Biological functions of plant polysaccharides and its application in aquaculture
With the gradual expansion of aquaculture industry in China,the frequent occurrence of diseases in aquatic animal aquaculture and the pollution of aquatic water are becoming more and more serious.The long-term use of antibiotics and traditional vaccines in aquaculture has caused water pollution,drug-resistant strains,antibiotic residues,and other problems,which restricts the healthy development of aquaculture industry.Plant polysaccharides play an important role in replacing antibiotics.Plant polysaccharides exist in the leaves,flowers,roots,stems,and fruits of plants.They are macromolecular polymers that connect various monosaccharides by glycosidic bonds.Plant polysaccharides have the advantages of safety,high efficiency,low residue and no drug resistance.Plant polysaccharides have many biological functions,such as regulating immunity,anti-oxidation,lowering blood sugar,anti-tumor,and improving intestinal health.The application of plant polysaccharides in animal production can improve body health,enhance immunity and antioxidant capacity,and improve production performance.Therefore,this paper mainly reviewed the physicochemical properties,biological functions of plant polysaccharides and their application in aquaculture,so as to provide a reference for their further promotion and application in aquaculture.
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