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Molecules
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Advanced Analytical Methods in Food Chemistry
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Advanced Analytical Methods in Food Chemistry

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

Deadline for manuscript submissions: 30 April 2026 | Viewed by 731

Special Issue Editors

Dr. Grażyna Neunert

E-Mail Website
Guest Editor
Department of Physics and Biophysics, Poznań University of Life Sciences, 60-637 Poznań, Poland
Interests: molecular spectroscopy; langmuir monolayers; FTIR; lipids; vitamins
Special Issues, Collections and Topics in MDPI journals
Dr. Katarzyna Walkowiak

E-Mail Website
Guest Editor Assistant
Department of Physics and Biophysics, Poznań University of Life Sciences, 60-637 Poznań, Poland
Interests: food analysis; nuclear magnetic resonance (NMR); fourier transform infrared spectroscopy (FTIR)

Special Issue Information

Dear Colleagues,

This Special Issue of Molecules focuses on highlighting recent and noteworthy investigations in food chemistry research that employ advanced analytical techniques. Advanced analytical methods play a key role in modern food chemistry, enabling precise analysis of the composition, quality, and safety of food products. By using techniques such as chromatography, spectroscopy, and mass spectrometry, it is possible to detect even trace amounts of substances, including contaminants, allergens, and pesticide residues. Recently, less common and more niche methods—such as thermal and molecular techniques (e.g., DSC, TGA, XRD, or Raman spectroscopy)—have been gaining importance, particularly in the analysis of complex food components, the detection of food fraud, and the investigation of microstructure and molecular interactions. The development of these technologies not only ensures compliance with increasingly stringent regulatory standards but also supports the creation of innovative food products tailored to consumer needs.

This Special Issue will include both original research articles and reviews related to the study of food and its components using advanced analytical techniques (commonly used or more niche), particularly in the context of quality control, food safety, fraud detection, and the compositional analysis of natural products.

Dr. Grażyna Neunert
Guest Editor

Dr. Katarzyna Walkowiak
Guest Editor Assistant 

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 250 words) can be sent to the Editorial Office for assessment.

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

  • chromatography
  • mass spectrometry
  • spectroscopy techniques
  • food quality
  • food control
  • food adulteration
  • food allergens

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Published Papers (1 paper)

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Research

15 pages, 2193 KB  
Article
Rapid Analysis of Phytic Acid by Paper Spray Mass Spectrometry
by Ping Guo, Sijie Zhu and Bo Chen
Molecules 2026, 31(5), 799; https://doi.org/10.3390/molecules31050799 - 27 Feb 2026
Viewed by 430
Abstract
Phytic acid (PA), owing to its strong acidity and multidentate metal-chelating properties, readily forms multiple adduct/complex ions in mass spectrometry and is prone to pronounced matrix effects, resulting in complicated spectra and compromised sensitivity and quantitative robustness, which poses a major challenge for [...] Read more.
Phytic acid (PA), owing to its strong acidity and multidentate metal-chelating properties, readily forms multiple adduct/complex ions in mass spectrometry and is prone to pronounced matrix effects, resulting in complicated spectra and compromised sensitivity and quantitative robustness, which poses a major challenge for rapid and accurate PA quantification. Herein, we developed a rapid quantitative method for PA based on trimethylsilyldiazomethane (TMSD) methyl-ester derivatization coupled with paper spray mass spectrometry (PS–MS). PA was derivatized with TMSD to yield the methylated product (PA-Me), and the derivative solution was purified via “post-derivatization nitrogen blow-down followed by water reconstitution”, thereby markedly reducing background interference. In positive-ion mode, the stable sodium adduct ion [PA-Me+Na]+ (m/z 851.04) was used as the quantifier, enabling fast quantification with selected ion monitoring (SIM). PS–MS was performed with a 15 μL spotting volume and methanol/water (90/10, v/v, containing 0.1% formic acid) as the spray solvent, allowing rapid analysis without chromatographic separation. The method exhibited good linearity over 0.125–30 μg/mL (R2 ≥ 0.9965), with a limit of detection (LOD, S/N = 3) of 0.080 μg/mL and a limit of quantification (LOQ, S/N = 10) of 0.270 μg/mL. The intra-day and inter-day precision values were both < 10% (RSD), and recoveries ranged from 87.2% to 122.4%. This LC-free strategy features low solvent consumption and high analytical throughput, and was validated using rice bran protein and rice bran polysaccharide samples, providing technical support for rapid screening and quality control of PA in complex food/plant matrices. Full article
(This article belongs to the Special Issue Advanced Analytical Methods in Food Chemistry)
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