Recent advances in recovering bioactive compounds from macroalgae and microalgae using subcritical water extraction: Prospective compounds and biological activities

What if the secret to next-generation health products was hiding in seaweed all along? Subcritical water extraction is turning algae into a goldmine of bioactive compounds.

Algae are more than just ocean greenery—they are chemical factories waiting to be tapped. This review highlights how subcritical water extraction, a green technique using hot, pressurized water, efficiently recovers bioactive compounds from both macroalgae and microalgae. The process preserves their antioxidant and antimicrobial activities, making them valuable for food and medicine.

The method is a sustainable alternative to harsh solvents. By fine-tuning temperature and pressure, researchers can selectively extract polyphenols and other valuable molecules. These compounds show promise in fighting oxidative stress and microbial threats, opening doors for functional foods and nutraceuticals.

Beyond extraction, the review discusses prospective compounds and their biological roles. It emphasizes the dual benefit: reducing agricultural waste while producing high-value ingredients. For scientists and curious minds alike, this is a glimpse into a cleaner, smarter future for bioactive discovery.

Key Points

• Subcritical water extraction recovers bioactives from algae
• Green method preserves antioxidant and antimicrobial activities
• Polyphenols show promise for functional foods