Special Issue "Analysis of Complex Samples: Liquid Gas and Supercritical Fluid Chromatography Methods"

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Materials in Analysis".

Deadline for manuscript submissions: closed (15 March 2022) | Viewed by 495

Special Issue Editor

Dr. Mariosimone Zoccali
E-Mail Website
Guest Editor
Department of Mathematical and Computer Science, Physical Sciences and Earth Sciences, University of Messina, 98166 Messina, Italy
Interests: GC-MS; SFC-MS; GC×GC-MS; LC-GC; SFE-SFC-MS
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is a pleasure to announce the next Separations Special Issue, entitled “Analysis of Complex Samples: Liquid Gas and Supercritical Fluid Chromatography Methods”, which will compile the state-of-the-art methods developed in these areas.

The current trends in analytical chemistry are focused on the development of robust, sensitive, and simple methodologies that allow the simultaneous determination of a huge number of compounds; thus, this Special Issue is focused on separations of complex samples, broadly defined.

The aim of this Special Issue is to collect both original research papers and review articles able to highlight advancements in the use of chromatography in different fields and stimulate dialogue about major obstacles that are still present.

I thank all authors for submitting their interesting contributions, the referees for their on-time reviews, and the editorial team of Separations for their professional collaboration and encouragement.

Dr. Mariosimone Zoccali
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. Separations is an international peer-reviewed open access monthly 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 2000 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

  • Gas chromatography
  • Liquid chromatography
  • Supercritical fluid chromatography
  • Volatiles
  • Semivolatiles
  • Complex samples

Published Papers (1 paper)

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Research

Article
Profiling the Volatile and Non-Volatile Compounds along with the Antioxidant Properties of Malted Barley
Separations 2022, 9(5), 119; https://doi.org/10.3390/separations9050119 - 12 May 2022
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Abstract
In this work, the stability of antioxidant compounds in malting barley seeds before and after the production of the final products is reported. In this reflection, the findings revealed that the process of fermentation had a significant impact on antioxidant activity. In vitro, [...] Read more.
In this work, the stability of antioxidant compounds in malting barley seeds before and after the production of the final products is reported. In this reflection, the findings revealed that the process of fermentation had a significant impact on antioxidant activity. In vitro, antioxidant capacities were evaluated using DPPH free radical scavenging assay. The results obtained from the spectrophotometric analysis showed that the lowest inhibition value was observed in the samples that were obtained by the classical fermentation process (ABC) and the samples of non-alcoholic beer obtained by the thermal process (NABT), with free radical inhibition capacity values of 8.50% and 5.50%, respectively. The samples of hopped wort (HW) and malted barley seeds extract (BSE) showed very high antioxidant activity with free radical inhibition capacity of 14% and 12.60%, respectively. The obtained extracts were analyzed by gas chromatography and high-performance liquid chromatography, both combined with mass spectrometry detection (GC–MS, HPLC–MS). GC–MS analysis of the SPME extraction showed the presence of 29 compounds with isopentyl alcohol in major concentration (18.19%) in the alcoholic beer; on the other hand, the HPLC–DAD–ESI/MS analysis of the ethyl acetate extract showed the presence of 13 phenolic compounds. Interestingly, the degradation of 3-Hydroxyphloretin 2′-O-glucoside in the final products of the non-alcoholic beers was found. Finally, the FTIR analysis was also employed in order to detect the type of efficient groups present in the extracts. Full article
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