Food Ingredients and Nutraceuticals from Microalgae: Main Product Classes and Biotechnological Production

Area of Science:

• Biotechnology
• Food Science
• Sustainable Resources

Background:

• Microalgal products, including biomass, pigments, and oils, are gaining traction as food, feed, and nutraceuticals.
• These products are rich in proteins, oils, and antioxidants, offering nutritional benefits and natural colorants.
• Marine microalgae provide vegetarian sources of essential omega-3 fatty acids like EPA and DHA.

Purpose of the Study:

• To provide a concise overview of microalgae cultivation requirements and options.
• To identify key challenges and opportunities in the industrial production of microalgal products.
• To explore pathways for improving the economic viability of microalgal-based industries.

Main Methods:

• Summarized light and nutrient requirements for microalgae cultivation.
• Reviewed different microalgae cultivation systems and growth conditions.
• Analyzed economic factors including cultivation, harvesting, dewatering, and quality assurance.

Main Results:

• Microalgal products encompass diverse forms like pastes, powders, and oils, serving various applications.
• Key challenges to industrialization include high costs in cultivation, harvesting, and toxin analysis.
• Profitability is currently focused on high-value ingredients, with potential for low-value products like fishmeal replacement.

Conclusions:

• Economic production of microalgal products requires significant improvements in capital and operational costs.
• Addressing cost barriers is crucial for expanding the market to include lower-value applications.
• Sustainable microalgal cultivation and processing advancements are vital for future food and feed security.