Science AI Journal
Energy · Research topic

Open research questions in Algal biology and biofuel production

82 unresolved questions extracted from the limitations and future-work sections of 437 Algal biology and biofuel production papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The paper identifies O2 contamination as a key limitation of the system. It also highlights the challenge of maintaining a stable pH and alkalinity level in the system. The paper notes the need for further research to improve the system's performance and meet European biomethane grid injection standards.

    Sequential Evaluation of Liquid-to-Gas Ratio, Photoperiod, and Light Intensity for Chlorella vulgaris-Based Biogas Upgrading in a PBR–Absorption Column System · 2026 · DOI

  • O2 contamination, which was 1.5–2.5%, remains a key limitation, - Limited alkalinity, - The system was operated in semi-continuous mode

    Sequential Evaluation of Liquid-to-Gas Ratio, Photoperiod, and Light Intensity for Chlorella vulgaris-Based Biogas Upgrading in a PBR–Absorption Column System · 2026 · DOI

  • The lack of a system for co-culturing the aerial microalga Coelastrella rubescens KGU-HN001 and the nitrogen fixing-bacterium Rhodobacter sphaeroides under aerial-phase conditions. The need for a controlled environment to study the growth and nutrient uptake of the microorganisms. The difficulty in achieving stable algal production in natural environments.

    Co-culture of the aerial microalga Coelastrella rubescens KGU-HN001 and the nitrogen fixing-bacterium Rhodobacter sphaeroides under aerial-phase conditions · 2026 · DOI

  • Combining multi-omics, metabolic engineering, adaptive cultivation, process optimization, and predictive modeling to identify robust strains and cultivation strategies - Evaluating extremophilic microalgal systems using integrated techno-economic and life-cycle approaches

    Extremophilic Microalgae and Cyanobacteria as Platforms for Climate Resilience, Circular Resource Utilization and Bioprospecting · 2026 · DOI

  • The lack of integrated techno-economic and life-cycle approaches to assess the environmental and commercial benefits of extremophilic microalgal systems. The need for further research on the scale-up of extremophilic microalgal cultivation and the associated challenges of energy demand, process control, and resource inputs.

    Extremophilic Microalgae and Cyanobacteria as Platforms for Climate Resilience, Circular Resource Utilization and Bioprospecting · 2026 · DOI

  • Large-scale application of microalgae-based fertilizers and biostimulants remains limited by biomass production costs. Inconsistent performance under field conditions is a major challenge. Regulatory uncertainty is another significant gap.

    Microalgae and cyanobacteria as a tool for agricultural sustainability: a review of biofertilizer and biostimulant potential · 2026 · DOI

  • The gap lies in the need for renewable, biodegradable alternatives to hazardous synthetic chemicals. Critical bottlenecks such as washing fastness, thermal stability of pigments, and processing scalability must be addressed. The paper identifies key knowledge gaps in the use of Spirulina in the textile sector.

    Green fibers, blue microalgae: a scoping review of spirulina in the textile industry · 2026 · DOI

  • addressing critical bottlenecks, - facilitating the industrial integration of microalgal biotechnology into sustainable textile manufacturing

    Green fibers, blue microalgae: a scoping review of spirulina in the textile industry · 2026 · DOI

  • Future research should focus on low-cost cultivation and harvesting technologies, field scale validation, and standardized product formulations to accelerate the transition toward climate smart and resource sustainable agriculture.

    Microalgae and cyanobacteria as a tool for agricultural sustainability: a review of biofertilizer and biostimulant potential · 2026 · DOI

  • Future research should explore molecular pathways and species-specific strategies in other diatom species, especially polar taxa.

    Decoupling of plastid and endomembrane homeoviscous response to low temperature and darkness in Phaeodactylum tricornutum · 2025 · DOI

  • However, challenges such as high ash and nitrogen content remain to be addressed.

    Microalgae-Based Wastewater Treatment and Biomass Valorization: Insights, Challenges, and Opportunities from 15 Years of Research · 2025 · DOI

  • Further research into cyanobacterial metabolites could facilitate the development of sustainable and innovative biomedical and biotechnological solutions.

    Phycocompounds from Cyanobacteria: Exploring Synergistic Effects with Conventional Anticancer and Antimicrobial Properties · 2025 · DOI

  • This study offers to investigate the antimicrobial properties of exopolysaccharide-enriched extracts obtained from five microalgae species scarcely studied in this context.

    Antimicrobial properties of selected microalgae exopolysaccharide-enriched extracts: influence of antimicrobial assays and targeted microorganisms · 2025 · DOI

  • Future research should focus on optimizing cultivation efficiencies, advancing protein extraction techniques, and expanding the applications of aquatic biomass in various food products.

    Utilization of Microalgae and Duckweed as Sustainable Protein Sources for Food and Feed: Nutritional Potential and Functional Applications · 2025 · DOI

  • Future research should focus on optimizing microalgae-based co-cultures for food applications, addressing safety concerns, and further investigating their integration into functional foods and cellular agriculture products.

    Marine Microalgae–Microorganism Co-Cultures: An Insight into Nannochloropsis sp. Use and Biotechnological Applications · 2025 · DOI

  • Although microalgae have stood out as alternative sources of proteins and bioactive peptides, some species such as Nannochloropsis gaditana remain unexplored.

    Microalga Nannochloropsis gaditana as a Sustainable Source of Bioactive Peptides: A Proteomic and In Silico Approach · 2025 · DOI

  • Despite the potential of algae strains to accumulate high concentrations of PUFAs, including essential fatty acids (EFAs), many aspects of PUFA production by microalgae remain unexplored and their current production outputs are frequently suboptimal.

    Marine microalgae Schizochytrium demonstrates strong production of essential fatty acids in various cultivation conditions, advancing dietary self-sufficiency · 2024 · DOI

  • However, it remains unknown whether a unified signal transduction mechanism exists under different stresses.

    Reactive oxygen species derived from NADPH oxidase as signaling molecules regulate fatty acids and astaxanthin accumulation in Chromochloris zofingiensis · 2024 · DOI

  • Despite its potential, few studies have focused on Euglena’s cold adaptation mechanisms.

    Enhanced cold tolerance mechanisms in Euglena gracilis: comparative analysis of pre-adaptation and direct low-temperature exposure · 2024 · DOI

  • However, the effects of microalgae application more especially live microalgae on GHG emissions are understudied.

    Microalgae-based biofertilizer improves fruit yield and controls greenhouse gas emissions in a hawthorn orchard · 2024 · DOI

  • Despite their importance, the evolutionary origins and ancestral function of septins remain unclear.

    The evolutionary origins and ancestral features of septins · 2024 · DOI

  • This study provides the most extensive oxylipin characterization of these microalgae species to date, offering insights into alternative extraction methods and opening new avenues for further investigation of the significance of oxylipins in microalgae.

    Microalgae as a New Source of Oxylipins: A Comprehensive LC-MS-Based Analysis Using Conventional and Green Extraction Methods · 2024 · DOI

  • However, limited data exist on the oxylipin profile, its characterization, and the potential impact of the extraction process on these metabolites in microalgae.

    Microalgae as a New Source of Oxylipins: A Comprehensive LC-MS-Based Analysis Using Conventional and Green Extraction Methods · 2024 · DOI

  • Despite its well-documented health benefits, future research is needed to optimize production/cultivation methods, improve its bioavailability, and validate its efficacy (dose-effect relationship) and safety through clinical trials and large-scale human trials.

    Chemical Composition, Bioactivities, and Applications of Spirulina (Limnospira platensis) in Food, Feed, and Medicine · 2024 · DOI

  • Results reveal a wide variety of volatiles in commercial spirulina products, with numerous newly discovered compounds, prompting further research on sensory quality and production methods.

    Volatile Profiling of Spirulina Food Supplements · 2024 · DOI

Most-cited papers in Algal biology and biofuel production

Most recent work

Find a gap in your own Algal biology and biofuel production sub-topic

This page shows what the Algal biology and biofuel production literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Energy

Renewable energy and sustainable power systems
451 open questions
Electrocatalysts for Energy Conversion
267 open questions
Advanced Photocatalysis Techniques
196 open questions
Global Energy Security and Policy
131 open questions
Photovoltaic System Optimization Techniques
119 open questions
Hybrid Renewable Energy Systems
110 open questions
CO2 Reduction Techniques and Catalysts
102 open questions
Energy, Environment, and Transportation Policies
99 open questions
82 open questions have been extracted from the limitations and future-work passages of 437 Algal biology and biofuel production papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.