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Microwave-Assisted Synthesis and Extraction in Green Chemistry

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

Deadline for manuscript submissions: 31 August 2025 | Viewed by 1277

Special Issue Editors


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Guest Editor
Thermal Engineering Laboratory, Kansai University, Suita, Osaka, Japan
Interests: microwave; extraction; synthesis; microwave non-thermal effect

Special Issue Information

Dear Colleagues,

You are cordially invited to contribute to a new Special Issue entitled “Microwave-Assisted Synthesis and Extraction in Green Chemistry”.

Microwave-assisted synthesis and extraction represent significant advancements in the field of green chemistry, offering numerous advantages over conventional methods, such as faster processes, higher efficiency, greater yield, and reduced solvent consumption. Most importantly, microwave-assisted processes exhibit higher energy efficiency, which is critical in the current climate. Consequently, microwaves have been employed in chemical synthesis and extraction processes.

This Special Issue aims to highlight the application of microwave technology as a green technique for synthesis and extraction in various fields. We welcome the submission of comprehensive reviews or research manuscripts related to the design, mechanisms, and applications of microwave technology for synthesis and extraction in the food, cosmetic, or pharmaceutical industries.

We look forward to receiving your contributions.

Prof. Dr. Yusuke Asakuma
Dr. Quan V. Vuong
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

  • microwave extraction
  • synthesis
  • green chemistry
  • microwave engineering
  • microwave radiation effect
  • microwave extraction of natural products

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Published Papers (1 paper)

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Research

20 pages, 4738 KiB  
Article
Bioactive Compounds of Green Phenolic Extracts Obtained via Microwave-Assisted Extraction of Sideritis Species Grown in Greece
by Elisavet Bouloumpasi, Anna Koskeridou, Maria Irakli, Anastasia Karioti, Nektaria Tsivelika and Paschalina Chatzopoulou
Molecules 2024, 29(23), 5612; https://doi.org/10.3390/molecules29235612 - 27 Nov 2024
Viewed by 932
Abstract
The purpose of the present study was to compare the polyphenolic compounds extracted from five Sideritis species grown in Greece; S. scardica, S. clandestina, S. raeseri, S. euboea, and S. syriaca, using the Microwave-Assisted Extraction (MAE) process. To maximize [...] Read more.
The purpose of the present study was to compare the polyphenolic compounds extracted from five Sideritis species grown in Greece; S. scardica, S. clandestina, S. raeseri, S. euboea, and S. syriaca, using the Microwave-Assisted Extraction (MAE) process. To maximize the extraction yield (EY), total phenolic compounds (TPC), hypolaetin (HYP) and isoscutellarein (ISC), derivative contents (target phenolics), the response surface methodology was used for S. scardica. A Box–Behnken design was undertaken to study the effect of ethanol concentration (30–100%), extraction temperature (40–100 °C), and extraction time (5–25 min) on the responses. The optimal MAE parameters were 87.9% (v/v) ethanol, 25 min, and 100 °C. Under these conditions, there was a good agreement between experimental and predicted values, indicating the reliability of the predictions for Sideritis extracts. Phenolic compounds were then extracted under these conditions, from the five Sideritis species under investigation. The TPC, total flavonoid content (TFC), antioxidant activity based on DPPH, ABTS, and FRAP assays as well as the phenolic profile of different Sideritis extracts, evaluated via HPLC-DAD-MS, were compared. A similar phenolic profile was observed among the five Sideritis species, with HYP and ISC derivatives showing variations in their contents as a function of Sideritis species. MAE Sideritis extracts could be considered green and natural antioxidants for medicinal, cosmetic, and food purposes, accompanied by sustainable approaches. Full article
(This article belongs to the Special Issue Microwave-Assisted Synthesis and Extraction in Green Chemistry)
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