Red Seaweed-Derived Phycobiliproteins: Marine Bioactive Colorants with Functional Health Properties

Area of Science:

• Food science and technology
• Natural product chemistry
• Marine biotechnology

Background:

• Consumer demand for natural food colorants is rising, driving interest in alternatives to synthetic dyes.
• Red algal phycobiliproteins (PBPs) are water-soluble pigments with potential health benefits, offering vivid colors.
• Variability in algal sources and cultivation impacts PBP yield and quality, posing standardization challenges.

Purpose of the Study:

• To review red algal phycobiliproteins (PBPs), including their sources, extraction, properties, and applications.
• To explore the biological functions and regulatory aspects of PBPs.
• To identify future research and commercialization directions for red algal PBPs.

Main Methods:

• Literature review of red algal phycobiliproteins (PBPs).
• Comparison of PBP types, sources, and extraction methods.
• Inclusion of cyanobacterial PBP data where red algal data is limited.

Main Results:

• Red algal PBPs (phycoerythrin, phycocyanin, allophycocyanin) show potential for clean-label food applications but face stability limitations (heat, light, oxygen, pH).
• PBPs possess antioxidant, anti-inflammatory, anticancer, antibacterial, and metabolic health-promoting properties.
• Commercialization is hindered by challenges in raw material standardization, stability enhancement, process optimization, and regulatory harmonization.

Conclusions:

• Red algal PBPs are promising dual-function ingredients for the food industry.
• Further research and development are needed to overcome stability and standardization issues for successful commercialization.
• Clinical validation and regulatory harmonization are crucial for widespread adoption of PBPs in food products.