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ChemEngineering
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Advances in Sustainable and Green Chemistry
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Advances in Sustainable and Green Chemistry

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: 20 August 2026 | Viewed by 2827

Special Issue Editors

Prof. Dr. Maja Dent

E-Mail Website
Guest Editor
Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia
Interests: food chemistry; bioactive compounds; innovative extraction technology
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Antonela Ninčević Grassino

E-Mail Website
Guest Editor
Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
Interests: analytical chemistry; food chemistry; food packaging; waste and by-product valorisation; innovative extraction technology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In this Special Issue, we aim to collect new developments and trends in sustainable and green chemistry, including innovative extraction methods and applications of extracts and biopolymers isolated from various food waste and by-products of industrial processing. Waste avoidance and the use of techniques to recover various functional ingredients are therefore favoured over recycling and disposal. Topics of interest include sustainable and environmentally friendly extraction processes such as ultrasound, microwaves, high hydrostatic pressure, enzymes, and hydrodistillation. In addition to the use of various environmentally friendly extraction processes, this Special Issue presents the application of extracts and extracted biopolymers in various functional forms, e.g. as additives for edible packaging films, as well as their physicochemical testing.

Overall, this Special Issue aims at expanding knowledge on the application of innovative extraction processes in the recovery of bioactive compounds from plant food waste or by-products and the incorporation of extracts and biopolymers, with a focus on ecological compatibility and sustainability as well as their new applications.

These characteristics make green extraction processes attractive in the context of the circular economy and green chemistry principles, with a focus on the principles of recovery and waste minimisation.

Therefore, with this Special Issue, you are invited to advance this amazing field of chemical engineering.

Prof. Dr. Maja Dent
Prof. Dr. Antonela Ninčević Grassino
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 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. ChemEngineering 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 1800 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

  • innovative extraction techniques
  • bioactive compounds
  • plant food waste
  • green chemistry
  • ultrasound-assisted extraction
  • microwave-assisted extraction
  • high hydrostatic pressure
  • enzyme-assisted extraction
  • edible film

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

27 pages, 7025 KB  
Article
Flower-like Stearic Acid/Rosehip Oil Self-Assembled Layers for Copper Corrosion Protection
by Regina Fuchs-Godec
ChemEngineering 2026, 10(4), 53; https://doi.org/10.3390/chemengineering10040053 (registering DOI) - 21 Apr 2026
Viewed by 182
Abstract
The corrosion protection of copper in acidic urban rain environments was studied using self-assembled hydrophobic layers (SAHLs) based on stearic acid (SA), with and without rosehip seed oil (RH). The limited durability of fatty acid-based self-assembled layers under acidic conditions was addressed by [...] Read more.
The corrosion protection of copper in acidic urban rain environments was studied using self-assembled hydrophobic layers (SAHLs) based on stearic acid (SA), with and without rosehip seed oil (RH). The limited durability of fatty acid-based self-assembled layers under acidic conditions was addressed by correlating surface wettability, morphology, and electrochemical behaviour. Contact angle and SEM analyses showed that SA alone forms a moderately hydrophobic but structurally irregular layer, whereas the addition of 2.0 wt.% RH produces a hierarchical micro/nanostructure with near-superhydrophobic characteristics (CA ≈ 149°). Electrochemical measurements in simulated acid rain solutions (pH 5, 3, and 1) revealed a strong pH dependence of protective performance. While SA-derived layers provided effective protection at pH 5, they deteriorated at lower pH due to protonation of carboxylate anchoring groups and electrolyte ingress. In contrast, SAHLs containing 2.0 wt.% RH maintained polarisation resistance in the MΩ cm2 range and inhibition efficiencies above 99% at pH 3, and remained effective even at pH 1. Long-term EIS results indicate a predominantly diffusion-controlled, barrier-type inhibition mechanism associated with defects sealing and interfacial reorganisation. Notably, the rosehip seed oil used is a commercially available, bio-based material with expired shelf life, highlighting the potential of waste-derived resources for sustainable corrosion protection. Full article
(This article belongs to the Special Issue Advances in Sustainable and Green Chemistry)
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22 pages, 7747 KB  
Article
Crack the Shell by Unlocking the Polyphenol Power of Hazelnut Waste with Ultrasound
by Jana Šic Žlabur, Margareta Đumbir, Anamarija Peter, Jona Šurić, Sandra Voća, Martina Skendrović Babojelić, Filip Varga and Mia Dujmović
ChemEngineering 2026, 10(2), 27; https://doi.org/10.3390/chemengineering10020027 - 6 Feb 2026
Viewed by 946
Abstract
Hazelnut (Corylus avellana L.) shells, typically discarded as agro-industrial by-products, represent a potentially valuable source of bioactive polyphenolic compounds with significant antioxidant properties. This study aimed to evaluate and compare the polyphenol composition and antioxidant capacity of the kernels and shells of [...] Read more.
Hazelnut (Corylus avellana L.) shells, typically discarded as agro-industrial by-products, represent a potentially valuable source of bioactive polyphenolic compounds with significant antioxidant properties. This study aimed to evaluate and compare the polyphenol composition and antioxidant capacity of the kernels and shells of two hazelnut varieties, ‘Rimski’ and ‘Istarski duguljasti’. High-intensity ultrasound-assisted extraction (UAE) was applied to enhance the recovery of bioactive compounds under optimized conditions (80% ethanol, high amplitude, and 25 min treatment). The extracts were analyzed for total polyphenols, total flavonoids, total non-flavonoids, and individual phenolic compounds. Hazelnut shells exhibited significantly higher levels of total polyphenols, flavonoids, and antioxidant capacity compared to kernels. The dominant individual polyphenolic compounds identified in the shell were kaempferol, gallic acid, naringin, rutin trihydrate, quercetin-3-glucoside, chlorogenic acid, quercetin, ferulic acid, rosmarinic acid, and vanillic acid. Application of UAE notably improved extraction efficiency and overall yield compared to conventional extraction methods. The findings underscore hazelnut shells as a nutritionally and functionally valuable by-product and confirm UAE as a green, efficient extraction technique. These results provide a strong basis for developing high-value-added products for the cosmetic, pharmaceutical, and food industries, thereby supporting circular bioeconomy and sustainable chemistry principles. Full article
(This article belongs to the Special Issue Advances in Sustainable and Green Chemistry)
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10 pages, 509 KB  
Article
Simultaneous Determination of Four Fatty Acids in Coix Seeds via Gas Chromatography
by Qiang Ai, Hui Wang, Chenghong Xiao, Changgui Yang, Shanmin Song, Mingxiang Zhang, Jiandong Tang and Yang Lei
ChemEngineering 2025, 9(5), 98; https://doi.org/10.3390/chemengineering9050098 - 11 Sep 2025
Viewed by 1048
Abstract
The aim of this study was to establish a method named simultaneous determination for the content of four fatty acids in Coix seeds and provide a reference for the quality control of this type of medicinal ingredient. The contents of four fatty acids [...] Read more.
The aim of this study was to establish a method named simultaneous determination for the content of four fatty acids in Coix seeds and provide a reference for the quality control of this type of medicinal ingredient. The contents of four fatty acids in Coix seeds were determined via gas chromatography, and the method was subsequently validated. The linear ranges of palmitic acid, stearic acid, oleic acid and linoleic acid were 282.50–2825.00, 262.00–1572.00, 425.20–2976.75 and 304.50–1218.00 µg/mL, respectively. The RSD values of precision, repeatability and stability were less than 3.00% (n = 6), with recoveries of 98.82–102.05% (RSD 2.22–4.60%, n = 6). The contents of palmitic acid, stearic acid, oleic acid and linoleic acid in the 24 batches of Coix seeds were 0.11–0.32%, 0.06–0.08%, 0.35–1.17% and 0.31–0.73%, respectively. Oleic acid had the highest content, followed by linoleic acid, palmitic acid, and stearic acid. The detection method established in this experiment was implemented rapidly and accurately, was reproducible, and could simultaneously determine the contents of four fatty acids in Coix seeds. This study provides a reference for evaluating the quality of Coix seeds obtained from different habitats. Full article
(This article belongs to the Special Issue Advances in Sustainable and Green Chemistry)
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