. Here, we developed and compared modern reversed-phase high performance liquid chromatography (HPLC) [...] Read more.
Alkenylbenzenes, including eugenol, methyleugenol, myristicin, safrole, and estragole, are potentially toxic phytochemicals, which are commonly found in foods. Occurrence data in foods depends on the quality of the analytical methodologies available. Here, we developed and compared modern reversed-phase high performance liquid chromatography (HPLC) and stacking-micellar electrokinetic chromatography (MEKC) methods for the determination of the above alkenylbenzenes in food flavouring ingredients. The analytical performance of HPLC was found better than the stacking-MEKC method. Compared to other HPLC methods found in the literature, our method was faster (total run time with conditioning of 15 min) and able to separate more alkenylbenzenes. In addition, the analytical methodology combining an optimized methanol extraction and proposed HPLC was then applied to actual food flavouring ingredients. This methodology should be applicable to actual food samples, and thus will be vital to future studies in the determination of alkenylbenzenes in food. Full article
(This article belongs to the Special Issue Applications of Analytical Separations in Foods and Medicinal Products)
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14 pages, 10209 KiB  
Article
Magnetic Solid-Phase Extraction Based on Magnetic Sulfonated Reduced Graphene Oxide for HPLC–MS/MS Analysis of Illegal Basic Dyes in Foods
by Shibo Cui, Xinwu Mao, Haijing Zhang, Haowei Zeng, Zihao Lin, Xuewu Zhang and Ping Qi
Molecules 2021, 26(24), 7427; https://doi.org/10.3390/molecules26247427 - 7 Dec 2021
Cited by 11 | Viewed by 2522
Abstract
In this study, a magnetic solid-phase extraction (MSPE) method coupled with High-Performance Liquid Chromatography Mass Spectrometry (HPLC–MS/MS) for the determination of illegal basic dyes in food samples was developed and validated. This method was based on Magnetic sulfonated reduced graphene oxide (M-S-RGO), which [...] Read more.
In this study, a magnetic solid-phase extraction (MSPE) method coupled with High-Performance Liquid Chromatography Mass Spectrometry (HPLC–MS/MS) for the determination of illegal basic dyes in food samples was developed and validated. This method was based on Magnetic sulfonated reduced graphene oxide (M-S-RGO), which was sensitive and selective to analytes with structure of multiaromatic rings and negatively charged ions. Several factors affecting MSPE efficiency such as pH and adsorption time were optimized. Under the optimum conditions, the calibration curves exhibited good linearity, ranging from 5 to 60 µg/g with correlation coefficients >0.9950. The limits of detection of 16 basic dyes were in the range of 0.01–0.2 µg/L. The recoveries ranged from 70% to 110% with RSD% < 10%. The results indicate that M-S-RGO is an efficient and selective adsorbent for the extraction and cleanup of basic dyes. Due to the MSPE procedures, matrix effect and interference were eliminated in the analysis of HPLC–MS/MS without the matrix-matched standards. Thus, validation data showed that the proposed MSPE–HPLC–MS/MS method was rapid, efficient, selective, and sensitive for the determination of illegal basic dyes in foods. Full article
(This article belongs to the Special Issue Applications of Analytical Separations in Foods and Medicinal Products)
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