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Harnessing Algae for Sustainable Development: Progress in Biochemistry, Biotechnology, and Ecology

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Bioeconomy of Sustainability".

Deadline for manuscript submissions: closed (4 November 2023) | Viewed by 4074

Special Issue Editors


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Guest Editor
Department of Botany, Ahmadu Bello University, Zaria 810001, Nigeria
Interests: molecular ecology of algae and cyanobacteria

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Guest Editor
Department of Cellular Biology, Institute of Biological Sciences, University of Brasília (UnB), Brasília 70910900, DF, Brazil
Interests: molecular ecology of cyanobacteria and bioprospection

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Guest Editor
Department of Botany, Ahmadu Bello University, Zaria 810001, Nigeria
Interests: algal toxicity; photosynthesis; bioprospection

Special Issue Information

Dear Colleagues,

  • The broad collection of organisms known as algae is vital to many ecosystems and has potential uses in several industries, including biotechnology, bioenergy, and medicine. Numerous recent developments in biochemistry, biotechnology, and ecology can be attributed to the study of algae. This Special Issue will highlight current developments and offer information on new uses for these critical organisms. Algae are a promising source of bioactive compounds and have gained significant attention in the biotechnology industry due to their diverse metabolic capabilities and fast growth rates. Metabolic engineering and methods for growing, gathering, and processing algae have been developed due to advancements in algal biotechnology, including photobioreactors and raceway ponds. Algal bioprocessing and downstream processing are essential for commercializing algal products, and algal bioremediation is a potential method for eliminating contaminants from water and the atmosphere. Algae are crucial to global biogeochemical cycles and play a significant role in aquatic environments. The current developments in the ecology of algae—including high-throughput sequencing methods, interactions with other organisms, and the ecophysiology of algae—are highlighted in this Special Issue of Sustainability. This section will concentrate on comprehending algal bloom dynamics and creating prediction models to foresee bloom episodes because algal blooms can have substantial ecological and economic effects.

We anticipate that this Special Issue will stimulate the submission of papers on the numerous potential uses of algae in ecological management and sustainable biotechnology.

Subthemes:

  • Biochemistry of algae:
    • Algal pigments and their applications;
    • Algal carbohydrates as feedstock;
    • Algal lipids and their applications;
    • Algal proteins and their applications.
  • Biotechnology of algae:
    • Algal bioreactor design and optimization of cultivation conditions;
    • Algal bioremediation;
    • Algal bioprocessing and downstream processing.
  • Ecology of algae;
  • Algal diversity and distribution;
  • Algal interactions with other organisms in aquatic ecosystems;
  • Algal ecophysiology and response to environmental stressors;
  • Algal bloom dynamics and predictions.

We look forward to receiving your contributions.

Dr. Mathias Chia
Dr. Adriana Sturion Lorenzi
Dr. Suleiman Dauda
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. Sustainability 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 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

  • biochemistry of algae
  • biotechnology of algae
  • ecology of algae

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Published Papers (2 papers)

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Research

20 pages, 3233 KiB  
Article
The Use of Chlorella species to Remove Nutrients from Dairy Wastewater to Produce Livestock Feed
by Siane C. Luzzi, Robert G. Gardner and Bradley J. Heins
Sustainability 2024, 16(4), 1382; https://doi.org/10.3390/su16041382 - 6 Feb 2024
Viewed by 1243
Abstract
The goal of the study was to utilize Chlorella sp. to recycle nutrients from a dairy wastewater lagoon producing microalgae biomass for dairy cattle. Chlorella sp. was cultured in mixotrophic conditions with various ratios of raw dairy wastewater with a lab-scale (1.25 L) [...] Read more.
The goal of the study was to utilize Chlorella sp. to recycle nutrients from a dairy wastewater lagoon producing microalgae biomass for dairy cattle. Chlorella sp. was cultured in mixotrophic conditions with various ratios of raw dairy wastewater with a lab-scale (1.25 L) environment and a pilot-scale (70 L) environment. The influence of extra CO2, pH, temperature, solar radiation, and photosynthetic active radiation were tested for cell growth, biomass productivity and nutrient (ammonium, nitrate, and phosphate) removal from wastewater. The objective of this study was to determine the alternative ratios (control, 1:10, 1:20, 1:30, or 1:40) of dairy wastewater, where Chlorella sp. biomass could be produced to remove nutrients. Additionally, the study evaluated the addition of CO2 into the cultivation system to increase biomass yield. During the first experiment, the lab-scale and pilot-scale experiments showed similar biomass growth after seven days of growth. The control had the highest biomass, followed by 1:10. For the pilot-scale experiment, the treatments (control, controlN, 1:10, 1:10 N, 1:30, and 1:30 N) were different from each other for nutrient removal rates and biomass production. The bioreactors designed for this study may be used on farms to recycle dairy wastewater and produce enriched biomass for use to feed livestock. Full article
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16 pages, 2484 KiB  
Article
From the Sea to Mosquito Control: The Potential of Halymenia dilatata Marine Alga as an Eco-Friendly Mosquitocidal Agent
by Nadia Rebhi Hussni Hasan, Parthiban Yogarajalakshmi, Prabhakaran Vasantha-Srinivasan, Wael F. Shehata, Narayanaswamy Radhakrishnan, Santhoshkumar Jayakodi, Sengodan Karthi, Sengottayan Senthil-Nathan, Hossam Eldin Hamed Mansour, Hesham S. Ghazzawy, Meimona Abdelrhim Bushara and Ahmed Hassan Abdou
Sustainability 2023, 15(15), 11900; https://doi.org/10.3390/su151511900 - 2 Aug 2023
Cited by 7 | Viewed by 1978
Abstract
A marine-derived red alga, along with their active constituents, were actively screened for their biocontrol potential against major insect pests. The current study explored the larvicidal activity of crude methanolic extracts of the red alga Halymenia dilatata (Mx-Hd) against Aedes aegypti (Linn.), and [...] Read more.
A marine-derived red alga, along with their active constituents, were actively screened for their biocontrol potential against major insect pests. The current study explored the larvicidal activity of crude methanolic extracts of the red alga Halymenia dilatata (Mx-Hd) against Aedes aegypti (Linn.), and their enzyme inhibition, repellent activity, and non-target toxicity was screened against non-target species. The toxicity of Mx-Hd to exposed larvae was dose-dependent, and it was significant at the maximum concentration of 100 ppm (parts per million) across the second, third, and fourth instars of Ae. aegypti. The LC50 and LC90 Mx-Hd concentrations for second-instar larvae were 37 and 93 ppm, respectively. Moreover, the level of major detoxifying enzymes was altered in response to the Mx-Hd treatment. The repellent activity of Mx-Hd showed maximum repellent protection at 100 ppm dosage for up to 210 min. The toxicity against non-target species showed that Mx-Hd was safe or less toxic at the prominent dosage (1000 ppm). The photomicrography results provided a prominent damage rate in fourth-instar midgut cells and tissues treated with Mx-Hd. Overall, the present study delivered an insect toxicological screening study of bioactive red alga extracts against a dengue mosquito vector, as well as a baseline for better commercialization of bioactive insecticides. Also, the bioeconomy of algal-based pesticides in managing mosquito larvae presents an exciting avenue for sustainable and eco-friendly pest control. Full article
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