Seaweed Acid Extraction：Combined Physical-Biological Method

● The extracts retain not only alginate oligosaccharides but also a range of natural bioactive components from seaweed, including mannitol, betaine, phenolic compounds, and plant growth regulators.

● The biological method for preparing alginate oligosaccharides operates under mild conditions, maximizing the preservation of seaweed's natural active ingredients. The resulting oligosaccharides exhibit uniform molecular weight, with 75% of the polymers controlled within the optimal degree of polymerization range of 2-8.

● Alginate oligosaccharides obtained through this biological process demonstrate multiple biological activities, including growth promotion and stress resistance enhancement in plants.