New Advances in Microalgae Biotechnology—Increasing Productivity Towards Achieving a More Profitable Production Chain

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Microbial Biotechnology".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 405

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Laboratory of Phycology, Department of Botany, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Interests: algal biotechnology; algal physiology; aquaculture; phycology
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Special Issue Information

Dear Colleagues,

In the search for innovative and sustainable solutions to tackle contemporary societal challenges, the potential of microalgae (including cyanobacteria) has been explored in several fields. These microorganisms are a rich source of bioactive compounds such as proteins, lipids, carbohydrates, phenols, and vitamins. The microalgae and cyanobacteria's universe is diverse and promising regarding a more sustainable world. Since the release of the Agenda 2030 targets, new researchers have shown a recent and growing interest in innovative processes and products involving microalgae, as they are considered crucial for achieving a number of the 17 Sustainable Development Goals proposed by the United Nations General Assembly.

In view of this, this Special Issue aims to disseminate high-impact research and review articles on the latest advancements in microalgae biotechnology. The main focal points include, but are not limited to, the following:

  • Challenges in large-scale cultivation;
  • Production, characterization, and purification of poorly studied metabolites;
  • Opportunities of microalgae as future food;
  • Alternative pathways for algal biofuel production.

Dr. Carlos Yure B. Oliveira
Guest Editor

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Keywords

  • biomass
  • food
  • nutraceuticals
  • biorefinery
  • bioeconomy

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Published Papers (1 paper)

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Research

12 pages, 1894 KiB  
Article
New Findings on the Survival of Durusdinium glynnii Under Different Acclimation Methods to Low Salinities
by Barbara de Cassia S. Brandão, Jéssika L. de Abreu, Deyvid Willame S. Oliveira, Clarissa Vilela F. da Silva Campos, Ingrid M. Thó de Aguiar, Pedro R. de Sena, Alfredo O. Gálvez and Carlos Yure B. Oliveira
Microorganisms 2025, 13(4), 946; https://doi.org/10.3390/microorganisms13040946 - 20 Apr 2025
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Abstract
This study investigated the effects of salinity on the growth and cell morphotype of the coral-associated dinoflagellate Durusdinium glynnii under two acclimation strategies: abrupt saline shock (S5) and gradual reduction (S2). Results revealed optimal growth rates (µ = 0.22–0.35 day−1) at [...] Read more.
This study investigated the effects of salinity on the growth and cell morphotype of the coral-associated dinoflagellate Durusdinium glynnii under two acclimation strategies: abrupt saline shock (S5) and gradual reduction (S2). Results revealed optimal growth rates (µ = 0.22–0.35 day−1) at salinities of 20–30 g L−1, while extreme conditions (10 and 40 g L−1) significantly inhibited development. The S2 strategy enabled adaptation to salinities as low as 16 g L−1, maintaining higher cell densities compared to the S5 method. Gradual salinity reduction also influenced cellular morphology: below 12 g L−1, a predominant shift occurred from motile forms (mastigotes) to non-motile spherical structures (coccoid), suggesting an adaptive response to osmotic stress, gradually reducing the growth rate due to the lower reproductive rate of coccoid cells, as previously reported in studies. The findings conclude that D. glynnii is a euryhaline species, tolerant of moderate salinity variations (16–30 g L−1) but limited under extreme conditions. Its morphological plasticity and gradual acclimation capacity highlight its potential for cultivation in brackish environments and biomass production for biotechnological applications, such as antioxidants and antimicrobials. The data provide a foundation for future studies on molecular mechanisms of salinity tolerance, essential for coral conservation strategies and bioprospecting efforts. Full article
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