Composition, Structural Features, And Multifunctional Properties Of Extracellular Polysaccharides From The Non-Toxic Green Alga Parachlorella Sp.

The study investigates the extracellular polysaccharides (bxEPS) from the green alga Parachlorella sp. BX1.5, focusing on their composition, structural features, and multifunctional properties. The bxEPS, identified as an acidic rhamnan, demonstrated high stability and various bioactivities, including antioxidant, anti-hypertensive, and anti-gray hair effects. Notably, a 0.2% bxEPS solution promoted hair growth in mice, suggesting its potential as a functional ingredient in health foods and pharmaceuticals. The study confirms the non-mutagenicity and safety of BX1.5 cells through the Ames test and animal studies involving 10 rats, showing no adverse effects on body weight or organ health. The findings highlight the multifunctional properties of bxEPS and its promise as a sustainable biopolymer for microalgal biorefineries, with potential applications in cosmetics and other industries.