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Processes
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Advanced Technologies for the Production, Processing, and Extraction of Biorefinery...
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Advanced Technologies for the Production, Processing, and Extraction of Biorefinery Products from Microalgae

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Biological Processes and Systems".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 2915

Special Issue Editors

Dr. Motasem Alazaiza

E-Mail Website
Guest Editor
Department of Civil and Environmental Engineering, College of Engineering (COE), AꞌSharqiyah University (ASU), Ibra 400, Oman
Interests: water and wastewater treatment; emerging contaminants; waste management technology; groundwater pollution
Dr. Salem S. Abu Amr

E-Mail Website
Guest Editor
Department of Health, Safety and Environmental Management, International College of Engineering and Management, Muscat, Oman
Interests: pollution control; environmental engineering; wastewater treatment; water quality; waste management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increasing global demand for sustainable and renewable resources has catalyzed significant advancements in the field of biorefineries, with microalgae emerging as a potent source of bio-based products. Microalgae, known for their rapid growth rates and high biochemical productivity, offer a versatile platform for producing biofuels, pharmaceuticals, nutraceuticals, and other valuable biochemicals. This exploration encompasses the latest technological breakthroughs in cultivation, harvesting, and bioprocessing techniques, highlighting their roles in enhancing yield, efficiency, and economic viability. From advanced photobioreactors and genetic engineering to novel extraction methods and bioconversion processes, this Special Issue on "Advanced Technologies for the Production, Processing, and Extraction of Biorefinery Products from Microalgae" provides a comprehensive understanding of the state-of-the-art strategies employed to harness the full potential of microalgae in biorefineries. As we navigate the complexities of scaling these technologies for industrial applications, this Special Issue underscores the pivotal role of microalgae in the transition towards a sustainable bioeconomy.

Topics include, but are not limited to, the following:

  • Innovative Cultivation Techniques for Microalgae;
  • Advanced microalgae harvesting and Dewatering Methods;
  • Extraction of Biorefinery Products from Microalgae;
    Optimization of Microalgae Growth Conditions and Nutrient Supply;
  • Regulatory and Market Challenges in Algal Biorefinery Products;
  • Applications of Machine Learning and AI in Algal Biotechnology.

Dr. Motasem Alazaiza
Dr. Salem S. Abu Amr
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. Processes 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 2400 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

  • microalgae biorefinery
  • biofuel production and extraction microalgae
  • cultivation techniques
  • algae-based biofuels
  • renewable energy from algae

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Published Papers (2 papers)

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Research

19 pages, 2329 KiB  
Article
Innovative Microalgae-Based Edible Coatings with Encapsulated Bioactives: Enhancing Fresh Raspberry Shelf Life and Quality
by Alexandra Mari, Erofili Manta and Magdalini Krokida
Processes 2025, 13(4), 1193; https://doi.org/10.3390/pr13041193 - 15 Apr 2025
Viewed by 197
Abstract
Raspberries are increasingly popular due to their high nutritional value. However, oxidative reactions, respiration, spoilage bacteria, and improper storage conditions throughout the supply chain can lead to rapid quality degradation and a short shelf life. Extending the shelf life of raspberries with minimal [...] Read more.
Raspberries are increasingly popular due to their high nutritional value. However, oxidative reactions, respiration, spoilage bacteria, and improper storage conditions throughout the supply chain can lead to rapid quality degradation and a short shelf life. Extending the shelf life of raspberries with minimal processing, so as not to compromise their nutritional content, physical characteristics, or sensory attributes, remains a significant challenge in the food industry. Edible coatings offer a promising solution for extending the commercial shelf life of raspberries, while enriching these coatings with encapsulated bioactive compounds can further enhance their nutritional value. The objective of this study was to develop Chlorella vulgaris protein-based edible coatings, enriched with encapsulated bioactive compounds from rosemary (via electrospinning), to extend the shelf life of fresh raspberries. The berries were immersed in the coating solutions and air-dried until the coatings were fully set. The shelf life of the coated raspberries was then evaluated, with samples stored at 4 °C. Key quality attributes, including color, weight loss, antioxidant activity, and spoilage microorganism levels, were monitored at predetermined time intervals. The results demonstrated that the application of Chlorella vulgaris protein-based coatings enriched with bioactive compounds significantly extended the shelf life of raspberries and improved their overall quality. Full article
(This article belongs to the Special Issue Advanced Technologies for the Production, Processing, and Extraction of Biorefinery Products from Microalgae)
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11 pages, 752 KiB  
Article
Extraction and Characterization of Biological Phytoconstituents of Commiphora gileadensis Leaves Using Soxhlet Method
by Aiman A. Bin Mokaizh, Abdurahman Hamid Nour, Motasem Y. D. Alazaiza, Sara Elkheir Mustafa, Manal Suliman Omer and Dia Eddin Nassani
Processes 2024, 12(8), 1567; https://doi.org/10.3390/pr12081567 - 26 Jul 2024
Cited by 2 | Viewed by 2354
Abstract
Commiphora gileadensis is a medicinal plant with a wide range of biological characteristics. Many medical diseases can be treated using the leaves of C. gileadensis, including bacterial infections, inflammatory illnesses, and wounds. As a result, the Soxhlet extraction method was used to [...] Read more.
Commiphora gileadensis is a medicinal plant with a wide range of biological characteristics. Many medical diseases can be treated using the leaves of C. gileadensis, including bacterial infections, inflammatory illnesses, and wounds. As a result, the Soxhlet extraction method was used to extract the phenolic components and measure the recovery yields from C. gileadensis leaf. The impacts of the Soxhlet extraction parameters (extraction time 30–150 min, sample/solvent ratio 1:20–1:40 g/mL, and concentration of ethanol solvent 20–100% v/v) on the total flavonoid content (TFC), total phenolic content (TPC), and extraction yield were investigated using the one-factor-at-a-time (OFAT) technique. Fourier transform infrared spectroscopy (FTIR) and gas chromatography–mass spectroscopy (GC–MS) analyses have been employed to evaluate the extracts for the presence of various phytochemicals. According to the results, the C. gileadensis leafs ethanolic extract extracted via the Soxhlet process achieved the maximum yields at 90 min of extraction time, a feed/solvent ratio of 1:30 g/mL, and a 40% v/v ethanol concentration. These yields were: extraction yield = 23.20 ± 0.10% w/w, TPC = 59.93 ± 1.33 mg GAE/g d.w., and TFC = 19.65 ± 1.77 mg QE/g d.w.. Further, a total of 20 phenolic components with excellent antioxidant characteristics were found in the leaf extract of C. gileadensis extracted via the Soxhlet method. Full article
(This article belongs to the Special Issue Advanced Technologies for the Production, Processing, and Extraction of Biorefinery Products from Microalgae)
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